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  • 1 Post By Mr. Bubs
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Old 05-01-2014
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starter wont engage

i have a universal m25 i have tried jumping the starter across the solonoid the bendix kicks out but the starting motor doesnt turn have proper amount of volts at starter its new and new batter new on off switch new glow plug switch cleaned a[[ of the connections HELP
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Old 05-01-2014
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Re: starter wont engage

Need some more punctuation in that post. Oh, and welcome to the forum.
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Old 05-01-2014
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Re: starter wont engage

Check the ground connections. Also, be sure the cables are of adequate size, preferably AWG 1/0.
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Old 05-01-2014
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Re: starter wont engage

If the bendix is only going part way out and not engaging the flywheel, it could be corrosion on the shaft rather than low voltage. The good thing is it's free to find out. Take the starter out and polish the bendix shaft with emery cloth, then lightly grease it and reassemble everything.

It might crank. That's all that was wrong with my Yanmar last time that happened.
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Old 05-01-2014
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Re: starter wont engage

Sounds like your starter might be going. The brushes in the starter wear over time. A simple test is to tap on the housing, with a hammer while someone is holding the key in the start position. If starts then, you have worn brushes. Simply pull it of and take it to a rebuild shop.
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Old 05-02-2014
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Re: starter wont engage

If you can get the starter to work off the engine, I'm guessing it's probably a bad connection or cable.
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Re: starter wont engage

The good news is that there are only about four or five things that could be wrong, and only one of them (bad starter) will cost very much.

There are some simple diagnostic steps.

1. Is the starter actually spinning but not engaging the flywheel (you will have to have your head down really close to the starter while someone hits the start button as it is amazing how quiet a starter is if it's not actually turning the motor over. If it is running, it's the bendix problem.

2. If it is not turning, the next thing to do is jump the solenoid by connecting the two posts together on the starter that the solenoid is connected to.
If it turns over, you have a bad solenoid or a bad starter switch.

3. If it doesn't turn over then, you have a bad starter.

That's a very rudimentary instruction, and not every possible thing that could be wrong, but a good book (like Nigel Calder's) is a good place to learn to do stuff.

Either that or have driven a lot of POS cars and trucks growing up that you had to fix all of the time.
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