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post #22 of Old 07-12-2013
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Re: Yanmar Transmission Clutch Problem

Originally Posted by ncapener View Post

I have a 3 HM 35 engine with a KBW10 transmission.
Recently the clutch started to slip, now it does not engage at all.
I took the transmission out and the cover off. I am looking inside the housing at two shafts with gears on them, a shift fork and what appears to be clutch plates on the larger shaft.
I would like to repair/ replace the gear box myself. How do I proceed ? Drawings or pictures available anywhere? I think, I can get the parts. I am not a mechanic, but I have a good set of tools and have taken a VW transmission apart once and changed the synchro rings....
Anybody done that job and can help?

If not possible to repair, Is there a way to lock the gear box in forward to get home???

I'm haveing the same problem as you With the transmission (gearbox) model KBW-10 mounted on an old 1979 model yanmar 20QM20 motor. Where did you get the gearbox manual and how did you solve your problem? In advance tks from Norway.
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