jeroen_decker

Hello, I have an LB80 with a crankshaft that has its thread pretty much chewed up. I have an LB50 motor and I figured I swap out some of the main parts like the transmission, cylinder, piston, electrical. I am counting on the fact that the engines are pretty much the same except perhaps for those parts. Does anyone know if there are any major differences between the two engines besides the cylinders, pistons and carbs? Thank you, Jeroen

I found another oil pump and confirmed that the washer slides over the plunger before the spring. I can only deduce that I tightened the bolts unevenly which put pressure on the internal workings of the pump.

Hi there, I just picked up a Chappy LB50 that had been severely abused. I pulled every single component of the bike apart for a thorough cleaning and inspection. When putting the oil pump back together I had a washer left over (this is never good). I checked all the part schematics but none of them show the internals of the pump (when you get to the plunger and spring mechanism). I am looking for someone who has pulled the oil-pump completely apart (or has an old pump and willing to pull it apart) and can give me some guidance on where this 1/2 inch washer might fit within the oil-pump chamber. The hole of the washer is about 1/4 inch. When I slide it against the plunger wall next to the spring the pump no longer rotates when tightening the bolts. I appreciate any help. https://www.dropbox.com/s/oprvcxslo7rqb6m/Chappy02.jpg Thank you, Jeroen

Hi all, I just purchased a very abused Chappy to bring it back to life with the help of my 10 and 5 year old sons. After taking it all apart I am finding lots of issues. Should be fun. I am hoping I can lean on your expertise a bit. I have a picture attached of how the bike looked when we brought it home. Thanks for your help. https://www.dropbox.com/s/oprvcxslo7rqb6m/Chappy02.jpg Jeroen