My daughter was riding the 90 in the snow today and it seemed a little sluggish. A few questions:

What is the stock compression rating?

How are the valves adjusted and what is the spec? I know the plug has to come out of the crankcase and I have to turn the crank until ------ shows. Please fill in the blank. I know it has to be on the compression stroke.

I believe the auto clutch is adjustable. How and what is the spec?

Thanks