Cleaning Power Valves - - Arctic Cat Forum

XFR/Firecat/Sabercat Regular 128" XF / Firecat/Sabercat chassis

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post #1 of 6 Old 03-22-2006, 06:52 AM Thread Starter
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Sled: 2005 Sabercat 600 efi Lx
07-08 Mileage: 1,400
06-07 Mileage: 1,200
ATV: 2008 Polaris Sportsman 500 efi
I have a new 05 SC 600efi Lx and I put 1,600 miles on it. Since I'm not very tech savy can anyone give me a clue on how hard it is to clean the valves?
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post #2 of 6 Old 03-22-2006, 07:01 AM
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Take off two bolts holding them onto the motor, unhook them from the servo motor (cables), pull one out, clean it, put it back in. If you need a reference as to which way they go back in (angle matters), use the other one, unbolt it, and slide it out, to confirm, put the clean one in, repeat process for dirty one.

To clean:

Spray Carb Cleaner / Brake Cleaner on them, use a wire brush to scrub off the hard carbon, and a lot of rags to wipe off the grime.... took me about an hour or so to do mine, and I didn't do them last spring (two years, but only 800 miles total).
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post #3 of 6 Old 03-22-2006, 08:17 AM
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Sled: 07 XFIRE 1000SP
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I would suggest doing a search on "Power Valves". There are many post topics about this and has been covered in great detail. It seems that half of us (including myself) seem to get confused on the proper way to reinstall them.
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post #4 of 6 Old 03-22-2006, 08:53 AM
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Sled: 2012 Polaris Switchback 800 Pro-R
10-11 Mileage: 1400+
09-10 Mileage: 1613
08-09 Mileage: 1226
07-08 Mileage: 846
06-07 Mileage: 1139
ATV: No ATV (yet)
If you have access to SnowTech, they had an excellent write-up in their December issue (that's why I recommend SnowTech to any die-hard sledder ... it's a great mag).

Anyway, here's the basics of cleaning the APV's:

Pull the exhaust pipe before doing any of this, as it makes for easier access to everything.

1) Take the cover off your servo motor (it's located on the left side of your sled - if you're looking at is as you sit on the machine). The servo motor should have a clear cover.

2) Pull the retaining clip on the bottom of the motor to free up cables.

3) Turn servo motor a quarter turn (counter clockwise) to free up cables.

4) Remove one cable.

5) Determine which APV the cable goes to, and take the bolts out of that valve ... mark it somehow to make sure you put the cable back into the proper slot in the servo housing.

6) Pull valve and make note of the valve position - it needs to go back in the same way, and it is important. If you forget, use the other valve as a reference when you pull it and clean it.

7) Using brake cleaner and a scotch bright pad, get to work.

8) Insert the valve, and then pull the other valve, and clean it.

9) Insert the second valve, and then just reverse order to put everything back together.

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1981 John Deere Trailfire
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1995 EXT 580
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2000 ZR500 EFI
2003 F7 Standard
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post #5 of 6 Old 03-23-2006, 12:40 PM
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post #6 of 6 Old 03-24-2006, 05:36 AM
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Its pretty easy, just pay attention to witch way they come out. I believe there is a section in your owners manual. Good luck.

Cat Sratch Fever.
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