General Information; Starter Drive Service - Except Models 540000, 610000 - Vanguard OHV V-Twin User Manual

GENERAL INFORMATION

The starter motor uses a gear engagement method,
similar to an automotive starter. When the starter
motor is activated, the pinion gear engages a ring
gear attached to the engine flywheel and cranks the
engine. Three starter motors are used on
Vanguard V-Twin engines, Figs. 1-3.
Nylon Pinion
The starter motor shown in Fig. 1 has a nylon pinion
gear and is used only on flywheels equipped with an
aluminum ring gear. These starters use either a
C-ring or roll pin to retain the pinion gear. The
flywheel ring gear is replaceable.
Fig. 1
Steel Pinion
The starter motor shown in Fig. 2 has a steel pinion
gear and is used only with flywheels equipped with
a steel ring gear. The flywheel ring gear is NOT
replaceable.
Fig. 2
Solenoid Shift
The starter motor in Fig. 3 uses a solenoid to engage
the flywheel, and is equipped with a steel ring gear.
The flywheel ring gear is NOT replaceable.
Fig. 3
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STARTER DRIVE SERVICE
Except Models 540000, 610000
The nylon pinion starter drives use either the C-ring
retainer, Fig. 4 or the roll pin retainer, Fig. 5. The
steel pinion starter drive is shown in Fig. 6. When the
starter motor is activated, the pinion gear should
engage the flywheel ring gear and crank the engine.
If it does not, inspect the helix and the pinion gear for
freedom of operation.
Inspect the pinion gear (1) for damaged teeth. The
gear must move freely on helix (2), Figs. 4, 5 or 6.
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Fig. 4
Fig. 5
Fig. 6
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