4-22 ELECTRICAL
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PERFORMANCE TEST
Each test must be performed within 3 – 5 seconds to
avoid coil from burning.
#
When performing the following test, be sure to connect
the battery and the starting motor with a lead wire of
the same size as the cable that was originally used there.
PULL-IN / HOLD-IN COIL TEST
Connect battery to magnetic switch as shown in figure.
1. Check that plunger and pinion (over-running clutch) move
outward.
If plunger and pinion don’t move, replace magnetic switch.
NOTE:
Before testing, disconnect brush lead from terminal “M”.
2. While connected as above with plunger out, disconnect nega
tive lead from terminal “M”.
Check that plunger and pinion remain out.
If plunger and pinion return inward, replace magnetic switch.
PLUNGER AND PINION RETURN TEST
Disconnect negative lead from switch / motor body.
Check that plunger and pinion return inward.
If plunger and pinion don’t return inward, replace magnetic
switch.
1. Terminal “S” 3. Terminal “B”
2. Terminal “M” 4. Brush lead
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