Posted October 03, 2003 - 11:17 AM
Posted October 03, 2003 - 12:47 PM
The manual gives a pretty good description of this process. Also look at Motomans site and read up on YZ timing, the process is similar. The valve schimms will cost about 5.00 each. If they are out of spec. its very possible that you will be able to move them around to other valves and end up only needing 2 or 3 new ones. New schimms come in increments of .05 so you won't hit your ideal clearance on the button. You will need a torque wrench, and one of those extension magnets. The cams need to come out. Very important to measure the clearances before removing them, draw a diagram of the 5 valves and write down clearances. When removing the cups and schimms, do it one at a time, write down the schimm size and place them on a piece of paper in the same pattern as in the motor. Take great care not to mix anything up. The process is not bad at all, just take your time so things don't get mixed.
Read the manual, read Motomans YZ timing, the process as well as things to watch for are there. First time will probably take about 3 hours.
You also will need a very small flat screwdriver when reinstalling the cam chain tensioner, I used an optical screwdriver. A 1/4 inch drive torque wrench is great for this and you will need a short 8mm socket. Take your time and all should go well.
Hope your dealer stocks schimms.
Posted October 03, 2003 - 05:16 PM