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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Rebuild bottom end?
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[QUOTE="skiboyracing, post: 1022418, member: 66492"] I just split my 250. I bought a clymer manual and although I haven't gotten all the parts to put it back together, it's been pretty easy. No special tools. I used a 2 jaw puller to yank the flywheel off, I bought two 3.25" bolts that thread into the stator bolt holes and used my 18 dollar harmonic balancer puller to split the case. I did take it to a local shop and paid 3 dollars to press the right side of the crank shaft out of the case though. Then for the bearings I sat the case in front of the salamander and heated it up. Most the bearings fell right out, I had to wack the mains a couple times but no big deal. The shift drum bearing I went to autozone and used their blind bearing puller for that one. That was free. So you can see with a manual and some cheap tools it's not hard or expensive. For putting it back together I went to a local shop where they let me use the lathe and made two aluminum slugs that fit into the middle of the crank bearings. I will install them and heat the bearings through the slugs and freeze the crank and I hope the crank and two halves slide right together. Read the manual and search this board. That is all I did and so far I'm not only surprized at how smooth it's going, but am having fun doing it as well. It will be a great learning experience for you and your son. Wish my son was old enough to help out and learn. Oh and don't look at the schematics and get scared. It's not that bad. The transmission gears all come out as an assembly. There is more to take off on the outside of the case than there is once you split it. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Rebuild bottom end?
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