1970-1979 Ski-Doo Snowmobiles Service Manual, Page 51Get this manual
44 Starter Motor Does Not Operate
CHAPTER THREE
Drive Belt Edge Cord Failure
Loose electrical connections Discharged battery Defective starter solenoid Defective starter motor Defective ignition switch
aMisaligned pulleys bLoose engine mounting bolts
Brake Not Holding Properly
Poor Starter Performance
aCommutator or brushes worn, dirty, or oil soaked bBinding armature cWeak brush springs dArmature open, shorted, or grounded
POWER TRAIN
aIncorrect brake cable adjustment or air in hydraulic brake system bBrake lining or pucks worn cOil saturated brake lining or pucks dSheared key on brake pulley or disc
Brake Not Releasing Properly
aWeak or broken return spring bBent or damaged brake lever
Leaking Chaincase
The following items provide starting point from which to troubleshoot power train malfunctionsThe possible causes for each malfunction are listed in order of probabilityAlso refer to Drive Belt Wear Analysis, later in this chapterDrive Belt Not Operating Smoothly in Drive Pulley