TM 5-4240-501-14&PThe pinion gear should be inspected for damaged teeth.If a sticking condition exists between the pinion gear andthe helix, this must be corrected. The parts may bewashed in a solvent such as Stanasol or Varsol. Thegear, retainer, roll pin and clutch assembly are availablefrom your Briggs & Stratton source of supply if required.Fig. 87 - Disassembling Starter Motor DriveASSEMBLING STARTER MOTOR DRIVEReverse disassembly procedure for assembling.Assemble the pinion gear with beveled edge on the gearas shown in Fig. 88. Assemble cup and spring on gearif original assembly was so equipped. Press or drive theroll pin through retainer slot and armature shaft hole withroll pin slot positioned as shown. The roll pin should becentered in shaft within 1/32" (0.8 mm).NOTE: ASSEMBLE WITH NEW ROLL PINONLY.Fig. 88 - Assembling Starter Motor DriveIf the original assembly is equipped with a springcap assembly, assemble cap as follows:To install plastic cap, use a socket approximatelythe same diameter as the plastic cap, for a driveras shown in Figure 89. Press cap in position, capshould lock in position when properly assembled.Briggs & Stratton- STARTERSGear Drive 12V & 120VFig. 89 - Installing Plastic CapCHECKING THE STARTER MOTORPERFORMANCEA performance test of the 12 volt DC and 120 volt ACstarter motors may be made in the following manner.12 VOLT DC STARTER MOTOREquipment Needed - (Page 8)1.A tachometer capable of reading 10,000 R.P.M. ’2.An ammeter capable of reading 0 to 25 amperes.3.A 12 volt : 0.3 battery.Connect the starter motor, battery and ammeter asshown on the accompanying illustration. See Fig. 90.Refer to Fig. 91 for specifications.NOTE: To test starter motor ON ENGINE, refer to Briggs& Stratton #19236 VOA meter Instruction Manual.Fig. 90 - Checking Starter Motor Performance25
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