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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
how to tell if the crank seal is bad????
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[QUOTE="billtx, post: 846711, member: 37840"] I had a bad crank seal on my YZ125. You may or may not have one. When you do all the other stuff mentioned above, change your tranny oil. Measure what you put in - should be 650CC. And then change it after you ride and measure what you take out. Mine would lose 200-300cc after about 20 minutes or so - way too much. It started running right when the oil level went down and it could not suck it into the crank. Note that this can throw your jetting off also. Unless your bike is modified, verify that it has the stock jetting in it. This would be a good starting point. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
how to tell if the crank seal is bad????
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