2002 Bombardier Quest 650XT Service Manual, Page 201Get this manual
Section 05 ELECTRICAL Subsection 04 (STARTING SYSTEM)
STARTING SYSTEM TROUBLESHOOTING
SYMPTOM Starter does not turnCAUSE Ignition switch is in the OFF positionBurnt fuseTransmission is not set on the Park or NeutralPoor contact of battery terminal(s) or ground cable connectionsWeak batteryPoor contact or open circuit of: startstop switch or start button and engine stop switch, ignition switch or starting solenoidNEUTRAL or PARK switches are defectiveEngine mechanical problem (ensure that other electric components are good)Starter turns; but does not crank the enginePoor contact of battery terminal(s)Poor battery ground cable connectionBurnt or poor contact of solenoid switch contact discPoor contact of brushBurnt commutatorWorn commutator segmentsShorted armatureWeak brush spring tensionWeak magnetWorn bushingsWeak batteryStarter turns, but overrunning drive pinion does not mesh with ring gearWorn drive pinion gearDefective drivePoor movement of drive on splinesWorn drive bushingWorn ring gearStarter motor keeps runningShorted starting solenoid switch windingMelted solenoid contactsSticking or defective starter drive pinionREMEDY Turn switch in the ON positionCheck main fuse and wiring conditionSet transmission either in Park or Neutral or use the override modeClean and tighten terminal(s)Recharge batteryCheck and replace defective part