I'm a French guy and this is my first post here (and also first time opening a Domi engine) because I wanted to change the cam chain for a friend's Domi and one screw maintening the chain tensioner broke while trying to take it off
I've tried all the ways to take it off from the crankcase, even welding a nut on it with flame or arc, with no chances. And after that it became too hard to drill...
So I had to open the engine. After taking head, barrel and piston off, I first saw colours on the crank, just like if it had a real hot experience once. But finally thougt it was normal because heated at the factory for the mounting of the crank pin. First question, is it really normal?
Then I found some chips in the crankcase
BTW, is the color of the conrod small end normal?
So I decided to turn the engine upside down, and guess what I've got? Other chips...
The strange thing is when I look inside the crankcase, I can't see where they come from.
Just to say they are non magnetic chips and piston is in good shape. And the conrod big end has a natural lateral play, but no vertical one.
Any idea of where they could come from? Does this already happened to somebody?
Thanks for your help.