SERVICE MANUAL NUMBER 23
STARTING SYSTEM
Direct Drive Starter Motor
Identification
The starter identification number is located as shown.
a
72789
a - Identification Number
Electrical Circuit Description
This is a general description of the positive current flow, from the battery and through the
system until the starter motor cranks.
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•
•
•
•
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Battery to the solenoid switch (on starter) (RED battery cable).
Solenoid switch to circuit breaker (RED).
Circuit breaker to wire junction (RED-PUR).
Wire junction to wiring harness plug (RED-PUR) terminal 6.
Wiring harness plug to 20 amp fuse (RED-PUR).
20ampfusetoignitionswitchterminalI(RED-PUR).Atthispointignitionswitchisturned
to START.
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•
Ignition switch terminal B to terminal S.
Ignition switch terminal S to neutral start switch (YEL-RED). NEUTRAL START
SWITCH MUST BE AT NEUTRAL POSITION.
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Neutral start switch to wiring harness plug terminal 7 (YEL-RED).
Wiring harness plug to starter solenoid (small terminal) (YEL-RED). Also ensure that
black (small terminal) wire is grounded.
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Starter solenoid is now “closed,” completing circuit between large terminal (RED-PUR)
and other large terminal (YEL-RED), causing starter motor to crank.
CAUTION
The starter motor is designed to operate under great overload and produce a high
horsepower for its size. It can do this only for a short time, since considerable heat
accumulates and can cause serious damage. For this reason, the cranking motor
must never be used for more than 30 seconds at any one time. Cranking should not
be repeated without a pause of at least 2 minutes to permit the heat to escape.
Index
90-861326--1
MARCH 1999
Page 4A-3
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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