Clutch goes into any gear with out doing anything

I do not know much if anything about an arctic cat but if you have a shifter you have some kind of a transmission and if you need to get it into gear or neutral but cannot do so without rocking the machine or the shifter back and forth a slipping clutch would not likely have anything to do with the problem. You likely should not be trying to shift gears with the clutch engaged and the clutch normally should be FULLY slipping ie completely disengaged when you are shifting. It sounds like you could have sticking shifter linkage parts, worn shifter parts or internal transmission parts, bent shifter forks, worn shifter cam or drum grooves or shifter fork pins or other worn parts or maybe even low or no transmission fluid.

Eric, how are you confirming whether or not the car goes into gear if you shift gears without the engine running? One way would be to put it in 1st and see if you can push the car. If you can't, it is in gear.

Another option is to roll the car slightly forward or backward (engine off) while trying to put the car in gear. Once it is in gear, then the car shouldn't move any further. However, if it goes into gear, DO NOT start the car without taking it back out of gear.

The clutch is much more likely to be the problem than the transmission.

If the clutch fluid ever ran dry, then the clutch hydraulics will need to be bled of air. Otherwise, the problem could be the clutch master cylinder, slave cylinder or throwout bearing. Since you didn't report the clutch slipping (e.g. engine revving without accelerating when in gear) it is likely not the clutch disks themselves.

Try putting it in to gear with the car switched off if it goes in easy it sounds like you have a clutch fault have you had a new clutch or anything done to it

How do you know it goes into gear if it won't move ?
Can you put it in gear and move the car with the engine off ?

Need to have trans rebuilt or find another in junk yard and replace

if it worked good before the clutch kit was installed , but not after then the clutch installation is incorrect
probably find the the clutch plate has been installed incorrectly
with a correctly fitted clutch kit , there is no necessity to change pedal height or anything else

i would say clutch, if you trun off car and depress clutch and it goes through the gears ok then its the clutch, first thing is than fluid is full in clutch master cylinder,good luck.

Bleeding won't fix it,If it can be put in gear and car doesn't move your clutch is no good.

dont take me up wrong but leave it to a mechanic incase anything goes wrong like gear box falls on you or anything mechanicly goes wrong u'll have no come back on it cause if a garage does somthing wrong or breaks somthing he has to replace it free of charge

The throw out bearing could cause these isues, however I would look else where before doing anything about that. A throw out bearing can be "bad" for a very long time without causing any issues other than annoyance. Is this a cable operated slave cylinder or a hydraulic? If Cable you can adjust the throw of the pedal to take up any slack that will be made from there. Your problem sounds like your not getting enough clutch pedal throw, is there allot of play in the pedal? A simple test you can do is with the car off pointing down hill (key on so steering wheel is unlocked) With the car in gear, depress the clutch pedal slowly untill the car begins to roll. If allot of travel is required then you know that your not getting full use of your clutch pedal. A Broken shift or stretched shift cable could cause this issue as well. I would start simple and work your way up. If a hyd. system it is self adjusting i would check for full fluid in the resevoir as well. Let me know how you make out and we can trouble shoot from there.