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2005 Yamaha Bruin 350 Remove Timing Chain

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  • 2 weeks later...

Proabably too little, too late, but, the first thing you need to do is remove the valve cover. This will likely involve removing the tank as well. Next, on the upper, rear facing surface of the cylinder there will be a small fitting with smaller screws at the top and bottom, in the middle, there will be a slightly larger one. This is the actuall timing chain adjustment screw. Back that off untill there is some slack in the chain at the top by the cam. If the chain does not loosen up by backing that screw out, then start loosening the screws above and below that hold the fitting itself on. Once you have the tension off of the chain, you can unbolt the camshaft sprocket from the cam. Make sure to mark the chain and sprockets with something that won't smear off. If there are marks on the chain and sprockets, then it won't be necessary to mark them yourself. Then you will need to remove the left hand side cover, remove the flyweel and stator, and at that point you should be able to work the chain around the output shaft of the crankshaft. I am sure there are alot of other little things I did not mention. If you have a good mechanical inclination, you should be able to figure it out. If you aren't so good with a wrench, I would atleast buy a repair manual to help guide you throught he steps.

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