Posted by Andrew on July 01, 2003 at 18:13:01:
In Reply to: Question about piston posted by Mike on July 01, 2003 at 03:08:26:
Hi Mike,
It's possible one or both valve stems might have been bent.
If you have the head off, checking this is easy. Put a spark plug in the head the turn it upside down. Then pour a small amount of petrol (gasoline in the US) into the combustion hemisphere. If either valve stem is bent, it will not make on effective seal with the cylinder head. The fuel will leak away. Simple.
If you've already assembled the bike, this may be the cause of non starting or low power output.
Let me know what you find.
Good luck,
Andrew