Kohler COMMAND CH18, Service Manual

Page: 149 / 232

8.25
Section 8
Electrical System and Components
8
Operation - Inertia Drive Starters
When power is applied to the starter, the armature
rotates. As the armature rotates, the drive pinion
moves out on the splined drive shaft and into mesh
with the flywheel ring gear. When the pinion reaches
the end of the drive shaft, it rotates the flywheel and
“cranks” the engine.
When the engine starts, the flywheel rotates faster
than the starter armature and drive pinion. This moves
the drive pinion out of mesh with the ring gear and
into the retracted position. When power is removed
from the starter, the armature stops rotating and the
drive pinion is held in the retracted position by the
anti-drift spring.
Starter Drive Service
Every 500 hours of operation (or annually, whichever
occurs first), clean and lubricate the splines on the
starter drive shaft. If the drive pinion is worn, or has
chipped or broken teeth, it must be replaced. See
Figure 8-34.
It is not necessary to completely disassemble the
starter to service the drive components.
Style ‘‘A’’ Drive Service
1. Remove the starter from the engine and remove
the dust cover.
2. Hold the drive pinion in a vice with soft jaws
when removing or installing the stop nut. The
armature will rotate with the nut until the drive
pinion stops against internal spacers.
NOTE: Do not overtighten the vise as this can
distort the drive pinion.
3. Remove the stop nut, stop gear spacer, anti-drift
spring, dust cover spacer, and drive pinion.
4. Clean the splines on drive shaft thoroughly with
solvent. Dry the splines thoroughly.
5. Apply a small amount of Kohler electric starter
drive lubricant, (see Section 2) to the splines. The
use of other lubricants may cause the drive
pinion to stick or bind.
6. Apply a small amount of Loctite ® No. 271 to the
stop nut threads.
7. Install the drive pinion, dust cover spacer, anti-
drift spring, stop gear spacer, and stop nut.
Torque the stop nut to
17.0-19.2 N·m
(150-170 in. lb.) . Reinstall the dust cover.
Dust Cover
Drive Nut (Collar)
Dust Cover Spacer
Retaining Ring
Anti-Drift Spring
Drive Pinion
Dust Cover
Stop Nut
Stop Gear Spacer
Anti-Drift Spring
Dust Cover
Spacer
Drive Pinion
Style ‘‘A’’
Style ‘‘B’’
Style ‘‘A’’
Style ‘‘B’’
Spring Retainer
Figure 8-34. Inertia Drive Electric Starter.