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  #1  
Old 05-17-2008, 11:45 PM
Weekend Warrior
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Join Date: May 2008
Posts: 2
Default Just bought a 1998 Arctic 500 4x4.

Just got the thing today for 500 dollars, and I have no idea how to adjust the valves or timing chain. This makes my second one, but the first one is such a good wheeler I have no experience fixing it.

Any help on how to adjust the valves and timing chain would be greatly appreciated.
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  #2  
Old 05-18-2008, 07:09 AM
Pro Rider
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Default Just bought a 1998 Arctic 500 4x4.

You just need to get to the valve cover on top of the head. Take the access caps off, or the valve cover, to get to the rockers. I'm not sure on that bike what you should set them at though. The chain is self adjusted. There is a tensioner on it that keeps the proper tension so you don't have to worry about that.
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  #3  
Old 05-18-2008, 10:14 AM
Weekend Warrior
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Default Just bought a 1998 Arctic 500 4x4.

Thanks man.
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  #4  
Old 05-18-2008, 10:26 AM
Pro Rider
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Default Just bought a 1998 Arctic 500 4x4.

Anytime.
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  #5  
Old 05-21-2008, 09:12 PM
Range Rover
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Join Date: Nov 1999
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Default Just bought a 1998 Arctic 500 4x4.

Keep an eye on ebay, you can usually pick up a factory service manual for under $20 there. It doesn't have to be a 1998, the 99's, 2000's and even newer are basically the same machine. I'm not sure what year the cut off is but you get the idea.

John
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  #6  
Old 05-21-2008, 10:44 PM
Weekend Warrior
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Join Date: May 2003
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Default Just bought a 1998 Arctic 500 4x4.

According to my 99 500 4x4 manual.

Adjust valve/tappet clearance using the following procedure.
a. Turn the engine over until the piston reaches top dead center of the compression stroke.

b. Insert a feeler gauge between the tappet and valve until slight friction is felt when sliding the feeler gauge back and forth.

c. If clearance is not within specs, loosen the jam nut and rotate the tappet adjuster screw until the clearance is within specs.

d. tighten securely - recheck

CAUTION - THE FEELER GAUGE MUST BE POSITIONED AT THE SAME ANGLE AS THE VALVE AND VALVE ADJUSTER FOR ACCURATE MEASUREMENT OF CLEARANCE. FAILURE TO MEASURE ACCURATELY WILL TURN YOUR ATV INTO AN UNUSABLE POS.

Valve tappet clearance - cold engine
Intake .05-.10 mm .002-.004 inch
Exhaust .17-.22 mm .007-.009 inch
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Old 05-21-2008, 10:44 PM
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Tags
1998, 4x4, 500, adjusting, arctic, artic, atv, cat, chain, manual, owners, replacement, review, set, timing



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