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Clutch friction plates ?
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Clutch friction plates ? 29 Jun 2020 11:44 #829331

  • Ronnie_D
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Hello All.

My 1978 KZ1000 A2 clutch is slipping on heavy throttle. I am going to try new springs first. Then, if needed friction plates.
Would any one know the minimum thickness and the new thickness for the friction plates?

your help is appreciated,
Ronnie.

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Clutch friction plates ? 29 Jun 2020 11:55 #829336

  • Mikaw
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Have you adjusted the clutch cable back to factory to rule out misadjustments
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Clutch friction plates ? 29 Jun 2020 12:05 #829339

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Mikaw wrote: Have you adjusted the clutch cable back to factory to rule out misadjustments


Yes, I am sure it's the springs or the friction plates, probably both.
thanks.

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Clutch friction plates ? 29 Jun 2020 12:20 #829340

  • Mikaw
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I found the information once before for another member hopefully I can find it again... it was listed on the web somewhere that I just need to dig up
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Clutch friction plates ? 29 Jun 2020 12:22 #829341

  • Mikaw
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Partzilla says …

9- friction plates
8- steel

Web search says steel plates are 2.3MM thick.... 8 x 2.3mm = 18.4mm
friction are 2.9 to 3.1 so 9 X 3.0mm = 27mm
18.4mm +27mm = 45.4mm if I'm doing math correct... here in the states we don't use MM as our first form of measurement... and I'm an Old School carpenter...
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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Clutch friction plates ? 29 Jun 2020 12:28 #829343

  • Ronnie_D
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thank you Mikaw.

I am going to open up the clutch when the gasket and springs arrive.

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Clutch friction plates ? 29 Jun 2020 13:04 #829347

  • Nessism
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From the factory service manual...

Attachments:
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Clutch friction plates ? 29 Jun 2020 14:55 #829365

  • Mikaw
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I yield to Nessism... part number Kawasaki 13088-030 is 3.8MM
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Clutch friction plates ? 29 Jun 2020 17:59 #829394

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Nessism wrote: From the factory service manual...


Thank you Nessism, Mikaw.
and kudos to this fine forum!

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Clutch friction plates ? 29 Jun 2020 20:06 #829405

  • 650ed
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What oil are you using? Using oil that is not JASO-MA certified can and will make the clutch slip! If you have any questions just ask. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Clutch friction plates ? 29 Jun 2020 20:10 #829406

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650ed wrote: What oil are you using? Using oil that is not JASO-MA certified can and will make the clutch slip! If you have any questions just ask. Ed


I use Shell Rotella T4
15w40.

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Clutch friction plates ? 29 Jun 2020 20:37 #829407

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Thanks. Shell Rotella T4 is JASO-MA certified, so the oil should not contribute to the clutch slippage. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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