Mercury Mariner Service Manual 6, 8, 9.9 210CC Sailpower, Page 27Get this manual
Starter Circuit Troubleshooting Flow Chart
I Starter Motor Does Not Turn
SAFETY WARNING: Disconnect yellow (starter motor) cable from starter solenoid test Point BEFORE making teststo prevent unexpected engine cranking
Use an ohmmeter (R scale) and connect meter leads between negative battery post and common power head groundNo Continuity Indicated
There is an open circuit in the black negative battery cable between the negative (-) battery post and the powerhead aCheck cable for loose or corroded connectionsbCheck cable for open
Continuity Indicated
aConnect voltmeter between common engine ground and Test Point 2bPush start switchI
Connect voltmeter between commonengine ground and Test Point 812 Volt Reading "
No Voltage Reading
aConnect voltmeter between common engine ground and Test Point 3bPush start switch
-I Defective starter solenoid
12 Volt Reading "
12 Volt Reading
Yellow-red wire is open between Test Points and 3No Voltage Reading
aConnect voltmeter between common engine ground and Test Point 4bPush start switch