ENGINE ELECTRICAL
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Starting System
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Carbon-pile rheostat
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16F0294
16FO293
FREE RUNNING TEST
(1)
Place starter motor in a vise equipped with soft jaws and
connect a fully-charged
12-volt
battery to starter motor as
follows:
(2) Connect a test ammeter (loo-ampere scale) and carbon pile
rheostat in series with battery positive post and starter
motor terminal.
(3) Connect a voltmeter
(15-volt
scale) across starter motor.
(4) Rotate carbon pile to full-resistance position.
(5) Connect battery cable from battery negative post to starter
motor body.
(6) Adjust rheostat until the battery voltage shown by the
voltmeter is 1 IV.
(7) Confirm that the maximum amperage is within the speci-
fications and that the starter motor turns smoothly and
freely.
Current: max. 90 Amps
RETURN TEST OF MAGNETIC SWITCH
(1) Disconnect field coil wire from M-terminal of magnetic
switch.
(2) Connect a 12V battery between M-terminal and body.
Caution
This test must be performed quickly (in less than
10
seconds) to prevent coil from burning.
(3) Pull pinion out and release. If pinion quickly returns to its
original position, everything is in order. If it doesn’t, replace
magnetic switch.
STARTER RELAY
(1) Remove the starter relay from the relay box.
(2)
Connect battery to terminal 2 and check continuity between
terminals with terminal 4 grounded.
Power is supplied
3-4 terminals
3-5 terminals
No continuity
Continuity
Power is not
supplied
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