Clutch noise - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 07-14-2017, 05:04 PM Thread Starter
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Clutch noise

When first starting a ride(first of the day), my clutch growls or grates, and grabs when I engage it in 1st gear(regardless of how slowly I do it). Sounds like it may be dry? After I ride a couple miles the noise goes away and clutch works fine. I tried warming the system by letting the engine run on the center stand with tranny is 1st gear for a couple minutes. Made no difference. The oil level in the engine is as it should be. All suggestions or questions welcome. James

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post #2 of 8 (permalink) Old 07-14-2017, 05:24 PM
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Cofee grinder syndrome. Annoyance, not going to cause any issues with the bike

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post #3 of 8 (permalink) Old 07-14-2017, 10:20 PM
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Yay, Coffee Grinder! If I keep the RPMs low for the first couple of launches it doesn't do it. Rev it over 1500rpm and it'll grind and jerk like crazy. Lots of posts around here about the causes and possible fixes, but for my (lack of) money and time I've just learned to deal with it.

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post #4 of 8 (permalink) Old 07-15-2017, 12:31 AM
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Got my butt tossed onto the road once, wasn't expecting CGS after having a good warmup ride then parked for an hour. Dang extended sissy bar hit me right in the back too. I'll always expect it now.

I kinda suspect the previous owner went down for the same reason.

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post #5 of 8 (permalink) Old 07-15-2017, 10:38 AM
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Won't hurt anything but is annoying. What worked for me was to sit on the bike with it in neutral, and as it warmed up, to pull the clutch lever in and out a dozen or so times.

The problem seems to be caused by cold oil that has over saturated the clutch plates. The fix, via Kawasaki itself, is to drill a series of holes in the clutch basket. (There's a thread on how to do this somewhere here)
Again, not going to hurt anything and it's rare that it occours after warm up as in Spockster's case.
I replaced my clutch plates with a Kevlar racing clutch and heavy duty springs. This cured the issue......for about a year, then it returned....not as bad as before, but the same noise.

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post #6 of 8 (permalink) Old 07-15-2017, 11:24 AM
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Yup, if it throws you down on the road, it hurts. Tends to ding up the bike too. Sheared the bolts right off the sissy bar extension when it hit me.

I've found that if I 'test' the clutch in gear a couple of times after startup, those two times is all it takes. I just let the clutch out slow until it starts to grab, rinse, repeat, ride.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
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Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #7 of 8 (permalink) Old 07-15-2017, 11:34 AM Thread Starter
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It's Good to Know

Thanks for all the replies. I'm just going to live with CGS for now. I put extra "slack" in the clutch cable(lever). Hopefully the bike will not let "asphalt" grind off some of my skin.


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post #8 of 8 (permalink) Old 07-15-2017, 12:20 PM
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Quote:
Originally Posted by boscoe View Post
Thanks for all the replies. I'm just going to live with CGS for now. I put extra "slack" in the clutch cable(lever). Hopefully the bike will not let "asphalt" grind off some of my skin.

Extra slack might cause it to pull with the clutch held in, and harsh neutral to 1st gear shifts.

Asphalt is a very effective freckle and tattoo remover!

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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