Yamaha Motor YZ250 N/LC 2001 Manuel D'atelier Du Proprietaire page 302

KICK AXLE, SHIFT SHAFT AND PRIMARY DRIVE GEAR
EC4C5531
Primary drive gear
1. Install:
9Thrust plate 1
9Primary drive gear 2
9Governor drive gear 3
9Plain washer 4
9Bolt (primary drive gear) 5
NOTE:
9Install the plain washer with its chamfered side
a toward you.
9Temporarily tighten the bolt at this point.
2. Install:
9Primary driven gear
Refer to "CLUTCH AND PRIMARY DRI-
VEN GEAR" section.
3. Tighten:
9Bolt (primary drive gear) 1
NOTE:
Place an aluminum plate a between the teeth of
the primary drive gear 2 and driven gear 3.
4. Install:
9Dowel pin 1
9Gasket [crankcase cover (right)] 2
5. Install:
9Crankcase cover (right) 1
NOTE:
Mesh the governor gear 2 with the governor
drive gear 3 and the impeller shaft gear 4 with
the primary drive gear 5.
4-46
ENG
55 Nm (5.5 m•kg, 40 ft•lb)