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Starter Motor Clutch; Field Coils - Kawasaki KZ400 Service Manual

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Table of Contents
228 MA1 NTENANCE-ELECTRICAL
Table K9
Commutator Groove Depth
Service Limit
1
0.2
mm
I
Using the x 1
R
ohmmeter range, measure the re-
sistance between any two commutator segments.
I f
there is a high resistance or no reading between any two
segments, a winding
is
open and the armature must be
replaced.
A. Armature
B. Commutator Segments
Using the highest ohmmeter range, measure the re-
sistance between the commutator and the shaft.
I f
there is any reading at all, the armature has a short
and must be replaced.
motor terminal. I f there is not close to zero ohms, the
field coils have an open and the yoke assembly must
be replaced.
A.
Terminal
B. (+) Side Carbon Brush
Using the highest ohmmeter range, measure the resist-
ance between the
(+)
side carbon brush and the yoke
(housing). I f there i s any meter reading, the coils are
shorted t o ground and the yoke assembly must be re-
placed.
A.
(+I
Side Carbon Brush
B. Yoke
A. Commutator
B. Shaft
Even i f the foregoing checks shows the armature to
be good, i t may be defective in some manner not readily
detectable with an ohmmeter. I f all other starter motor
and starter motor circuit components check good, but
the starter motor still does not turn over or only turns
over weakly, replace the armature with a new one.
Field coils
Using the x
1
R
ohmmeter range, measure the resist-
ance between the
(+)
side carbon brush and the starter
Starter Motor Clutch
Fig. K43 shows starter motor clutch.
The clutch
body
3
is connected to the crankshaft
3
through the
secondary sprocket and the primary chain. When the
starter clutch gear
2
rotates in the direction o f the
arrow, each o f the three rollers
4
,
pushed by its spring
6,
is wedged into the narrower space between the
clutch body and the starter clutch gear hub (the portion
jutting out from the ,gear), thereby locking the clutch
body and starter clutch gear together. With these two
locked, starter motor rotation is transmitted to the
crankshaft through the starter idle gear, starter clutch
gear, rollers, clutch body, secondary sprocket, and
primary chain.

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