2002 Yamaha Motorsports Big Bear 400 4x4 Owners Manual - Page 131
2002 Yamaha Motorsports Big Bear 400 4x4 Manual
Page 131 highlights
EBU00303 EBU00307 Valve clearance adjustment The correct valve clearance changes with use, resulting in improper fuel/air supply or engine noise. To prevent this, the valve clearance must be adjusted regularly. This adjustment however, should be left to a professional Yamaha service technician. Throttle lever adjustment NOTE: Adjust the engine idling speed before adjusting the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle lever free play is 3 ~ 5 mm (0.12 ~ 0.20 in). 3. Tighten the locknut. 1. Locknut 2. Adjusting bolt a. Free play: 3 ~ 5 mm (0.12 ~ 0.20 in) 8-20
8-20
EBU00303
Valve clearance adjustment
The correct valve clearance changes with
use, resulting in improper fuel/air supply or
engine noise. To prevent this, the valve clear-
ance must be adjusted regularly. This adjust-
ment however, should be left to a professional
Yamaha service technician.
EBU00307
Throttle lever adjustment
NOTE:
Adjust the engine idling speed before adjust-
ing the throttle lever free play.
1.
Loosen the locknut.
2.
Turn the adjusting bolt until the throttle le-
ver free play is 3 ~ 5 mm (0.12 ~ 0.20 in).
3.
Tighten the locknut.
1.
Locknut
2.
Adjusting bolt
a.
Free play: 3 ~ 5 mm (0.12 ~ 0.20 in)