Engine Will Not Crank Over; Charging System Inoperative - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23

Engine Will Not Crank Over

Remote control lever not in neutral posi-
tion
Battery charge low; damaged wiring; loose
electrical connections
Circuit breaker tripped
Blown fuse
Ignition switch
Slave solenoid
Faulty neutral start safety switch
Starter solenoid
Starter motor
Mechanical engine malfunction

Charging System Inoperative

Loose or broken serpentine belt
Engine rpm too low on initial start
Loose or corroded electrical connections
Faulty battery gauge
Battery will not accept charge
Faulty alternator or regulator
Refer to SECTION 4C for complete
"Charging System" diagnosis procedures
Index Index
90-861326--1 MARCH 1999
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Cause
Cause
Special Information
Open circuit
Special Information
Rev engine to 1500 rpm
Best way to test is to replace gauge
Low electrolyte or failed battery
TROUBLESHOOTING
Page 1C-11