KZ650 Clutch Issue

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01 Feb 2019 04:38 #798011 by Nessism
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01 Feb 2019 05:21 - 01 Feb 2019 06:23 #798015 by martin_csr
Replied by martin_csr on topic KZ650 Clutch Issue
Unrelated to the clutch adjustment. Someone got rid of the oil gauge sight glass. I would look into installing a new one. I believe Z1Enterprises has them. Or if need be, replace the clutch cover with one having the sight glass.




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Last edit: 01 Feb 2019 06:23 by martin_csr.

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01 Feb 2019 06:58 #798025 by Nessism
Replied by Nessism on topic KZ650 Clutch Issue
Looks like someone rattlecaned over the sight glass. It should be possible to clean the lens.
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01 Feb 2019 07:08 #798027 by jjdkl
Replied by jjdkl on topic KZ650 Clutch Issue
Yes it's painted over. I'll clean it or get a new one once the cover is off.

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01 Feb 2019 09:01 #798037 by martin_csr
Replied by martin_csr on topic KZ650 Clutch Issue
Paint. doh . I just glanced at the pic.




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03 Feb 2019 21:48 #798145 by jjdkl
Replied by jjdkl on topic KZ650 Clutch Issue
Many thanks to Nessism. The impact driver worked like a charm. The cover is off. I removed the lifter plate pusher and the ball bearing was in there. I then noticed that the clutch hub nut was loose. Like finger tight loose and it had backed off. I could turn it with my fingers. When the PO replaced the clutch he apperantly didn't torque it to spec and it worked itself loose. I assume that when I was pulling in the clutch lever the whole clutch assembly had moved out and that's why I ran out of adjustment. All the plates appear fine. I just need to tighten the nut down. Is this possible without the special tool? I've seen online some references to using a strap wrench. Has anyone done this? Thanks again for all the help everyone.

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04 Feb 2019 06:41 - 04 Feb 2019 06:51 #798163 by KZB2 650
Replied by KZB2 650 on topic KZ650 Clutch Issue
You can get a EBC holder tool off Ebay for 18 bucks or so.... a strap might work but you really gotta crank on it... 100 lbs or just under...... you really should replace the nut too since it had a locking tab built into it (the manual recommends it along with the thrust washer which I did too (maybe could by without it though??) ... I used blue loctite too just to be safe. Good job on finding the problem before it got dangerous for ya.

1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
Last edit: 04 Feb 2019 06:51 by KZB2 650.
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04 Feb 2019 06:59 #798166 by jjdkl
Replied by jjdkl on topic KZ650 Clutch Issue
Just bought the ebc holder and nut on EBay. Thanks KZB2!

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04 Feb 2019 19:45 #798212 by Daftrusty
Replied by Daftrusty on topic KZ650 Clutch Issue
Good catch on finding the cause of your issue! That would have made a mess if that nut came off when you were riding.

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27 Feb 2019 07:01 #799320 by jjdkl
Replied by jjdkl on topic KZ650 Clutch Issue
Final Update: After much delay due to work, family, wrong parts, and a much needed short vacation everything is back together, torqued properly, and working great. Thanks to everyone for their help and knowledge getting this fixed. Very much appreciated.

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12 Aug 2020 14:19 #832734 by BlackEyeCafe
Replied by BlackEyeCafe on topic KZ650 Clutch Issue
Are you able to provide the source for you lock nut? I can't seem to find one anywhere.
Thank you

1977 KZ650 C
Jets - Main 115 - Pilot 17.5 - Needles - Position 3 - NGK BR7ES

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