Get an ATV Out of the Snow

It's always fun to ride ATVs in the snow, but it's not fun getting stuck. Getting unstuck can be as easy as getting stuck too.

Steps

Assess how deep the snow is. If the tires are spinning then try to dig out the undercarriage so the weight will be put on the wheels, you can usually rock side to side to get out.
Accelerate away from deeper snow. Depending on how you got stuck, accelerating backward may be necessary remember not to accelerate too fast.this can cause the tires to just dig into the snow making the situation worse.
Move your body to the opposite end that you are going. the direction you're accelerating. This can help you get out especially if in 4x4; also, you shouldn't be gunning the throttle.
accelerate slowly as you start moving. best way to get unstuck is to use a winch or have someone else pull you out with an A while accelerating toward them.

If you have a winch, just attach it to a tree and pull the ATV free
If the ATV is stuck too deep what is going to happen is all four wheels will just spin because they won't be touching solid ground. If this happens then your ATV is being supported by snow underneath it. Get a shovel and excavate around it and underneath it, use the shovel and push it underneath it and pull the snow out. After a while you will take out a shovel full and the whole machine will drop down {{safesubst:#invoke:convert|convert}} or so... when it does this you should have traction.
A 4 wheel drive ATV will get unstuck more easily