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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250 bottom end help needed
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[QUOTE="YZ250Guy, post: 691063, member: 38673"] I kinda went down in a mud pit and the bike fell over on me. I am working on pulling the bike apart now. I had a fun time getting the head off becuase the piston would not go down. I finally got the head to go up but since the piston would not go down I was not able to get the head off. I also tried to take the piston off but the stupid pin will not come out. There is so much dirt/sand in the bottom end so I took a whole bottle of WD40 and sprayed all over. I was finally about to push the piston down and get the head off. Now how do I get the Piston off without bending the connecting rod? (Yes I did take off the clips). I have never done the bottom end so any help/tips would be great. I rebuilt the top end on this bike and I have only put two hours on it. The only problem is I let the bike sit for 2 days before I was able to get to it. I have split cases before but this was on my street race bikes. Hopefully there is not much difference. I have the engine out and I am currrently rebuilding the carbs. The bottom end still turns freely except the piston does not move freely on the pin. I am hoping to completely remove the piston/pin & the crankshaft as one unit and soak it in something to make it loose enough for me to salvage the crankshaft. Does anyone know if I really have to have the special tools to do this or can I get away with items like steering wheel puller (I have not gotten this far to see if this is even an option), soft hammer, luck...???? BTW this is a 01 YZ250. Thanks [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250 bottom end help needed
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