Carburetor Adjustment & Tuning Tips
(5)
(8)
0 – 0.1 in (0 – 3 mm)
(7)
(5) air vent hoses
(6) overfl ow hose
(7) fuel line
(8) fuel line clamps
140
Adjustments for Competition
17 CRF450X̲31MEY710.indb 140
17 CRF450X̲31MEY710.indb 140
Idle Speed Adjustment
1. If the engine is cold, start it and warm it up 3
minutes. Then shut it off.
2. Connect a tachometer to the engine.
3. Shift the transmission into neutral. Start the
(5)
engine.
4. Keep the motorcycle in an upright position.
5. Adjust idle speed with the throttle stop screw
(1).
Idle speed:
1,700 ± 100 rpm
(6)
(8)
(6)
(1) throttle stop screw
(5)
(1)
2016/06/08 11:46:25
2016/06/08 11:46:25