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Husqvarna · Shim-adjusted overhead-cam four-stroke, wet sump, gearbox shares engine oil, chain drive

SMR 630

Library entry covers 2004-2013

75 factory 50 guideline

Published source

Husqvarna SMR 630 owner's manual, ManualsLib

Factory owner's handbook. Covers edition year not shown.

125 items for a 2006 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)

Engine cycle: Four-stroke
Engine lubrication: Wet sump (oil in crankcase)
Oil filtration: Replaceable cartridge or spin-on filter
Valve gear: Overhead cam, shim adjusted (incl. desmo)
Ignition: Electronic (CDI / transistor / ECU)
Charging: Alternator / stator with rectifier
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Fuel injection
Cooling: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Hand lever, hydraulic
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2006 Husqvarna SMR 630

On the road: every 300 km

1 item

Check engine oil level

Pre-ride / on the road

Guideline

Each fuel stop on old machines. Dry sump: check the tank hot, engine idling or just stopped, per your manual.

On the road: every 500 km

3 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Guideline

Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 800 km

1 item

Check coolant level

Pre-ride / on the road

Guideline

On the road: every 1,000 km

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

Every 500 km

2 items

Engine oil and oil filter cartridge (replace oil, clean filter)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Engine oil replacement and filter cleaning every 500 km or 2 races (marked * after the first 3 hours).
Rear transmission chain (tension check, lubricate every 500 km)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours: tension check and lubricate every 500 km (T, L5); replace every 15 hours.

Every 1,600 km or 6 months

1 item

Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 5,000 km or 12 months

9 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean drive chain thoroughly (remove and soak, re-lube)

Final drive

Guideline

Non O-ring chains on old machines: remove, clean, soak in hot chain grease or lube, refit with the master link clip closed end leading.
Inspect chain and sprockets for wear (measure stretch)

Final drive

Guideline
Check steering head bearing adjustment

Front end

Guideline
Inspect fork seals, stanchions and fork boots

Front end

Guideline
Check footrests, pegs, rear brake and gear lever pivots

Rear suspension and frame

Guideline
Grease and check center / side stand and springs

Rear suspension and frame

Guideline
Check brake pads and discs

Brakes

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 6,500 km or 12 months

1 item

Inspect, clean and gap spark plugs

Engine

Guideline

Every 8,000 km or 12 months

2 items

Change engine oil

Engine

Guideline

Pre-1970 machines: many owners run non-detergent or classic-spec oil with no filter, so short intervals matter. Dry sump: drain the tank and the crankcase/sump, flush the tank and clean the feed and return screens.
Replace oil filter

Engine

Guideline

Every 9,500 km or 12 months

7 items

Inspect coolant hoses and clamps

Engine

Guideline
Clean / inspect air filter

Fuel and air

Guideline

Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.
Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check swingarm bushes for play

Rear suspension and frame

Guideline
Inspect rear shocks for leaks and damping

Rear suspension and frame

Guideline
Lubricate control cables and lever pivots

Controls and cables

Guideline
Lubricate speedometer / tachometer cables, check drive

Controls and cables

Guideline

A dry speedo cable whips the needle and eventually kills the instrument.

Every 16,000 km or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 19,500 km or 2 years

4 items

Replace air filter element

Fuel and air

Guideline
Synchronize throttle bodies

Fuel and air

Guideline
Clean and grease rear suspension linkage

Rear suspension and frame

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 24,000 km or 3 years

1 item

Change fork oil

Front end

Guideline

Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 24,000 km or 4 years

1 item

Check valve clearances (shim adjusted)

Engine

Guideline

Every 25,500 km or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 32,000 km or 4 years

2 items

Repack / replace steering head bearings

Front end

Guideline

Many old machines use loose balls in cups and cones. Taper roller conversions are common.
Repack / replace wheel bearings

Wheels and tires

Guideline

Cup-and-cone and taper roller hubs need periodic repacking and adjustment.

