2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 48Get this manual
MAINTENANCE Install new gasket onto the centrifugal filter coverInstall the centrifugal filter cover with the gasket,
aligning the bolt hose in the cover and gasketApply locking agent to the centrifugal filter cover bolt threadsInstall and tighten the three boltsInstall the front crankcase cover (page 9-18),
ENGINE IDLE SPEED
NOTE: Inspect and adjust idle speed after all other engine adjustments are within specificationsThe engine must be warm for accurate adjustmentTen minutes of stopand-go riding is sufficient
Warm up the engine, shih the transmission into neutralCheck the idle speed and adjust by turning the throttle stop screw as requiredIDLE SPEED1,400 :t 100 rpm