Artic cat 2007 400 will not change from 2 wheel to 4 wheel

no info generic answer no yr or model on most atv -under seat right corner of air box by frame can also access thru rear wheel opening https://www.motorcyclemanuals.info/motocycles-atvs/arctic-cat/ https://support.countrycat.com/ fill in your info for free repair manuals

follow the wires

Maybe this info can help service info for Arctic Cat 300 Utility Service Manual: Drive Chain
https://www.manualslib.com/manual/855261/Arctic-Cat-300-Utility.html?page=15

Have you checked to see if the fuel line is plugged? It sounds like something is stopping the fuel flow to the carb.

From what I understand it is stamped on the left side of the cylinder head, behind a hose.

If this does not help, contact artic cat dealer and speak to a service rep.
Hope this helps!

Here are the service manuals for all Arctic cat ATVs
Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

1600ml is the Arctic Cat recommended amount BUT if you check the KYMCO manual (the '06 250 is a kymco made for AC) it says the capacity is 1600ml but when you change oil it is 1400ml. This might explain why my oil level always seems higher than it should be. You can check the level with the site glass on the side.

Also on the 250, you also have to change transmission fluid separately. It uses the gear oil NOT engine oil.

Here are the service manuals to all Arctic Cat ATVs

Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

I had this problem with Artic Cat 500 and after ensuring the electric shift was working I discovered the mounts for the front drive shaft had broken and would not allow the shaft to engage. I suspect mine was caused by plowing but any number of things could break or bend these.

My artic cat 90 4 wheeler eletric start wont engage???Has new battery and NOTHING????