Yamaha YZ250 Owner's Service Manual page 340

ENGINE REMOVAL
EC4M3000
REMOVAL POINTS
EC4F3100
Drive sprocket
1. Remove:
9 Nut (drive sprocket) 1
9 Lock washer 2
NOTE:
9 Straighten the lock washer tab.
9 Loosen the nut while applying the rear brake.
2. Remove:
9 Drive sprocket 1
9 Drive chain 2
NOTE:
Remove the drive sprocket together with the
drive chain.
EC4M3340
Engine removal
NOTE:
Make sure that the couplers, hoses and cables
are disconnected.
1. Lift the engine 1 up to the point where the
engine's mounting front does not contact the
bracket on the frame.
2. Remove the engine 1 aslant and upward
while inclining it toward the kick crank side
so that the engine's mounting top does not
contact the bracket on the frame.
4-62
ENG