2012 YAMAHA YZ250F wheel alignment

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Page 55 of 198

YAMAHA YZ250F 2012  Owners Manual 3-5
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good operating condition.
Be

Page 67 of 198

YAMAHA YZ250F 2012  Owners Manual 3-17
CHASSIS
CHECKING THE SPROCKET
1. Inspect:
• Sprocket teeth "a"
Excessive wear→Replace.
Replace the drive sprocket, rear 
wheel sprocket and drive chain as a 
set.
CHECKING THE DRIVE CHAIN
1.

Page 123 of 198

YAMAHA YZ250F 2012  Owners Manual 4-49
KICK SHAFT AND SHIFT SHAFT
INSTALLING THE STOPPER 
LEVER
1. Install:
• Torsion spring "1"
• Stopper lever "2"
• Bolt (stopper lever) "3" 
Align the stopper lever roller with the 
slot on se