I pulled my cylinder off 2 weeks ago. I re-assembled up to the point of getting the cam chain back on. It wasn't long enough and I was totally dumbfounded. I figured it out this morning, FINALLY!! When I put the cylinder back on, I dropped the forward cam chain guide back in. Unbeknownst to me, a loop had formed below the lower sprocket. When I rotated the engine through, everything worked fine. Because of the close tolerance between the cam chain guides and the cam chain, the loop in the bottom stayed there. It was not visible in any way from above. I had to pull the cylinder off, pull out the forward guide, pull the chain taut from the after (trailing) side of the lower sprocket and rotate the engine clockwise. The loop pulled through and "VOILA", french fries, french dressing and all those other french words, everything is as it should be. I popped the forward guide back in. Even if the chain falls into the engine, the guides keep the chain on the lower sprocket. All you have to do is fish it out.
I didn't know that part.
99 WR, 84 Kaw 900 Ninja, '82 Honda
CB750F clothes hanger, '84 Honda Z50 "Berm Destroyer". Always thinkin' "Hell, this worked on my 2 stroke!!"
[This message has been edited by Kevin in New Hampshire (edited 04-16-2000).]