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Yamaha · Overhead-cam four-stroke single, wet sump, gearbox shares engine oil, chain drive

WR 125

Library entry covers 2009-2017

47 factory 32 guideline

Published source

Yamaha WR125R Owner's Manual 22B-28199-E1 (English), periodic maintenance charts pp.6-2 to 6-6

Factory owner's handbook. Covers WR125R (2009-2016), EU owner's manual 22B-28199 (English edition E1).

79 items for a 2015 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, screw/locknut adjusters
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, cable
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2015 Yamaha WR 125

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

1 item

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

Final drive

Factory

Manual: Drive chain (check slack, alignment, condition; adjust and lubricate). Factory: Every 500 km (300 mi) and after washing or riding in the rain

Every 1,600 km or 6 months

1 item

Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 3,000 km or 12 months

2 items

Change engine oil

Engine

Factory

Manual: Engine oil (change). Factory: When the oil change indicator flashes: 2000 km (1200 mi) after the initial 1000 km (600 mi), then every 3000 km (1800 mi)
Engine oil (check oil level and vehicle for oil leakage)

Engine

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): every 3000 km (1800 mi) and at the annual check; change when the oil change indicator flashes, 2000 km (1200 mi) after the initial 1000 km (600 mi) and every 3000 km (1800 mi) thereafter. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)

Every 5,000 km or 12 months

5 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Inspect chain and sprockets for wear (measure stretch)

Final drive

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
Check brake pads and discs

Brakes

Guideline

Every 6,000 km or 12 months

18 items

Chassis fasteners (make sure that all nuts, bolts and screws are properly tightened)

Engine

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Cooling system (check coolant level and vehicle for coolant leakage)

Engine

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Lights, signals and switches (check operation, adjust headlight beam)

Engine

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Fuel injection (adjust engine idling speed)

Fuel and air

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Fuel line (check hoses for cracks or damage)

Fuel and air

Factory

Factory: From 6000 km; annual check
Check battery electrolyte, top up with distilled water

Ignition and electrics

Factory

Manual: Battery (check electrolyte level and specific gravity, breather hose routing). Factory: From 6000 km; annual check
Clutch lever pivot shaft (lubricate with lithium-soap-based grease)

Primary and gearbox

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Sidestand (check operation, lubricate). Factory: From 6000 km; annual check
Sidestand switch (check operation)

Rear suspension and frame

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Brake hoses (check for cracks or damage)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Brake lever pivot shaft (lubricate with silicone grease)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Brake pedal pivot shaft (lubricate with lithium-soap-based grease)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Front and rear brake switches (check operation)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Front brake (check operation, fluid level and vehicle for fluid leakage)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Rear brake (check operation, fluid level and vehicle for fluid leakage)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Tires (check tread depth and for damage, replace if necessary; check air pressure, correct if necessary)

Wheels and tires

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Lubricate control cables and lever pivots

Controls and cables

Factory

Manual: Moving parts and cables (lubricate). Factory: From 6000 km; annual check
Throttle grip housing and cable (check operation and free play, adjust, lubricate)

Controls and cables

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km and at the annual check. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)

Every 6,000 km

11 items

Check and adjust valve clearances

Engine

Factory

Manual: Valves (check valve clearance, adjust). Factory: From 6000 km; dealer item
Muffler and exhaust pipe (check the screw clamp(s) for looseness)

Engine

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 1000, 6000, 12000, 18000 and 24000 km. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Replace oil filter

Engine

Factory

Manual: Engine oil filter element (replace). Factory: Every column incl. 1000 km (600 mi) initial
Rear suspension relay arm and connecting arm pivoting points (check operation)

Ignition and electrics

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Factory

Manual: Clutch (check operation, adjust). Factory: Every column incl. 1000 km initial
Check steering head bearing adjustment

Front end

Factory

Manual: Steering bearings (check play and roughness). Factory: Every column incl. 1000 km initial
Front fork (check operation and for oil leakage)

