Engine Idle Speed - Honda CRF250R Owner's Manual & Competition Handbook

250R_024-054.qxd 2008.07.17 15:40 ページ48

Engine Idle Speed

Refer to Safety Precautions on page 19.
The best way to assure proper carburetion is to
see your Honda dealer for regularly scheduled
servicing, including carburetor adjustment.
Remember, idle speed adjustment is not a
"cure-all" for other problems in your engine's
fuel-delivery system. Adjusting the idle will not
compensate for a fault elsewhere.
The engine must be at normal operating
temperature for accurate idle speed adjustment.
48
Servicing Your Honda
Idle Speed Adjustment
1. If the engine is cold, start it and warm it up 3
minutes and then shut it off.
2. Connect a tachometer to the engine.
3. Shift into neutral and start the engine.
4. Keep the motorcycle in an upright position.
5. Adjust idle speed with the throttle stop screw
(1).
Idle speed:
1,700 ± 100 min -1 (rpm)
(1) throttle stop screw
(1)