Starter Clutch Help - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 21 (permalink) Old 09-02-2017, 04:04 PM Thread Starter
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Starter Clutch Help

How do I go about removing the starter clutch? Also, I just want to confirm.. this is the starter clutch correct? https://imgur.com/a/ZxQ89

2006 Vulcan 750 - 30k miles

Last edited by Vulcan757; 09-02-2017 at 04:04 PM. Reason: Picture
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post #2 of 21 (permalink) Old 09-02-2017, 05:43 PM
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That's it behind that largest gear.

Do you have a manual? Can download one for free. Should check to make sure there's no left-hand threads there, also need to observe any timing marks if there are any, because the balance shaft is involved. Other than that, should be just the one bolt on that gear.

Might also need Loctite, but check the manual.

PS - You can slip a penny between the gear teeth to hold them from moving. Or some people stuff a rag in there.

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__________________________________________________ ____________
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 #3 of 21 (permalink) Old 09-02-2017, 05:52 PM Thread Starter
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Quote:
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That's it behind that largest gear.

Do you have a manual? Can download one for free. Should check to make sure there's no left-hand threads there, also need to observe any timing marks if there are any, because the balance shaft is involved. Other than that, should be just the one bolt on that gear.

Might also need Loctite, but check the manual.

PS - You can slip a penny between the gear teeth to hold them from moving. Or some people stuff a rag in there.
Yep, I have the Clymer manual. That bolt is on there good!

2006 Vulcan 750 - 30k miles
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post #4 of 21 (permalink) Old 09-02-2017, 06:00 PM
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Quote:
Originally Posted by Vulcan757 View Post
Yep, I have the Clymer manual. That bolt is on there good!
According to my manual, that bolt is left-hand thread and has non-permanent threadlocker on it, so probably blue Loctite.

Punch marks on the shaft and starter clutch to align, starter clutch is also the right side balancer.

2003-21k mi
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__________________________________________________ ____________
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 21 (permalink) Old 09-02-2017, 06:11 PM
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There's additional info on the clutch assembly under the electrical section, for the starter.

2003-21k mi
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__________________________________________________ ____________
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 #6 of 21 (permalink) Old 09-02-2017, 06:21 PM Thread Starter
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Great, I will check that section. My neighbor has an impact driver, might have to borrow that

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post #7 of 21 (permalink) Old 09-02-2017, 06:26 PM
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Great, I will check that section. My neighbor has an impact driver, might have to borrow that
Impact would help, probably wouldn't need to block the gears until tightening it.

I hope that info about the left-hand threads is correct. The left side of the balancer is left-hand, so I'll say that's probably correct also.

Left-hand threads - turn right to loosen, left to tighten.

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 #8 of 21 (permalink) Old 09-03-2017, 02:10 PM Thread Starter
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I am stumped. I was able to remove the starter clutch and inspect. I don't see any issues with any of the parts. What would you check next? When I hit the starter it spins the starter clutch gear but does not engage, just spins freely. From everything I have gathered online it sounds like starter clutch issue, I can't visually see what can be causing it not to engage.

https://imgur.com/a/x1rd4

2006 Vulcan 750 - 30k miles
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post #9 of 21 (permalink) Old 09-03-2017, 02:31 PM
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Did you test the clutch before taking it off? Sounds like you already know it's not working, but there is a test.

Honestly, I've not had to deal with one yet. But it's supposed to slip one way, and grab the other direction. I'm not sure how this is accomplished, but do you see anything that could be affected by varnish to the point of sticking? Springs, ball bearings, hinged dogs that slide in/out, the whole clutch maybe slides in/out on the shaft? Maybe the 'clutch' slides out on the shaft which then engages the gear? (should see a set of spiral grooves on the shaft) If there are no actual moving parts on the clutch, maybe the shaft needs a good cleaning? Should be able to try this without putting it all back together.

From your description, it definitely sounds like the clutch doesn't engage, and that's the end of the line for the starter setup. Has to be right there. The starter is turning the gears, but clutch isn't engaging.

I seem to recall posts where cleaning was done and fixed engagement issues. Some had failed to engage but then were ok after a push start and warmup.

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 #10 of 21 (permalink) Old 09-03-2017, 02:52 PM
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Looking at some other pics online.... Maybe that inner 'sprag' acts with that outer race. Like a sprag clutch in an automatic trans. Can you put them together and see if there's any one-way action?

I see some wide splines on the shaft, but nothing spiral that would have it sliding in/out when rotated.

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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