Gear Drive 12V
GEAR DRIVE STARTER MOTOR USED ON MODELS
300400 and 320400
This starter motor uses a gear type engagement method,
similar to an automobile starter. When the starter motor
is activated, the helix on the starter motor shaft drives a
pinion gear into engagement with a ring gear attached to
the engine flywheel and cranks the engine.
Recommended battery sizes range from 32 ampere hour
for normal service to 50 ampere hour for -20° F service.
CHECKING STARTER MOTOR DRIVE
When the starter motor is activated, the pinion gear
should engage the flywheel ring gear and crank the
engine. This action can be observed by removing the
blower housing. If the starter motor drive does not react
properly, inspect the helix and pinion gear for freeness of
If any sticking occurs, this must be corrected. Proper
operation of the starter is dependent on the pinion freely
moving on the helix. See Fig.
Fig. 123 - Checking Starter Motor Drive
Fig. 124 - Exploded View