Front end

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Inspect rear shocks for leaks and damping

Rear suspension and frame

Factory

Manual: Shock absorber assembly (check operation and for oil leakage). Factory: From 6000 km
Swingarm (check operation and for excessive play)

Rear suspension and frame

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 6000, 12000, 18000 and 24000 km. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Check spoke tension and wheel true

Wheels and tires

Factory

Manual: Wheels (check runout, spoke tightness and for damage). Factory: From 6000 km
Check wheel bearings for play

Wheels and tires

Factory

Manual: Wheel bearings (check). Factory: From 6000 km

Every 9,500 km or 12 months

4 items

Inspect coolant hoses and clamps

Engine

Guideline
Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check swingarm bushes for play

Rear suspension and frame

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

5 items

Inspect, clean and gap spark plugs

Engine

Factory

Manual: Spark plug (check condition, clean and regap). Factory: Marked at 6000 km and 18000 km
Replace spark plugs

Engine

Factory

Manual: Spark plug (replace). Factory: Marked at 12000 km and 24000 km
Clean / inspect air filter

Fuel and air

Factory

Manual: Air filter element (clean). Factory: Marked at 6000 km and 18000 km
Replace air filter element

Fuel and air

Factory

Manual: Air filter element (replace). Factory: Marked at 12000 km and 24000 km; more often in wet or dusty areas
Rear suspension relay arm and connecting arm pivoting points (lubricate with lithium-soap-based grease)

Ignition and electrics

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): at 12000 and 24000 km. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)

Every 16,000 km or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 19,500 km or 2 years

2 items

Synchronize throttle bodies

Fuel and air

Guideline
Clean and grease rear suspension linkage

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

2 items

Repack / replace steering head bearings

Front end

Factory

Manual: Steering bearings (lubricate with lithium-soap-based grease). Factory: Every 24000 km (14000 mi)
Grease swingarm pivot

Rear suspension and frame

Factory

Manual: Swingarm (lubricate with molybdenum disulfide grease). Factory: Every 24000 km (14000 mi); check every 6000 km

Every 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 32,000 km or 4 years

1 item

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 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 2 years

3 items

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

Factory

Manual: Brake fluid (change). Factory: Every two years (chart tip)

Every 3 years

1 item

Replace coolant

Engine

Factory

Manual: Cooling system (change). Factory: Every 3 years; check level every 6000 km and annually

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

Factory

Manual: Brake hoses (replace). Factory: Every 4 years; check every 6000 km and annually
Rebuild calipers and master cylinders (seals)

Brakes

Guideline

Every 6 years

2 items

Replace inner tubes and rim tape with tires

Wheels and tires

Guideline
Replace tires on age (regardless of tread)

Wheels and tires

Guideline

No interval set

5 items

Air filter element (replace more frequently in unusually wet or dusty areas)

Fuel and air

Factory

Factory: TIP p.6-6: The air filter needs more frequent service if you are riding in unusually wet or dusty areas. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Drive chain (check, adjust and lubricate after washing the motorcycle or riding in the rain)

Final drive

Factory

Factory: Periodic maintenance chart p.6-4, item 11: every 500 km (300 mi) and after washing the motorcycle or riding in the rain. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Brake fluid level (check regularly, correct if necessary)

Brakes

Factory

Factory: TIP p.6-6, hydraulic brake service: Regularly check and, if necessary, correct the brake fluid level. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Front brake pads (replace)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): whenever worn to the limit. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)
Rear brake pads (replace)

Brakes

Factory

Factory: Periodic maintenance charts pp.6-2 to 6-6 (columns 1000 km (600 mi), 6000 km (3500 mi), 12000 km (7000 mi), 18000 km (10500 mi), 24000 km (14000 mi), annual check; from 30000 km (17500 mi) repeat the intervals starting from 6000 km (3500 mi)): whenever worn to the limit. (Read from ManualsLib, Yamaha WR125R owner's manual pp.6-2 to 6-6.)

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.