Easiest way is to hang the sled and run it. Not sure if it,s an 800 or 1000 but around 6500 to 7000 it should cycle .If i remember correctly. What is the issue? Might be a broken cable or out of adjustment.
its a 07 m6, thre problem is at about half throttle it bogs. thought i fixed the problem because the clutch was sticking. cleaned the clutch and it fixed some of the bog on the bottom end...
When you turn the sled on, the servo motor will turn. See if it does. Have you tried cleaning your valves? Also are you sure you got the clutching done right?
I would check the clutching personally. I never had a mid range bog from a power valve. My mid-range bog was primary clutch. It was all there or a bog.... running the throttle to the bar, releasing and to the bars would help it along but not the right way to run a mountain machine on a trip to the mountains... I got soaked 1000.00 in Fernie for a clutch while on vacation sledding for a week. It kinda ruined my trip because I didn't pay attention to fixing the problem..
I broke a valve cable this past weekend in renshaw it seemed to run fine but had a bad bog around half throttle and very little power changed out the cable and she was good as new.