Yamaha YZ450FA 2011 Owner's Service Manual page 179

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HANDLING NOTE
Support the machine securely so there is no
danger of it falling over.
REMOVING THE DRIVE SPROCKET
1. Remove:
• Nut (drive sprocket) "1"
• Lock washer "2"
• Straighten the lock washer tab.
• Loosen the nut while applying the rear brake.
2. Remove:
• Drive sprocket "1"
• Drive chain "2"
Remove the drive sprocket together with the
drive chain.
REMOVING THE ENGINE
1. Remove:
• Pivot shaft "1"
If the pivot shaft is pulled all the way out, the
swingarm will come loose. If possible, insert a
shaft of similar diameter into the other side of
the swingarm to support it.
ENGINE REMOVAL
2. Remove:
• Engine "1"
From right side.
• Make sure that the couplers, hoses and ca-
bles are disconnected.
• Turn the engine 90° to the right as shown, and
then, while lifting the crankcase in the direc-
tion of the arrow shown, remove the engine
from the right side of the vehicle.
INSTALLING THE ENGINE
1. Install:
• Engine "1"
Install the engine from right side.
• Pivot shaft "2"
Pivot shaft:
85 Nm (8.5 m•kg, 61 ft•lb)
• Engine mounting bolt (lower) "3"
Engine mounting bolt (lower):
53Nm (5.3 m•kg, 38 ft•lb)
• Lower engine bracket "4"
• Bolt (lower engine bracket) "5"
Bolt (lower engine bracket):
34 Nm (3.4 m•kg, 24 ft•lb)
• Patch "6"
• Engine mounting bolt (front) "7"
Engine mounting bolt (front):
53 Nm (5.3 m•kg, 38 ft•lb)
4-68

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