2006-2021 Yamaha YZ250 / YZ250XMaintenance schedule

Motocross / cross-country - 250cc two-stroke

Scheduled against races ridden and approximate engine hours (2.5 h per race).

Verified

Every interval on this page was read directly from the OEM chart.

Intervals

After break-in
Every race (about 2.5 hours)
Every third race (about 7.5 hours)
Every fifth race (about 12.5 hours)
As required

Full schedule (65 items)

2006-2021 Yamaha YZ250 / YZ250X scheduled maintenance items and intervals
Item	Action	Interval
Air filter element Clean.	Clean	Every 2.5 hrs Also marked: After break-in
Brakes Adjust lever position and pedal position. Lubricate pivot points. Check brake disk surface. Check fluid level and for leakage. Tighten brake disk bolts, caliper bolts, master cylinder bolts and union bolts.	Lubricate, Adjust	Every 2.5 hrs Also marked: After break-in
Carburetor Check carburetor settings and for obstructions.	Inspect	Every 2.5 hrs Also marked: After break-in
Carburetor Adjust and clean.	Clean, Adjust	Every 2.5 hrs Also marked: After break-in
Chassis fasteners Check all chassis fitting and fasteners. Correct or tighten if necessary.	Adjust	Every 2.5 hrs Also marked: After break-in
Clutch Check clutch housing, friction plates, clutch plates and clutch springs for wear or damage. Adjust.	Adjust	Every 2.5 hrs Also marked: After break-in
Cooling system Check coolant level and for leakage.	Inspect	Every 2.5 hrs Also marked: After break-in
Cooling system Check hoses for cracks or damage.	Inspect	Every 2.5 hrs
Cylinder Check cylinder for score marks or wear. Clean.	Clean	Every 2.5 hrs Also marked: After break-in
Cylinder head Check cylinder head for carbon deposits. Clean.	Clean	Every 2.5 hrs Also marked: After break-in
Cylinder head Check cylinder head gasket for damage. Tighten cylinder head nuts if necessary.	Inspect	Every 2.5 hrs Also marked: After break-in
Drive chain Check chain slack, alignment and condition. Adjust and thoroughly lubricate chain with Yamaha chain and cable lube or equivalent.	Lubricate, Adjust	Every 2.5 hrs Also marked: After break-in
Exhaust system Check exhaust pipe and muffler for carbon deposits.	Inspect	Every 2.5 hrs Also marked: After break-in
Frame Clean and check for damage.	Clean	Every 2.5 hrs Also marked: After break-in
Front fork Check operation and for oil leakage. Adjust if necessary. Clean dust seal and lubricate with lithium-soap-based grease.	Clean, Lubricate, Adjust	Every 2.5 hrs Also marked: After break-in
Moving parts and cables Lubricate.	Lubricate	Every 2.5 hrs Also marked: After break-in
Piston Check piston for carbon deposits and cracks or damage. Clean.	Clean	Every 2.5 hrs Also marked: After break-in
Piston pin and small end bearing Check piston pin and small end bearing for damage.	Inspect	Every 2.5 hrs
Piston rings Check piston ring end gap and rings for damage.	Inspect	Every 2.5 hrs Also marked: After break-in
Rear suspension Check operation and tighten if necessary.	Adjust	Every 2.5 hrs Also marked: After break-in
Rear suspension Lubricate with molybdenum disulfide grease.	Lubricate	Every 2.5 hrs Also marked: After break-in
Shock absorber assembly Check operation and adjust. Tighten if necessary.	Adjust	Every 2.5 hrs Also marked: After break-in
Spark plug Check condition. Clean and regap.	Clean	Every 2.5 hrs Also marked: After break-in
Steering head Check operation, free play, and tighten if necessary.	Adjust	Every 2.5 hrs Also marked: After break-in
Swingarm pivot bearings Check bearing assemblies for looseness. Lubricate with molybdenum disulfide grease.	Lubricate	Every 2.5 hrs Also marked: After break-in
Throttle grip Check operation. Check throttle grip free play, and adjust if necessary. Lubricate cable and grip housing.	Lubricate, Adjust	Every 2.5 hrs Also marked: After break-in
Tires and wheels Check tire air pressure, wheel runout, spokes for looseness, and tires for wear.	Inspect	Every 2.5 hrs Also marked: After break-in
Tires and wheels Tighten sprocket bolts if necessary.	Inspect	Every 2.5 hrs Also marked: After break-in
YPVS Check YPVS for carbon deposits and cracks or damage.	Inspect	Every 2.5 hrs Also marked: After break-in
YPVS Clean.	Clean	Every 2.5 hrs Also marked: After break-in
Fuel line Clean and check for leakage.	Clean	Every 7.5 hrs Also marked: After break-in
Piston rings Replace.	Replace	Every 7.5 hrs Also marked: As required
Shock absorber assembly Lubricate with lithium-soap-based grease.	Lubricate	Every 7.5 hrs
Tires and wheels Check wheel bearings for looseness.	Inspect	Every 7.5 hrs
Tires and wheels Lubricate wheel bearings with lithium-soap-based grease.	Lubricate	Every 7.5 hrs
Crankshaft Check crankshaft for carbon deposits and damage.	Inspect	Every 12.5 hrs Also marked: As required
Crankshaft Clean.	Clean	Every 12.5 hrs Also marked: As required
Exhaust system Clean.	Clean	Every 12.5 hrs
Front fork Replace fork oil.	Replace	Every 12.5 hrs Also marked: After break-in
Piston Replace.	Replace	Every 12.5 hrs Also marked: As required
Rotor nut (flywheel magneto) Tighten.	Inspect	Every 12.5 hrs Also marked: After break-in
Steering head Clean and lubricate with lithiumsoap-based grease.	Clean, Lubricate	Every 12.5 hrs
Transmission Change the transmission oil.	Replace	Every 12.5 hrs Also marked: After break-in
Air filter element Replace.	Replace	One time Also marked: As required
Brakes Replace brake pads.	Replace	One time Also marked: As required
Brakes Replace brake fluid.	Replace	One time Also marked: As required
Clutch Replace.	Replace	One time Also marked: As required
Cooling system Check radiator cap spring operation.	Inspect	One time Also marked: As required
Cooling system Change coolant.	Replace	One time Also marked: As required
Cylinder Replace.	Replace	One time Also marked: As required
Cylinder head Replace cylinder head gasket.	Replace	One time Also marked: As required
Drive chain Replace.	Replace	One time Also marked: As required
Drive chain roller and support guide Check for wear or damage. Replace if necessary.	Replace	One time Also marked: As required
Front fork Replace oil seals.	Replace	One time Also marked: As required
Front fork Replace protector seal.	Replace	One time Also marked: As required
Kickstarter system Check idle gear for damage. Replace if necessary.	Replace	One time Also marked: As required
Piston pin and small end bearing Replace.	Replace	One time Also marked: As required
Shift forks, guide bars, shift cam Check all parts for wear and damage. Replace if necessary.	Replace	One time Also marked: As required
Shock absorber assembly Lubricate with lithium-soap-based grease.	Lubricate	One time Also marked: As required
Sidestand (YZ250X) Lubricate with lithium-soap-based grease.	Lubricate	One time Also marked: As required
Spark plug Replace.	Replace	One time Also marked: As required
Steering head Replace bearings.	Replace	One time Also marked: As required
Tires and wheels Replace wheel bearings.	Replace	One time Also marked: As required
Transmission Check transmission for damage.	Inspect	One time Also marked: As required
Transmission Replace bearings.	Replace	One time Also marked: As required

