Forks KZ750H

Hi all.

I cannot see the spacer on these diagram ?
www.partzilla.com/catalog/kawasaki/motor...nt-fork-80-kzy-50-e1

I have these spring set:
www.z1enterprises.com/fork-spring-kit-11-1106.html

How do I figure out what spacer I need to mine bike ?

The fork caps should be under spring pressure. In general with fork caps removed: the fork springs & spacer should reach to about the top of the fork tubes when the forks are fully extended. maybe slightly above the top of the tubes. If yours don't have a spacer, then the springs should reach the top of the fork tubes or slightly above, so that the fork caps will be under spring tension when you install the fork caps.

You could measure your fork springs then compare that measurement to the fork free spring length listed in the Kawasaki service manual. If your springs are shorter than the stock measurement, add a spacer to make up the difference. Some guys add a longer spacer to get more pre-load on the springs to compress the springs more. Whether or not you need a spacer, there should be a fork spring guide above the springs. It looks kind of like a washer.

Fork Spring Free Length from the KZ750-4 pdf. pg 211.
KZ750-E = 497 mm USA. or 477 mm for Europe or Non-USA models.

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martin_csr wrote: The fork caps should be under spring pressure. In general with fork caps removed: the fork springs & spacer should reach to about the top of the fork tubes when the forks are fully extended. maybe slightly above the top of the tubes. If yours don't have a spacer, then the springs should reach the top of the fork tubes or slightly above, so that the fork caps will be under spring tension when you install the fork caps.

You could measure your fork springs then compare that measurement to the fork free spring length listed in the Kawasaki service manual. If your springs are shorter than the stock measurement, add a spacer to make up the difference. Some guys add a longer spacer to get more pre-load on the springs to compress the springs more. Whether or not you need a spacer, there should be a fork spring guide above the springs. It looks kind of like a washer.

Fork Spring Free Length from the KZ750-4 pdf. pg 211.
KZ750-E = 497 mm USA. or 477 mm for Europe or Non-USA models.

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When is installed the caps it needed to push the spring some together, If I remember correct the spring was aprox. even with the end of the fork.
So I can remove the cap and then measure the distance from the spring to the surface of the fork?
KZ750-E = 497 mm USA. or 477 mm for Europe or Non-USA models.

I will do that and see what I get.

If the springs are even with the top of the forks, then the springs are probably the correct length.
If the springs are below the top of the fork, then measure & add a spacer.
Note: whether or not you need a spacer, there should be a fork spring guide above the springs. It looks kind of like a washer.

Fork free spring length >> Remove the fork springs to measure.

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martin_csr wrote: If the springs are even with the top of the forks, then the springs are probably the correct length.
If the springs are below the top of the fork, then measure & add a spacer.
Note: whether or not you need a spacer, there should be a fork spring guide above the springs. It looks kind of like a washer.

Fork free spring length. Remove the fork springs to measure.

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Do you know the Kawa part number for the spring washer ?

No eBay APP ID and/or Cert ID defined in Kunena configurationThe part number is in the diagram link you provided >> 44028-033 GUIDE,FORK SPRING
You could probably use washers as suggested by Z1Enterprises.com in their fork spring description.
Without the guides or washers, the fork springs will probably cause wear to the aluminum fork caps.


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Today have I measured and the distance from the top of the spring to top of the upper fork is between 8,70 - 8,92mm + the fork cap + washer also set tension on the spring with 27mm.

So my progressive spring is pushed down around 19mm.

Should these be okay ? My weight is around 110kg.

I took all measurement when there was no load on the front suspension (lifted the frame up so the wheel was free to the ground).

I have added pictures here in my project threat:
www.kzrider.com/forum/11-projects/607213...gine?start=80#798322