Starting System; Starting System Components; Description; Troubleshooting The Starting Circuit - Mercury 40 Service Manual

Starting System

Starting System Components

The starting system consists of the following compo-
nents.
1. Battery
2. Starter Solenoid
3. Neutral Start Switch
4. Starter Motor
5. Ignition Switch

Description

The function of the starting system is to crank the en-
gine. The battery supplies electrical energy to crank
the starter motor. When the ignition switch is turned
to "START" position, the starter solenoid is activated
and completes the starting circuit between the bat-
tery and starter.
The neutral start switch opens the start circuit when
the shift control lever is not in neutral. This prevents
accidental starting when engine is in gear.
CAUTION
The starter motor may be damaged if operated
continuously. DO NOT operate continuously for
more than 30 seconds. Allow a 2 minute cooling
period between starting attempts.
90-852572R1 JANUARY 1998

Troubleshooting the Starting Circuit

Before beginning the starting circuit troubleshooting
flow chart, following, check first for the following con-
ditions:
1. Make sure that battery is fully charged.
2. Check that control lever is in "NEUTRAL" posi-
tion.
3. Check bullet connectors for corrosion and loose
connections.
4. Check cables and wiring for frayed and worn in-
sulation.
5. Check in-line fuse in RED wire; see diagram.
ELECTRICAL - 2B-11