Vintage Dirt Bike Q & A

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PostPosted: Tue Dec 20, 2016 9:46 am 
Hi All

Anyone have a shop manual pdf file that shows how to replace the kick starter shaft on a 1975 Cr 125??

It looks like the case has to be split open after I removed the clutch cover!! I heard one did not have to split the case.

Thanks in Advance

Steve


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PostPosted: Tue Dec 20, 2016 6:23 pm 
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Joined: Thu Jan 03, 2013 6:30 pm
Posts: 89
Steve

I went out to my mega stash O snore parts for a look see for you.
You WILL need to split the cases. see photos:
IF you need to remove the kickstart shaft it WILL just come out. Problem is when you re install the new one the kick start return spring (which is inside the cases) will be almost impossible to orient
and find as it can just fall free in the cases.
I just tried it on the bench and it was a no go.
Split the cases to R & R a kickstart shaft.

While ur in there check ALL the shift forks for any signs of galling on their sides or for any bent ones. replace if u c galling and then clean the slider counterpart they fit in to remove any burrs.
Check the shift fork shafts in "V" blocks for bent ones, lightly polish the surfaces with OO steel wool.
Match the cylinder transfers to the case transfers (be sure to match the base gasket after.
Polish the intake side of the rod.
Thread lock the kickstart pin/nut/allen.
replace all seals.


go out and win!

good luck


Attachments:
File comment: The shaft on the clutch side of the case shows where the kickstart shaft stop muse be. roughly @ 5:30 where it stops on the allen bolt at 6:00
This is the same bolt thru case to pin where the return spring sets against

125 outer.jpg
125 outer.jpg [ 11.31 KiB | Viewed 2934 times ]
File comment: Inside the case shows how the return spring fits on the shaft and its post.
125 inner.jpg
125 inner.jpg [ 32.36 KiB | Viewed 2934 times ]

_________________
1994 AHRMA National Champion Sportsman 125 Intermediate.
1996 AHRMA National Champion Classic 125 Expert.
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PostPosted: Thu Jan 05, 2017 10:23 am 
Thanks you Sir

Very helpful info.

Spring was a bit of a challenge, but I got it.

Trans in very good shape. Not much else in that engine. Simple, efficient.

Steve


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