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power valve adjustment

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power valve adjustment

Postby 2001xcr440 » November 28th, 2001, 8:43 am

Which way (counter clockwise or clockwise) do I turn the power valve screws to make it kick in sooner? Mine is actually a 1999 XCR 440 RACER..but name was already taken'. Thanks!
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power valve adjustment

Postby Nunavut » November 28th, 2001, 9:58 am

if you turn the screw counterclockwise(loosen), there is less pressure on the spring inside the valve, they will open sooner.

Just remmeber, adjust each one equally, otherwise you could be in trouble.
Second Place is just a nice way of saying you are the first loser
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power valve adjustment

Postby 2001xcr440 » November 29th, 2001, 2:06 am

Cool..thanks alot! :0)
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power valve adjustment

Postby XcYZ » November 30th, 2001, 1:17 am

Why would you want them to kick in sooner?
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power valve adjustment

Postby swissbliss » December 1st, 2001, 12:57 am

THERE IS NO NEED TO MESS WITH THE POWER VALVES,IF YOU WANT IT TO KICK IN SOONER THEN DO SOME CLUTCH WORK TO IT!
jamie stancil
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power valve adjustment

Postby XcYZ » December 4th, 2001, 1:11 am

Exactly... If the valves open too soon, the motor will fall flat on its face.
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power valve adjustment

Postby 2001xcr440 » December 4th, 2001, 4:01 pm

OK, here's my dilema and this is why I am asking:
It was raced the past 2 years and this year I want to use it for the occassional radar run and mostly trails. I don't want to race it any more than that. I don't think my power valves are adjusted right to begin with. When I have the needle slot 3-the motor bogs down like it's getting too much gas and the power valves won't kick in. When the needle is on slot 2, the power valves kick in but it seems like its running out of gas at the higher RPM's. I've checked the vent lines, made sure the power valves were clean, checked the tank vent, replaced the spark plugs, checked the carb vents, cleaned the carbs including the jets and can't figure it out. That's why I'm thinking the power valves were adjusted wrong at some point before I got the sled. I was hoping that someone might know from experience that's why I chose the racing board being it was raced for 2 seasons. As far as asking service from Polaris, I am getting nowhere! I was told to change the needles (did) told to make sure I have a 12 belt and not a 12 1/2 like polaris origionally said to have on it (I did) and was told to change my jets and $500 worth of other parts which also got me know where except lower in the checkbook. It's getting me to the point I just want to say s*rew it and sell.
Now, anyone have any suggestions?
1999 XCR 440 Edge
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