Idle Speed Adjustment; Muffler Inspection; Silencer Fiber Replacement - Yamaha YZ250(N)/LC Owner's Service Manual

IDLE SPEED ADJUSTMENT/MUFFLER INSPECTION/

SILENCER FIBER REPLACEMENT

EC35M001

IDLE SPEED ADJUSTMENT

1. Start the engine and thoroughly warm it up.
2. Adjust:
Adjustment steps:
Turn the throttle stop screw 1 until the
engine runs at the lowest possible speed.
To increase idle speed
To decrease idle speed
EC35P010

MUFFLER INSPECTION

1. Inspect:
EC35R041
SILENCER FIBER REPLACEMENT
1. Remove:
3-15
9Idle speed
9O-ring 1
Damage Replace.
9Seat
9Side cover (right)
9Bolt (silencer) 1
9Silencer 2
9Bolt (fiber) 3
INSP
ADJ
Turn the throttle
stop screw 1 1 in.
Turn the throttle
stop screw 1 1
out.