Cb200 cam chain adjuster and Kickstarter

Hi Chaps

Very good weather in Scotland this week, so work getting done, and questions to ask.

Can anyone tell me if the cam chain adjuster bolt is just a plain bolt. The one on will move but I can't move the locknut. I didn't want to draw all the way out until I find out. If it's plain, I will just replace.

Also on my bike, Kickstarter shaft has worn splines. I have a new part to eventually replace it. But in the meantime, has anyone ever had success recutting spline with fine Dremel disk. I don't want to go down the weld bodge.

Last question, would it be possible to replace Kickstarter mechanism by only taking off the bottom of crankcase. So pretty much having engine upside down.

Thanks

David

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Based on this picture from one of our threads, it can be done (but of course both crankcase covers and the clutch/oil pump pair must come off and shift shaft removed)

https://imgur.com/NgP86bo

And, the cam chain tensioner lock bolt is NOT a standard bolt, 2 different threads on it

https://www.cmsnl.com/honda-cb200t-1975-usa_model426/bolt-tensioner_90009315000/

ancientdad said:

And, the cam chain tensioner lock bolt is NOT a standard bolt, 2 different threads on it

https://www.cmsnl.com/honda-cb200t-1975-usa_model426/bolt-tensioner_90009315000/

Click to expand...

Would it be possible to remove the bolt, I can then clean up threads with a die, and then put it back in? Does it just screw into hole, and lean on the chain tensioner, or does it go into a subsequent threaded hole on the tensioner.

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Smudger said:

Would it be possible to remove the bolt, I can then clean up threads with a die, and then put it back in? Does it just screw into hole, and lean on the chain tensioner, or does it go into a subsequent threaded hole on the tensioner.

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Click to expand...

Yes, it just screws into the head and it doesn't "lean" on the tensioner rod, it pushes directly into it at 90° to the rod to hold it in place after adjustment. The larger threads on the bolt are for the lock nut to hold it in place after tightening. You'll need to properly adjust the cam chain afterward, since the engine might be in a point of rotation where valves being opened might put reverse rotational force on the cam effectively tightening the opposite side of the chain causing looseness in the chain on the adjuster side when you reinstall the bolt without proper adjustment.