Idle runs but not more - Arctic Cat 2013 90 2x4

The idle adjustment screw on the carburetor usually has a spring on the shaft. Turn it counterclockwise to lower the idle speed. It probably won't shift because the gears are turning too fast...assuming that it's an automatic.

Sounds like your idle/slow speed carb circuit is plugged. A carb cleaning and spraying all passageways with aerosol carb cleaner should find your lost idle

fast idle start usually indicates an air leak somewhere.check carburettor bolts are tight and engine head bolts are tight.try that first

If a tune up doesn't help, rebuild the carb. the ethanol in gas ruins the gaskets.

1. Check the INTAKE valve clearance!!!!
2. Check for an air leak
3. Install a new spark plug and air filter!!
4. Check the compression..
5. Have the carb professionally cleaned and set!!
>> Once you have sone all these steps.. repost to me if this did not fix it!!

its running lean. not sure if thats a carb or fuel injection. you need to richen the idle somehow.

replace the $5.00 idle jet with a new one (don't try to clean) & make sure the idle mixture screw is 3 turns out from seated (don't over tighten or will break off tip in Carb

Hi,

You adjust the idle screw on the carburetor, to do this you will need to run the ATV, rev it and tweak the idle and throttle screws accordingly. Between revs you will need to adjust the idle screw and the throttle screw if needed.

Replace idle jet with a new one OEM is $5.00. If won't idle still the compression is so low that it won't stay running Or possibly the main seals are leaking (a 2 stroke has top end & bottom end compression.)

John replace the idle jet $5.00 at a Yam. dealer (don't try to clean it ) & make sure that the idle mixture brass screw on the bottom of the carb is set 3 1/2 turns out from lightly seated. (don't break the tip off)