2003 Bombardier Rally 200 Service Manual, Page 63Get this manual
Section 03 ENGINE Subsection 02 (TROUBLESHOOTING)
CYLINDER AND HEAD
SYMPTOM CONDITION TestInspection UNUSUAL ENGINE NOISE ANDOR VIBRATION IN IDLE SPEEDNORMAL USE1Check oil pressure regulator valve (spring) functionaValve fixed due contamination andor spring damaged (valve remains open)Clean andor replace spring andor mechanismbFaulty chain tensionerReplace spring andor mechanism
SYMPTOM CONDITION TestInspection
UNUSUAL ENGINE NOISE ANDOR VIBRATION WHILE OPERATINGNORMAL USE1Check items of UNUSUAL ENGINE NOISE ANDOR VIBRATION IN IDLE SPEED2Check noise coming from cylinder head areaaCheck valve timingReadjust valve timing andor replace failure part(s)bChain guide worn outReplace chain guidecStretched chain andor worn out sprocketReplace chain and sprocket at the same timedSprocket screw got looseRetighten screw with recommended torqueeRocker arm(s) is (are) worn out (valve adjustment)Readjust valve clearance andor replace rocker arm(s)fThrust washer(s) on rocker arm shaft is(are) missingFit thrust washer(s) (refer to CYLINDER AND HEAD)