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Sherco · Two-stroke single, premix, chain drive

SE 50

Library entry covers 2009-2025

39 factory 50 guideline

Published source

Sherco 50 SE-SM owner's manual (multilingual), English periodic maintenance table printed p.90 (PDF p.91)

Factory source. Covers Sherco 50 SE-SM owner's manual (file named 2021; no model year seen in the manual); other years not compared.

89 items for a 2009 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: Two-stroke
Engine lubrication: Two-stroke premix (oil in fuel)
Oil filtration: None (no filter)
Valve gear: None (two-stroke porting)
Ignition: Electronic (CDI / transistor / ECU)
Charging: Alternator / stator with rectifier
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Single carburetor
Cooling: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Separate gearbox oil
Clutch control: Hand lever, cable
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

2009 Sherco SE 50

On the road: every 200 km

1 item

Check two-stroke oil tank / carry premix oil

Pre-ride / on the road

Guideline

Running a two-stroke out of oil seizes it. Injection bikes: check the tank. Premix: carry oil and a measure.

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 300 km

1 item

Chain tension and lubrication (check)

Final drive

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 300 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 500 km

1 item

Mixing oil level (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 500 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 1,000 km

2 items

Spark plug (clean)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): P at the break-in service; the 1st-period cell reads clean every 1,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Brake pad wear (check)

Brakes

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 1,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 1,600 km or 6 months

1 item

Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 2,000 km

1 item

Coolant level (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 2,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 3,000 km or 12 months

1 item

Replace spark plugs (two-stroke)

Engine

Guideline

Every 3,000 km

1 item

Spark plug (replace)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): the 1st-period cell reads replace every 3,000 km; S marks also at 12,000, 24,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 4,000 km

19 items

Braking system (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Cooling system (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Exhaust and muffler (clean)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): P every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Final drive (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
General degreasing

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km; advisable after each off-road use. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
General motorcycle operation (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Idle speed (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): R at the break-in service, then C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Lights operation (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Nuts and bolts (tighten)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): T at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Turn signals and headlight operation (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Air filter (clean)

Fuel and air

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service, then P every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Exhaust port (decarbonize)

Fuel and air

Factory

Factory: Periodic maintenance table (English section, printed p.90): C-P every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Clutch (adjust)

Primary and gearbox

Factory

Factory: Periodic maintenance table (English section, printed p.90): R at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Clutch (check)

Primary and gearbox

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Transmission cables and controls (check)

Primary and gearbox

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Steering bearings and free play (check)

Front end

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Spoke tension (check)

Wheels and tires

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at the break-in service and every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Wheel bearings (check)

Wheels and tires

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Wheel truing (check)

Wheels and tires

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 4,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 5,000 km or 12 months

10 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean fuel tap filter / sediment bowl

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 5,000 km or 2 years

1 item

Decarbonize exhaust ports, pipes and baffles

Engine

Guideline

Two-strokes coke up the exhaust port and muffler baffles; power falls off gradually.

Every 6,500 km or 12 months

2 items

Inspect, clean and gap spark plugs

Engine

Guideline
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Guideline

Every 8,000 km

6 items

Mixing oil filter (clean)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): P every 8,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Mixing oil lines (check)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at 4,000, 12,000, 20,000, 28,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Carburetor (clean)

Fuel and air

Factory

Factory: Periodic maintenance table (English section, printed p.90): P every 8,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Fuel lines (check)

Fuel and air

Factory

Factory: Periodic maintenance table (English section, printed p.90): C at 4,000, 12,000, 20,000, 28,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Transmission oil (replace)

Primary and gearbox

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at the break-in service and every 8,000 km; C at the 4,000 km steps between. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Rear shock absorber (check)

Rear suspension and frame

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every 8,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 9,500 km or 12 months

8 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.
Clean carburetor float bowl(s), check float level and jets

Fuel and air

Guideline

Ethanol fuel varnishes old carbs quickly in storage.
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 12,000 km

4 items

Final drive (replace)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at 12,000, 24,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Air filter (replace)

Fuel and air

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at 12,000, 24,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Clutch (replace)

Primary and gearbox

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at 12,000, 24,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Fork oil and seals (replace)

Front end

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at 12,000, 24,000 and 36,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 16,000 km or 2 years

2 items

Compression test (or leak-down)

Engine

Guideline
Change gearbox oil

Primary and gearbox

Guideline

Every 19,500 km or 2 years

3 items

Replace air filter element

Fuel and air

Guideline
Clean and grease rear suspension linkage

Rear suspension and frame

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 20,000 km

1 item

Piston and piston rings (replace)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): S at 12,000 and 32,000 km; C at 4,000 and 20,000 km. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

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 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 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 1 month

1 item

Tire condition and pressure (check)

Wheels and tires

Factory

Factory: Periodic maintenance table (English section, printed p.90): C every month. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 12 months

1 item

Brake fluid (replace)

Brakes

Factory

Factory: Periodic maintenance table (English section, printed p.90): S every year. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.

Every 2 years

5 items

Coolant (replace)

Engine

Factory

Factory: Periodic maintenance table (English section, printed p.90): S every 2 years. Columns as printed: end of the 500 km break-in, then 1st to 9th periods at 4,000 km steps to 36,000 km. Key: C check (clean, adjust, lubricate, replace if necessary), S replace, P clean, R adjust, T tighten.
Replace coolant

Engine

Guideline
Inspect wiring, bullet connectors and ground points

Ignition and electrics

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.