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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Changing crank bearing?
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[QUOTE="Rick G., post: 692000, member: 32624"] I'm restoring that same bike right now. It's pretty easy. Get yourself the Clymer manual which is titled "YZ100-490 Monoshock, 1976-1984. You have to completely disassemble the motor and transmission. Basically you pull the motor out of the frame, pull the top end, pull the flywheel (you need a special tool), then turn it over and pull the clutch, shifter, primary drive gear etc. The case halves come apart without any special tools. Then knock out the old bearings and seals with a bearing driver (cheap at Harbor Freight) and replace. You might as well change all of the bearings and do the crank/connecting rod while youre in there. You will need the manual and a good torque wrench to get it back together. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Changing crank bearing?
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