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Discussion Starter #1
On the Trx450er the weight for the decompression system is in the way so you can not use a cam sprocket holding tool. My Clymer manual says to use a flywheel holding tool but I remember reading about putting the quad in gear, holding the brake, and using an Allen key to hold the crankshaft so I can break the cam sprocket bolts loose. This sounds good to me but I don’t want to strip the crankshaft where the Allen key fits in to turn it over. You guys ever do it this way? Will the Allen key strip the crank?
 

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take off the inspection cover for the crank on the left side of the motor and using a socket and ratchet hold it there. that allen key hole is for a cover for the crank. nothing more
 

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Discussion Starter #3
The inspection cover for the crank is on the right hand side of the quad to the right of the clutch cover...It is a 10mm hex for the cover and there is a 8mm hex behind the cover on the primary drive gear mounting bolt used to turn the crankshaft over..... I remember hearing people hold the crankshaft in place by holding on it with a hex while they break the cam sprocket bolts loose. I want to know if the primary drive gear mounting bolt will strip or loosen up.
 

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It torques way way higher than the cam sprocket so it should not loosen. I have done it this way many times. If you have a small impact or cordless impact you can probably zip them off with it without having to hold the motor.
 
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