Hey fellas,
I recently picked up a 1996 Yamaha PW80. The bike appears to have been abused pretty good but I think it can be resurrected with some TLC. Frame and bodywork are good but the motor is cooked by what I can see.
I am a novice at working on bikes but have been doing it for a couple of years now so I am fairly competent.
Here is what I have found so far:
Carb is completely gummed and is currently disassembled and soaking in carb dip - no problem.
The motor is out of the bike and on my bench. it would not kick over meaning that the kick starter comes up solid and will not rotate the engine. Seized piston maybe? Nope, I removed the head and the jug so the piston is just floppin' and still cannot get any crank rotation. I was surprised to find little to no oil inside the crank casing but there was plenty of oil in the clutch casing and everything looked well enough in there. The stator has a lot of rust around it and I can actually get a wee bit of a turn on the crank when I rotate the the stator by hand but it comes up solid in either direction?
So the question is:
What do you think is jammed, seized or whatever? Could the crank itself be seized from lack of lubrication?
I have never worked on a cetrifigal clutch before, but I am assuming that I need to tear it all down to get to the crank innerds....
Any help is appreciated
Bernie
I recently picked up a 1996 Yamaha PW80. The bike appears to have been abused pretty good but I think it can be resurrected with some TLC. Frame and bodywork are good but the motor is cooked by what I can see.
I am a novice at working on bikes but have been doing it for a couple of years now so I am fairly competent.
Here is what I have found so far:
Carb is completely gummed and is currently disassembled and soaking in carb dip - no problem.
The motor is out of the bike and on my bench. it would not kick over meaning that the kick starter comes up solid and will not rotate the engine. Seized piston maybe? Nope, I removed the head and the jug so the piston is just floppin' and still cannot get any crank rotation. I was surprised to find little to no oil inside the crank casing but there was plenty of oil in the clutch casing and everything looked well enough in there. The stator has a lot of rust around it and I can actually get a wee bit of a turn on the crank when I rotate the the stator by hand but it comes up solid in either direction?
So the question is:
What do you think is jammed, seized or whatever? Could the crank itself be seized from lack of lubrication?
I have never worked on a cetrifigal clutch before, but I am assuming that I need to tear it all down to get to the crank innerds....
Any help is appreciated
Bernie