Every 38,500 km or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

Every 40,000 km or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 48,500 km or 6 years

1 item

Rebuild forks: seals, bushes, springs

Front end

Guideline

Every 5 h

25 items

Bolts and nuts tightness, general check

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours.
Drive sprocket (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace every 15 hours; replace if necessary.
Exhaust pipe and muffler (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace if necessary.
Intake manifold (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours; replace every 15 hours; replace if necessary. (The Spanish page shows no 3-hour check.)
Radiator / water pump hose (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours.
Radiators (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace if necessary.
Rear driven sprocket screws (check tightness)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours (also in the 15-hour column).
Rear suspension link needle bearings (lubricate)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Grease every 5 hours.
Spark plug (clean)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Clean every 5 hours; replace every 15 hours.
Spark plug cap (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 and 15 hours; replace if necessary.
Valve clearance (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours; the valves row shows S (replacement, see workshop manual) in the every-15-hours column.
Air filter (clean and lubricate)

Fuel and air

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Clean and lubricate every 5 hours (also in the 15-hour column); replace if necessary.
Clutch control assembly (check and lubricate)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check and lubricate every 5 hours.
Clutch discs (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace if necessary.
Clutch hub (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace if necessary.
Throttle, clutch and decompressor cables (check and lubricate)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check and lubricate every 5 hours; lubricate every 15 hours; replace if necessary.
Chain guide roller, bearings (check)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace if necessary.
Rear chain guide / chain guard (check)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours; replace if necessary.
Steering head (check and lubricate)

Front end

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; grease every 15 hours.
Rear swing arm pivot needle bearings (lubricate)

Rear suspension and frame

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Grease every 5 hours (also in the 15-hour column).
Brake pads (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours (also in the 15-hour column); replace if necessary.
Front brake system fluid (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace every 15 hours.
Rear brake system fluid (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 5 hours; replace every 15 hours.
Wheel spoke tension (check)

Wheels and tires

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 5 hours (also in the 15-hour column).
Throttle control assembly (check and lubricate)

Controls and cables

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check and lubricate every 5 hours.

Every 15 h

48 items

Camshaft (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Connecting rod assembly (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Coolant hoses and clamps (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours.
Crankcase bearings (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Cylinder assembly (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Drive sprocket (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Exhaust muffler packing (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Footrests, footrest pins and springs (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Handlebar holders and fastening set (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours.
Intake and exhaust rocker arms (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Intake manifold (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Oil pump (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Oil pump / crankcase hose (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours.
Piston assembly (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary. (The Spanish page shows replacement every 15 hours.)
Rear driven sprocket (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Rear suspension link bushings (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Spark plug (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Starter decompressor system (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Starting gears (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Starting pedal (lubricate)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Grease every 15 hours.
Valve cups and half cones (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Valve springs (check)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Valves (replace)

Engine

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. S (#) in the every-15-hours column (see workshop manual).
Carburetor (clean)

Fuel and air

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Clean every 15 hours.
Carburetor throttle valve (check)

Fuel and air

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Fuel hoses (check)

Fuel and air

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours; replace if necessary.
Valve timing driven gear (check)

Ignition and electrics

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Valve timing driving gear (check)

Ignition and electrics

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Clutch discs housing (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Clutch discs pressure plate (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Clutch disengagement rod (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Clutch springs (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Primary drive gear set (check)

Primary and gearbox

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Rear chain slider (check)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Rear transmission chain (replace)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Valve timing chain (replace)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Valve timing chain slider (replace)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Valve timing chain tensioner (check)

Final drive

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Front fork (overhaul)

Front end

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Overhaul every 15 hours.
Rear shock absorber (check)

Rear suspension and frame

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Rear swing arm bushings (check)

Rear suspension and frame

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours.
Saddle frame and engine fastening bolts (check)

Rear suspension and frame

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours.
Brake pump-caliper hoses (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. After the first 3 hours, then every 15 hours; replace if necessary.
Front brake disc (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Front brake system fluid (replace)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Rear brake disc (check)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.
Rear brake system fluid (replace)

Brakes

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Replace every 15 hours.
Wheel hub bearings (check)

Wheels and tires

Factory

Factory: Periodic maintenance schedule for competition use (Husqvarna SMR 630 owner's manual, edition year not shown, printed p.238-244, English rows of the IT/EN/FR pages). Columns: after first 3 hours; every 5 hours; every 15 hours; replace if necessary; see page. Key: T tension check, L5 lubricate every 500 km, S replacement, C check, P cleaning, R overhaul, L greasing/lubrication, # see workshop manual. Notes: replace all gaskets at every removal; replace screws and nuts if worn; general check after racing use on muddy or sandy ground. Check every 15 hours; replace if necessary.

Every 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 2 years

5 items

Replace coolant

Engine

Guideline
Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Replace hydraulic clutch fluid

Primary and gearbox

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Replace brake fluid

Brakes

Guideline

Every 4 years

3 items

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.
Inspect brake hoses; replace old rubber

Brakes

Guideline
Rebuild calipers and master cylinders (seals)

Brakes

Guideline

Every 6 years

1 item

Replace tires on age (regardless of tread)

Wheels and tires

Guideline

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.