03 KX100/RM100 Powervalve install question.

[snb73]

I just purchased a 2003 RM100 for my girlfriend. It was a bit dirty, and lacked some bottom end. I took the top end apart to check the internals, it looked surprizingly good. I'm not sure if the powervalve was working correctly. I cleaned it real well, but have a reinstall question.

When installing the cylinder and sliding the powervalve rod into the engine, which way do I preload it? When looking down from above the motor, should I rotate the rod clockwise(so the exhaust port is open) or do I rotate the rod counterclockwise (so the powervalve is restricting the exhaust port).

Thanks, Steve.

P.S. The manual is on the way.

 

[snb73]

I figured it out. The rod needs to be disconnected from the powervalve and preloaded counter-clockwise while installing the head. There is a detent on the rod that lines up with a raised line on the case. I removed the powervalve cover, reved the engine and everthing was operating correctly.

The bike has more low end and a less violent hit.

Steve