Yamaha WR250F 2003 [47/304] Maintenance specifications

SPEC

2 - 11

MAINTENANCE SPECIFICATIONS

NOTE:

- marked portion shall be checked for torque tightening after break-in or before each race.

Silencer M8 × 1.25 2 35 3.5 25

Silencer clamp M8 × 1.25 1 20 2.0 14

Crankcase M6 × 1.0 11 12 1.2 8.7

Crankcase bearing stopper M6 × 1.0 11 10 1.0 7.2

Crankcase bearing stopper (crankshaft) M6 × 1.0 4 10 1.0 7.2

Left crankcase cover M6 × 1.0 8 10 1.0 7.2

Right crankcase cover M6 × 1.0 8 10 1.0 7.2

Clutch cover M6 × 1.0 7 10 1.0 7.2

Crankcase oil drain bolt M10 × 1.25 1 20 2.0 14

Drive chain sprocket cover M6 × 1.0 2 8 0.8 5.8

Kick shaft ratchet wheel guide M6 × 1.0 2 12 1.2 8.7

Kickstarter crank M8 × 1.25 1 33 3.3 24

Primary drive gear M18 × 1.0 1 75 7.5 54

Clutch spring M6 × 1.0 5 8 0.8 5.8

Clutch boss M16 × 1.0 1 60 6.0 43

Push lever shaft M6 × 1.0 1 10 1.0 7.2

Drive sprocket M18 × 1.0 1 75 7.5 54

Drive axle oil seal stopper M6 × 1.0 2 10 1.0 7.2

Segment M8 × 1.25 1 30 3.0 22

Shift guide M6 × 1.0 2 10 1.0 7.2

Stopper lever M6 × 1.0 1 10 1.0 7.2

Shift pedal M6 × 1.0 1 12 1.2 8.7

Part to be tightened Thread size Q’ty

Tightening torque

Nm m·kg ft·lb