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Yamaha WR250F 2021 - Page 92

Yamaha WR250F 2021
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PERIODIC MAINTENANCE
3-4
11 * Cylinder
• Inspect score marks.
• Inspect wear.
• Replace.
12 *Clutch
• Inspect housing, friction plate,
clutch plate and spring.

• Replace.
13 * Transmission
• Inspect.
• Replace bearings.
14 *
Shift fork, shift cam,
guide bar
• Inspect wear.
15 * Generator rotor nut • Retighten. 
16 * Muffler
• Inspect and retighten. 
• Clean.
• Replace.
17 * Crank • Inspect and clean. 
18 * Throttle body • Inspect.
19 Spark plug
• Inspect and clean. 
• Replace.
20 Drive chain
• Lubricate, slack, alignment. 
• Replace.
21 * Cooling system
• Check coolant level and leakage. 
• Check radiator cap operation.
• Replace coolant. Every two years
• Inspect hoses.
22
Outside nuts and
bolts
• Retighten.

23 Air filter
• Clean and lubricate. 
• Replace
.
24 Oil filter • Replace. 
25 * Engine guard • Replace.
26 *Frame • Clean and inspect. 
27 * Fuel tank, fuel pump • Clean and inspect. 
28 * Fuel hose
• Inspect.
• Replace. Every four years
29 *Brake(s)
• Adjust lever position and pedal
position.

• Lubricate pivot point. 
• Check brake disc surface. 
• Check fluid level and leakage. 
• Retighten brake disc bolts, caliper
bolts, master cylinder bolts and
union bolts.

• Replace pads.
• Replace brake fluid. Every one year
No. Item Routine
After
break-in
Every
race
Every third
race
(or 500 km)
Every fifth
race
(or 1000 km)
As
required

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