Every row above is factory schedule, straight from the chart. Intervals are shown in hrs.

Specs

From the 2021 manual's technical data section. Check yours before buying — these change between model years.

Displacement: 250 cm³
Spark plug: NGK/BR8EG
Plug gap: 0.5–0.6 mm (0.020–0.024 in)
Engine oil: disassembled: 0.80 L (0.85 US qt, 0.70 Imp.qt)
Coolant: capacity: 1.20 L (1.27 US qt, 1.06 Imp.qt)
Fuel: tank: 8.0 L (2.1 US gal, 1.8 Imp.gal)
Tire pressure (cold): front: 100 kPa (1.00 kgf/cm², 15 psi)
rear: 100 kPa (1.00 kgf/cm², 15 psi)
Secondary reduction: 3.571 (50/14)

Legend

Y — Service this item at this interval (marked in the OEM chart)

Chart notes

1. Items marked with an asterisk in the manual should be performed by a Yamaha dealer - they need special tools, data and technical skills.
2. Calendar items (coolant every two years, brake fluid every year, fuel hose every four years) sit in the Remarks column, not in the race columns.

From the manual

Service life of parts varies significantly with the environment the machine runs in (rain, dirt); inspect earlier if conditions are harsh.
Periodic inspection is essential to make full use of machine performance.

Source: 2021 Yamaha YZ250/YZ250X Owner's Manual (BF1-28199-10) · Chart read from the 2021 manual. Intervals change between model years — confirm against yours.

Always confirm intervals, torque specs and part numbers against your own service manual. This site is a shopping aid, not a repair manual.

Open the hour meter tool