TM 5-4240-501-14&PSlip motor pinion gear on armature shaft. Add a smallamount of gear lubricant to gear teeth. Position gasket,spring washer and drive housing assembly. Fig. 69.Fasten drive housing to end head securely with threescrews. The starter motor assembly is now ready forinstallation to the engine.GEAR DRIVE STARTERS120 VOLT AC; 12 VOLT DCSTARTER MOTOR - USED ON MODELSERIES: 170000, 190000, 220000, 240000,250000 and 320000.The 120 volt electric starter is equipped with a three-prong plug for safety. The longer prong in this plug isconnected to the starter motor housing. When thestarter motor is plugged into the three-wire cord supplied,and the cord is plugged into a properly groundedreceptacle, it will protect the user from shock should thestarter-motor insulation fail for any reason. If a longerextension cord is used with this starter, it should alsohave three-prong and three-hole plugs. Fig. 68. DONOT USE extension cords longer than 25 feet (7.62 m).These starter motors use a gear type engagementmethod, similar to an automobile starter. When thestarter motor is activated, the helix on the starter motor isactivated, the helix on the starter motor shaft drives apinion gear into engagement with a ring gear attached tothe engine flywheel and cranks the engine.CAUTION: 120 volt starter motor should first be Hi-Pottested before re-assembly to engine to determine if ashock hazard exists.Fig. 82 - 120 Volt Gear Drive StarterBriggs & Stratton STARTERSGear Drive 12V & 120VCAUTION: DO NOT run starter motors for more thanone minute without cooling 15 minutes.It is recommended a battery of 32 ampere hour capacitybe used with the 12 volt starter. The battery cable sizeshould be #4 or #6.NOTE: A battery of higher amperage may be required forextremely cold weather starting conditions.Replacing a Ring GearTo replace a worn or damaged flywheel ring gear,proceed as follows:A steel ring gear must be used on the flywheel if thepinion gear on the starter motor is made of steel, Analuminum ring gear must be used on the flywheel if thepinion gear on the starter motor is made of nylon.Fig. 83 - Replacing Ring GearWARNING: DO NOT strike flywheel with a hard object ormetal tool as this may cause flywheel to shatter inoperation, causing personal injury or property damage.23
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