But, on ADVRider I found a post that explains a method that really makes sense to me. Here's the post:
For adjusting the valves, I found a very simple method that (after getting used to it) means basically ZERO trial and error; I nail it right the first time. It only works if the adjusters haven't been mangled by previous overtorquing.
- take the right feeler gauges out of the fan-pack. Loosen the adjusters and put the feeler gauges under them, with each feeler gauge spanning the two adjusters. This will ensure that the feeler gauge is flat. Lightly tighten the adjusters to hold it in position.
- One at a time, loosen an adjuster and then, holding the shank of the 3mm allen wrench, spin it in your fingers to run each adjuster down against the feeler gauge. Loosen and repeat this several times and you should see the wrench stop in the same position every time. Do this for all four adjusters. Where the adjuster stops is the right position, simple as that.
- keeping the adjuster from moving (takes some getting used to), tighten the locknuts. Then remove the feeler gauges... you should feel even drag from both ends.
That's all. Harder to describe than to perform. Maybe a video would help.
DON'T use a heavy T-handle allen wrench... when you spin it in your fingers the inertia will overtighten the adjuster. The one in the toolkit, or one like it, is perfect.
If the allen wrench isn't stopping consistently, in the same position each time, then this procedure is not for you.
R100PD - XR400R - a few others
Now, what sticks out to me is that 1 feeler is used. It seems that pulling the feeler from the middle would easily show which is tighter and give even feedback when the valve clearance is matched.
What's your take on this?