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ihsig@sbcglobal.net

Tractor won't start

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ihsig@sbcglobal.net

308-8 will only start when jumped from a car.  Won't crank from a charging pack.  I am thinking it's the solenoid.  Any thoughts?  I last replaced about 10 years ago. 

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N3PUY

are you connecting the jump pack and the cables from the car to the same places? (battery or frame)

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ihsig@sbcglobal.net

Yes.  It will crank off the jump box, but only after charging for several hours. 

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Jerry77

Sounds like you have a bad ( maybe shorted ) battery--if the solenoid was bad it wouldn't crank from the car battery would it?  :twocents-02cents:

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ihsig@sbcglobal.net

Brand new battery...forgot to add that part.

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N3PUY

what is the battery voltage before starting?

what is the battery voltage while cranking?

what is the battery voltage when running?

 

If the battery is good then it sounds like a poor connection....

at battery or at ground.

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Ed Kennell

What tractor are we dealing with?    Is it a rocker plate engine mount?

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rmaynard

First rule of tractor electrical troubleshooting, check the grounds from battery to frame, frame to engine, engine to starter.

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