2002 Bombardier Quest 650XT Service Manual, Page 49Get this manual
Section 03 ENGINE Subsection 02 (TROUBLESHOOTING)
SYMPTOM CONDITION TestInspection THE ATV ACCELERATES SLOWLY, ESPECIALLY WHEN IT IS STOPPEDNORMAL USE1Check drive belt conditionaBelt is too narrow (drive belt engagement is higher in drive pulley)Replace belt if width is less than specified in DRIVE BELT2Check driven pulley sliding half playaJammed sliding halfReplace3Check spring tension of driven pulley sliding halfaSliding half rotation is accelerated when spring tension is too weakReplace4Check drive pulley spring tensionaSpring tension is too weakReplace spring (recommended Bombardier spring)5Check torque gear for wear (between driven pulley outer and inner half)aGear is worn andor damagedReplace torque gear6Check ramp for wear (located on inner half of driven pulley)aRamp worn outReplace rampSYMPTOM CONDITION TestInspection ENGINE MAXIMUM RPM IS TOO HIGH AND TOP SPEED IS NOT REACHEDNORMAL USE1Check items and of THE ATV ACCELERATES SLOWLY, ESPECIALLY WHEN IT IS STOPPED2Check driven pulley spring tensionaSpring tension is too stiffReplace spring (recommended Bombardier spring)3Check rollers in governor cupaRoller(s) is(are) worn outReplace governor cup4Check levers in drive pulley outer halfaLever(s) is(are) worn outReplace all levers together with screws