Chain sprocket size of yamaha r15

SOURCE: when do i change the chain and sprockets

I found this to be some great instructions on chains and how they work and what to look for........hope this helps you out! Careful out there! Signed: fellow Rider...

http://www.canyonchasers.net/shop/generic/chain.php

SOURCE: gladiator chain problem

I hate to give you the bad news but it is not likely the damaged sprocket is under warranty. The sprocket was not bent when it left the showroom floor and Yamaha Corporation has no control where and how you drive.

Chains should run true and not be forced to move side to side to fit a bent sprocket. The sprockets are hardened steel. It is not a good idea to bend them back and forth.

You didn't say which sprocket had the problem. A front sprocket will cost around $30 and a rear sprocket will cost around $60. Installation will also cost unless you do it yourself.

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SOURCE: Yamaha FZ 400 engine timing

hi,normal way to set up fz is as follows,remove left hand engine cover and you will find cdi picups with a backing plate and interrupter tongue,remove all the spark plugs(dont get the leads mixed up),turn the motor by hand up to top dead centre on no1 piston,the tdc mark the plate will line up with the cdi pickup,no1 piston will now be at tdc,both sets of valves ex and intake should be closed and the tappets slightly rocking,if thay are not and any of the valves on no1 piston are open or tight,look to the end of the camshaft (where the cam fits into the bearing surface)and there will be a horizontal mark on each camshaft,release the cam chain tensioner,slip the camchain off the sprockets and rotate the camshaft untill the marks on the camshaft are exactly parrellel to the rocker box mating surface,fefit the cam chain and check alignment then retension the adjuster and check the marks again,if you have it right the marks should still be exactly parellel with the rocker box and the piston should still be sitting at tdc,if it is out by 1 tooth do it again untill it all three marks are exactly right,failing to do this WILL result in a valve sailing through the top of a piston,then it becomes a bigger job again,after you have got them adjusted correctly ,turn the motor over by hand to check that nothing is binding,if you are satisfied that everything is right,then use the starter and you should have compression,hope this helps

SOURCE: 1979 GS 750 WHAT IS STOCK SPROCKET AND CHAIN SIZES

The stock rear sprocket is 41 tooth. The stock front sprocket is 15 tooth. The stock chain is 630 x 96. You can get OEM parts at www.babbittsonline.com/parts/viewbybrand/parts.aspx

Rear sprocket is $52.91. front sprocket is $21.74 and chain is $201.07
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SOURCE: yamaha r125

Just remove the chain cover then bend the tab on the lockwasher away from the nut so you can then remove the nut. Install the new sprocket and put the assembly back together. Stock gearing is a 13 tooth front sprocket and 48 tooth rear sprocket. The stock chain is 112 links plus master link. The chain is DID 520D 112L. Please rate my answer. Thanks.