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Starter testing out of boat

T

tthomp1334

Contributing Member
Trying to test starter out of boat
The starter has 4 wiring post on it, two large and 2 small.
Can get it to run with direct 12 volts
what are the two small post. I can not get nothing when I short either of the two small post to 12 volts. ?????

Thsnks
 
Neg cable to starter housing. upper large bolt gets the battery positive cable.
If you jump the inboard most small bolt the solenoid should pull the bendix in and spin the starter. the other small post allows 12v to the electric fuel pump or dist points to allow full voltage at pump or points in cranking mode
 
Just make sure the starter is held down when you test it, it will jump a bit when it cranks over & you don’t want the + & - cables to come loose & short together!
BTW the small terminal you want to jumper to the large + terminal is usually labeled S for start. It’s usually the inboard small terminal.
 
You can bypass the soleoid completely by hooking the negative cable to the mounting bolt hole and connecting the positive cable to the large terminal on the solenoid that has the cable that goes into the starter motor itself. The solenoid is an electromagnet. One of the small posts goes to ground, the other (S) gets 12v from the ignition switch when the key is turned to "start". It causes a plunger to slam down and make contact between the 2 larger contacts.
 
Oldsaltydog said:
You can bypass the soleoid completely by hooking the negative cable to the mounting bolt hole and connecting the positive cable to the large terminal on the solenoid that has the cable that goes into the starter motor itself. The solenoid is an electromagnet. One of the small posts goes to ground, the other (S) gets 12v from the ignition switch when the key is turned to "start". It causes a plunger to slam down and make contact between the 2 larger contacts.
Click to expand...
No,... It doesn't go to ground,.....
 
That would be correct for a trim solenoid, not a starter solenoid unless its used with a non-grounded base(isolated base) where the other side of the pull in coil needs to have a ground to operate, Similiar to a Ford solenoid
 
louc said:
It goes to the coil or ballast resistor
Click to expand...
On a point ignition, the other small terminal on the solenoid (I) goes to the coil.
On a carbed engines with electric fuel pump, that same terminal is wired to bypass oil pressure switch when cranking engine.

On most carbed engines with mechanical fuel pumps and electronic ign, the power to coil during cranking is done at the ignition switch.
 
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