2000 Yamaha Motorsports Big Bear 400 Owners Manual - Page 126
2000 Yamaha Motorsports Big Bear 400 Manual
Page 126 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. 2 1 a 1. Locknut a. 3 ~ 5 mm (0.12 in ~ 0.20 in) 8-18 2. Adjusting bolt
8-18
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
clearance must be adjusted regularly. This
adjustment however, should be left to a
professional Yamaha service technician.
EBU00307
Throttle lever adjustment
NOTE:
Adjust the engine idling speed before ad-
justing the throttle lever free play.
1.
Loosen the locknut.
2.
Turn the adjusting bolt until the throt-
tle lever free play is 3 ~ 5 mm (0.12 ~
0.20 in).
3.
Tighten the locknut.
1.
Locknut
2.
Adjusting bolt
a.
3 ~ 5 mm (0.12 in ~ 0.20 in)
1
2
a