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

FS 450

Library entry covers 2016-2024

49 factory 50 guideline

Published source

Husqvarna FS 450 owner's manual, 2018 (art. no. 3402178en, 06/2017), service schedule printed p.30-31 (Manualsnet, viewer pages 32-33)

Factory owner's handbook. Covers Husqvarna FS 450 owner's manual, 2018 model.

99 items for a 2020 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

2020 Husqvarna FS 450

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 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 10 h

37 items

All hoses and sleeves for cracking, leaks and routing (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Antifreeze and coolant level (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Engine oil and oil filter (change) and oil screens (clean)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Final check and test ride

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Heim joint play (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Idle (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Read out the fault memory with the diagnostics tool

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Rim run-out (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Screws and nuts for tightness (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Air filter and air filter box (clean)

Fuel and air

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Fuel pressure (check)

Fuel and air

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Fuel screen (change)

Fuel and air

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Battery (check and charge)

Ignition and electrics

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Clutch (check)

Primary and gearbox

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Hydraulic clutch fluid level (check/correct)

Primary and gearbox

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Chain tension (check)

Final drive

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Chain, rear sprocket, engine sprocket and chain guide (check)

Final drive

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Grease all moving parts (hand lever, chain and others) and check for smooth operation

Final drive

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Steering head bearing play (check)

Front end

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Frame (check)

Rear suspension and frame

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Shock absorber linkage (check)

Rear suspension and frame

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Swingarm (check)

Rear suspension and frame

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Brake discs (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Brake lines for damage and leakage (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Foot brake lever free travel (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Front brake fluid level (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Front brake linings (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Hand brake lever free travel (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Rear brake fluid level (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Rear brake linings (check)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Spoke tension (check)

Wheels and tires

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Tire air pressure (check)

Wheels and tires

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Tire condition (check)

Wheels and tires

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).
Wheel bearing play (check)

Wheels and tires

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Wheel hubs (check)

Wheels and tires

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Cables for damage and routing (check)

Controls and cables

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 10 operating hours (after every race).
Throttle cables (check routing and setting)

Controls and cables

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 10 operating hours (after every race).

Every 20 h

2 items

Main muffler glass fiber yarn filling (change)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 20 operating hours.
Swingarm bearing play (check)

Rear suspension and frame

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 20 operating hours.

Every 30 h

1 item

Valve clearance (check)

Engine

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Once after 1 operating hour, then every 30 operating hours.

Every 40 h

2 items

Fork (service)

Front end

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 40 operating hours (required work); recommended once after 10 operating hours.
Shock absorber (service)

Rear suspension and frame

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Every 40 operating hours (required work); recommended once after 20 operating hours.

Every 50 h

1 item

Minor engine service, recommended (change spark plug and connector, change piston, check and measure cylinder, check cylinder head, camshaft, rocker arms and shafts, timing assembly)

Ignition and electrics

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: every 50 operating hours.

Every 100 h

2 items

Fuel filter (change, recommended)

Fuel and air

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: every 100 operating hours.
Major engine service, recommended (valves, valve springs, seats and retainers, connecting rod, conrod bearing, crank pin, timing chain, all engine bearings, shaft seals and more)

Final drive

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: every 100 operating hours.

Every 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 12 months

4 items

Hydraulic clutch fluid (change, recommended)

Primary and gearbox

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: annually.
Steering head bearing (lubricate, recommended)

Front end

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: annually.
Front brake fluid (change, recommended)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: annually.
Rear brake fluid (change, recommended)

Brakes

Factory

Factory: Service schedule (Husqvarna FS 450 owner's manual, 2018 model, art. no. 3402178en, printed p.30-31). Required work columns: once after 1 operating hour (one-time), every 10 operating hours/after every race, every 20, 30 and 40 operating hours. Recommended work columns: once after 10 hours, once after 20 hours, every 50 hours, every 100 hours, annually. Work is done by an authorized Husqvarna Motorcycles workshop. Recommended work: annually.

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.