Starter ground issue - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Includes Electrical mods, Lights, Stator,
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post #1 of 6 (permalink) Old 05-17-2019, 03:49 PM Thread Starter
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Starter ground issue

I'm almost back on the road after a total rebuild of my 93. Tried to start for the first time, only the starter relay was buzzing. After some forum reading and trying the 2 wire mod thing, nothing. Then I took a jumper cable, clamped to one of the mounting bolts on the starter and the other end to a bolt on the frame and wah-la, it's trying to start now!! So the question...I read that those mounting bolts on the starter are the ground for the starter, since they go straight into the engine block, I took both out, gave them the wire brush treatment, even a little dieletric grease, and still no good ground. What's the deal here???
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post #2 of 6 (permalink) Old 05-17-2019, 06:27 PM
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Strange problem, since the starter grounds on the engine, and it appears your engine is still grounded.

Check the ground cable(s) from the battery, at both ends.

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__________________________________________________ ____________
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post #3 of 6 (permalink) Old 05-19-2019, 11:22 AM Thread Starter
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Additional info on ground issue

Forgot to mention that the the netruel and oil light that are suppose to come on when the ignition is turned on, only does that when I have that jumper cable making the ground. If I remove the jumper cable, back to no starter action, and those lights only light up when I squezze the clutch halfway with the ignition on. How's that for weird? I just don't understand how my starter isn't grounded!!!!
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post #4 of 6 (permalink) Old 05-19-2019, 11:40 AM
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You put the ground jumper on the frame, so your frame is grounded but the engine is not. Check the ground cable on the engine, it may come from battery box or frame and should be near the back of the engine on top of the transmission. It's one of the largest cables, same size or slightly larger than the starter positive cable. All grounds on the bike should black w/yellow stripe.

The neutral switch works from ground, engine isn't grounded so it can't work.

If there's no ground cable from the engine to the frame, or battery, that's the problem. The cable can also be corroded internally.
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2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #5 of 6 (permalink) Old 05-21-2019, 09:40 AM Thread Starter
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Ahh Ha!! Thank you Spockster!! I guess the fresh paint on the frame at the battery holder was the issue. I had to scratch some paint of behind the bolt where the engine ground comes up to that bolt. Now safely grounded!! One last issue, carb adjustment. See you in that section!!! Cheers!! Nick
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post #6 of 6 (permalink) Old 05-21-2019, 09:52 AM
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Originally Posted by Superflydisco View Post
Ahh Ha!! Thank you Spockster!! I guess the fresh paint on the frame at the battery holder was the issue. I had to scratch some paint of behind the bolt where the engine ground comes up to that bolt. Now safely grounded!! One last issue, carb adjustment. See you in that section!!! Cheers!! Nick
Hey you're welcome! Being a blind squirrel, I sometimes find a nut, but I'm damn hungry when I finally do.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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