I NEED TO KNOW HOW TO TAKE THE POWER VALVES COMPLETELY OUT OF THE CYLINDERS. I GOT THE COVERS OFF AND THE STAR BOLTS INSIDE. IM NOT SURE WHAT THEY DID BUT IT LOOKED LIKE THEY WERE HOLDING ON A COVER THAT KEPT THE VALVE IN. I HAVE A PARTS DISCRIPTION SHEET AND IT'S NOT WORKING. I NEED TO KNOW BY LIKE....TONIGHT

Those star bolt you took out hold a plate down on to the cylinders. If you took the bolts out pull the plate back and the valves will slide out. They may be stuck, depending when the last cleaning was. If they're stuck in spray a little WD-40 to loosen up the carbon, take the powervalve cables off and pull them out with some vise grips

okay, i took them all apart. cleaned them the best i could. and i scraped off a thick coat of carbon at the end of the valve. now the sled only hits about 7300-7500 top rpm. before it would hit 8300ish. what did i do wrong? or do they just need to be adjusted closer to the piston because of all the shit i took off from th ends?

did you install them upside down? the right way is with the big bevel goes down on the bottom also did you check the cable length????

they are right side up. but i dont know how to accuratly check the cable length. i need some advice.

600 motor is from 32.1 mm to 34.1 mm. I just cleaned mine but have not had a chance to test it yet. I had to put a new cable on and set mine to just under 33mm. Pretty simple job once you do it a couple of times. Make sure you have your cables hooked up correctly as that could be causing your rpm problems.

measure between the outer case of the cable to the inside of the metal end of the cable itself. This will give you how much cable you would be able to pull up on. Hope you understand what I am trying to say. here,

http://snowmobile.off-road.com/snowmobile/...0&id=195515

X2

how do u adjust them on an 800? We are trying to adjust them, but it feels like the sled is blown up. Compression is 125 in each cylinder.. Not sure what to do here.

thanks alot. haven't taken them back apart yet but i will tommarrow, maybe.

Get a manual, it will explain everything and even has pictures.

also makesure the cable ends on the servo go up in the bracket( the underside ) they fit in like on your mountian bike brakes

i have the manual....somewheres around here.... thanks alot guys.

8300 rpms for that twin sound high.

8300 rpm with a longer primary clutch spring that engages at 4400.

Actually dyno's I have seen put the best power around 8150 8200 rpm (113 hp out of an old snotech mag)

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clutches are fine springs aren't broke. haven't adjusted or checked my powervalves yet. could it possibly be my rings causing compression to decrease??? just a thought.6,3xx miles -motor untouched. not looking forward to taking off the cylinders in the middle of winter but i would have to get it done.

advice??????