Clutch rattle(maybe)

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08 Aug 2020 14:38 #832427 by Ninja
Clutch rattle(maybe) was created by Ninja
Hi guys new to the forum, I've just bought a 78 z650 and it chatters a bit in 5he clutch area at tick over, tick over to slow maybe or standard rattle?

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08 Aug 2020 19:36 #832462 by krazee1
Replied by krazee1 on topic Clutch rattle(maybe)
Engines with primary chains as your 650 has are known to be especially noisy if the carbs are not synchronized for a nice smooth idle.

Mike

Former M.E. at Kawasaki Motors Manufacturing, Lincoln, NE
1966 W1 (the Z1 of 1966-50H.P. and 100mph!)
1974 Z1
1978 KZ1000 LTD
1976 KZ900B pile O parts
1980 KZ750E
1980 Honda XL250S (I know, wrong flavor!)
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09 Aug 2020 00:23 - 09 Aug 2020 01:41 #832466 by Warren3200gt
Replied by Warren3200gt on topic Clutch rattle(maybe)
It really helps tickover if the clutch basket dampers are not loose. Any misfire or stumble creates a pendulum effect making the primary chain rattle. Its a big job to do as it involves dismantling the basket to replace them and they are not available as replacements so have to be fabricated.
Pablo did a good how to thread on Charlies forum
z650.proboards.com/thread/3170/clutch-ba...-dampers-replacement


Z1000J2 somewhat modified!

Last edit: 09 Aug 2020 01:41 by Warren3200gt.

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09 Aug 2020 05:58 #832469 by 650ed
Replied by 650ed on topic Clutch rattle(maybe)

Ninja wrote: Hi guys new to the forum, I've just bought a 78 z650 and it chatters a bit in 5he clutch area at tick over, tick over to slow maybe or standard rattle?


What is the idle speed set to? If it's set below 1000 rpm the rattle will occur. My 1977 KZ650 with more than 61,000 miles has zero rattle at 1050 rpm, but below 1000 it does make a bit of noise. The Kawasaki manual recommends setting the idle speed to between 950 - 1050 rpm. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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14 Sep 2020 03:21 #834968 by Mhassic
Replied by Mhassic on topic Clutch rattle(maybe)
I have to a rattling noice on my 750-82, diaspears when reved over 1500. (45000km)
So it can be the carbs thats out of tune?

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14 Sep 2020 05:28 #834973 by TexasKZ
Replied by TexasKZ on topic Clutch rattle(maybe)

Mhassic wrote: I have to a rattling noice on my 750-82, diaspears when reved over 1500. (45000km)
So it can be the carbs thats out of tune?


Possibly. I think the best approach is to insure that ALL of the routine maintenance, as described in the owner's manual and in the factory service manual, is up to date and within specification. All of it.
If the noise persists, then is the time to look at more complicated and expensive possibilities like clutch basket dampers.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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