shift drums wrong position (KZ750 Shafty)

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21 Jan 2020 09:05 #817551 by Surt
hi all! assembled the whole bike, but when tried to change gears, nothing had happened, obviously i put the shift drum in wrong position. the question is can it be cured with a little blood (without splitting the crank case)? thanks heaps in advance, disassembling the whole bike would be a fucking disgrace for me pardon my french

ZN750 Ltd Shaft (non-USA)
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21 Jan 2020 13:51 #817561 by 650ed
Replied by 650ed on topic shift drums wrong position (KZ750 Shafty)
When trying to change gears were you able to shift from neutral to 1st gear? If so, that's all the tranny is supposed do unless the bike is running - Kawasaki built that in as a safety device. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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21 Jan 2020 15:07 - 21 Jan 2020 15:09 #817564 by Surt
hi Ed, nup, its stuck in the 1st gear i guess, its clicking but not changing. saying that from memory, coz the ride was delayed 1.5 ys ago due to serious circumstances, now im back into it, recalling where i stopped

ZN750 Ltd Shaft (non-USA)
Last edit: 21 Jan 2020 15:09 by Surt.

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23 Jan 2020 10:18 #817681 by Surt
like i said, u can change gear up, just once. then down, but the wheels still blocked, ANY IDEAS?

ZN750 Ltd Shaft (non-USA)

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01 Feb 2020 14:04 #818371 by Surt
the buggers sorted, thanks every one for attention and silent support

ZN750 Ltd Shaft (non-USA)
The following user(s) said Thank You: gordone

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01 Feb 2020 14:22 #818374 by gordone
Replied by gordone on topic shift drums wrong position (KZ750 Shafty)

Surt wrote: the buggers sorted, thanks every one for attention and silent support


Good news :)

What was the problem?

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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22 Feb 2020 00:00 #819672 by Surt
just over tightened nut on the rear wheel axle, looks weird to me tho, perhaps ive missed a spacer?

ZN750 Ltd Shaft (non-USA)
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22 Feb 2020 00:10 #819673 by Surt
also i do know that i didnt installed a 92081 spring coz i had lost it somewhere. i dont think its crucial coz ive never seen such a spring in other drive shafts and the spring looks weak... but i might be wrong?

ZN750 Ltd Shaft (non-USA)
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22 Feb 2020 07:23 #819687 by TexasKZ
Replied by TexasKZ on topic shift drums wrong position (KZ750 Shafty)
Every shaft drive bike Kawasaki has ever made, including the current Concours, uses a coil spring in that spot. It keeps tension on the two parts of the shaft so that they do not make clanking noises as the suspension moves up and down, also protecting the spring loaded retaining pin from damage or breakage. It is unlikely that Kawasaki would have gone to the expense of designing he collar for that spring and the expense of installing it and putting it in inventory if the engineers did not think it was necessary.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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22 Feb 2020 10:38 #819695 by Surt
one half shaft is held by a circlip, another one by a nut, i cant imagine how they can hit each other and what kind of pre load the tiny spring can provide, its like putting a spring inside a car drive shaft/
and what about the blocked rear wheal coz of over tightened nut?

ZN750 Ltd Shaft (non-USA)

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22 Feb 2020 13:46 #819700 by TexasKZ
Replied by TexasKZ on topic shift drums wrong position (KZ750 Shafty)
By all means, leave out any parts you deem unnecessary.

When a rear wheel locks as a result of tightening the axle nut, the most frequent cause is a missing, incorrectly installed, or incorrect spacer. Pay very close attention to the order and orientation of those parts when reassembling.

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

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