Kohler K91 Service Manual page 92

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SHOULDER
CAPS CREW
(MOUNTING)
Service the wound-field starter as follows. Refer to
Figure 8-28.
1 .
Remove the end cap assembly by taking out
the two through bolts and carefully slipping the
end cap off of the armature .
2 . Lift the spring holding the positive brush and
remove the brush .
3 . Carefully remove the armature.
4 . Inspect both brushes (positive o n frame ; nega­
tive on end cap) . If brushes are worn unevenly
or are shorter than 5 / 1 6 " , replace them .
5 . Remove the negative brush by drilling out the
rivet holding it to the end cap . Install the re­
placement brush and rivet .
6 . Remove the positive brush by peeling back
insulating material on the field winding and un­
clipping or u nsoldering . Install the replacement
brush and clip or solder in place .
7 . Use a coarse cloth to clean t h e commutator. If
the commutator is grooved or extremely dirty ,
use a commutator stone or fine sandpape r .
NOTE : Never use emery cloth t o clean a commu­
tator.
8 . Carefully insert the armature.
8 . 2 2
FRAME
Figure 8-28. Wou nd-Field Starter - Exploded View.
WOUND FI ELD COILS
[
END PLAY
SPACER( S )
9 . Lightly coat the end cap bushing and armature
shaft with light engine oil .
1 0 . Hold the positive brush spring back and care­
fully place end cap in position on armature
shaft . Release spring after brushes are con­
tacting commutator.
1 1 . I nsert two through bolts and torque to 40 to 55
i n . lb.
1 2 . Inspect pinion and splined shaft . If any damage
is noted , replace the Bendix drive .
1 3 . If the Bendix drive is in good condition , wipe
everything clean and apply a very thin coat of
special silicone grease (Kohler Part No . 52 357
0 1 ) to the splined portion of the armature
shaft .
Permanent Mag net Bendix Drive Starter
Service
NOTE : In the event of a false start (engine starts
but fails to keep running) the engine must be al­
lowed to come to a complete stop before the
starter is re-engaged . If the flywheel is still rotat­
ing when the starter is engaged , the pinion and
ring gear may be damaged .
NOTE : Do not crank the engine for longer than 1 0
seconds . A 60-second cool-down period must be
allowed between starting attempts . Failure to fol­
low this procedure could result in starter burnout.
STARTER
TH RUST
WASHER
DRIVE
PINION
STOP NUT
( 1 30 - 1 5 0 IN. LBS . )