01 WR with 03 yz decomp cam valve check procedure?
Posted April 14, 2012 - 12:15 PM
Is there a different procedure for the valves on 03 cam equipped bikes? Or if the bike has the YZ degree timing? Thanks.
Posted April 15, 2012 - 03:38 PM
Posted April 16, 2012 - 10:23 AM
The aftermarket does make Auto Decompression cams for the 400/426 that do line up correctly, having been actually made for the application. Be sure it's not one of those. Contact the OP for verification that he used an OEM cam, and/or look the cam over for markings indicating it came Hot Cams or someone else. If there are no id markings on the cam itself it's probably a Yamaha part. In that case, follow the procedures outlined in these two posts:
Posted April 19, 2012 - 09:23 PM
Those timing marks are not always perfectly lined up from the factory. Are they at least close? With them close to parallel with the head surface, you should have another timing dot on each cam near the very top on each cam. From each one of these dots, I count how many cam chain "pins" are between each dot. Going off of memory (sometimes very suspect!) I believe you should have something like 13 pins between these two dots. Let us know what you've got. Maniac
13 pins between the dots is what I have.
Posted April 20, 2012 - 03:24 AM