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Old 07-09-2013, 04:41 PM
Weekend Warrior
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Join Date: Jul 2013
Posts: 2
Default 1999 Arctic Cat 500 4x4

Took a 500 4x4 on a trade. Has been sitting for some years and carb was quite varnished. Cleaned it up, got wheeler running. Problem I'm having is it won't idle properly and once warmed it won't restart. Puzzled as to why it won't restart after only 5-10mins of running engine. I changed oil(conventional 10w40 just to flush)but not filter. I will be changing oil with ATV 10w40 and filter this evening. Thoughts?
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Old 07-10-2013, 06:30 AM
Jaster94's Avatar
Extreme Pro Rider
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Join Date: Jun 2009
Location: Texas
Posts: 3,159

here's my thoughts:
not idling-you did pull the jet out to clean it, right? see daylight through the orifices and down the center of the pilot jet?
not restarting after warm-have you checked the valve clearances?
does the float bowl have gasoline in it when it dies? just wondering if it is burning all of the fuel in the bowl, dies, and the needle/seat is stuck and won't open up to meet the fuel demand until time has passed and then it has fuel again.
another thought is this: is the fuel tank vented so it won't reach equilibrium and pull a vacuum on it thus stopping the flow of fuel to the carb? just asking cause i'm not real familiar with your quad and i don't know if it has a fuel pump or not. just trying to help.

III John 4
if it's worth doing, it's worth doing right the first time.
never play another man's game, you'll always lose.
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Old 07-10-2013, 06:30 AM

10, 1999, 30, 4x4, 500, 99, arctic, atv, carburetor, cat, clearance, forum, oil, problems, valve

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