Kodiak 400 cold weather problem

[BCNemo]

I have a 2001 Yamaha Kodiak 400 (YFM400FWAN©) On a recent hunting trip a problem popped up and I hope someone else has experienced this, so that I can learn from them instead of going on my own hunt for an answer.

The Problem:

On cold days (sub 25 degree) I choke the Kodiak and it starts instantly. It revs up and runs on "high idle" without any problem. However when I return the choke lever to its "normal" position the ATV continues to run and a very high idle. I cant put it into gear until the idle comes down, which it doesn't. In order to use the bike I have to shut it off and when I restart it I must place it into gear before the engine gets a chance to rev up. It then returns to a normal idle and the machine behaves normally. This only happens on real cold days but it is a problem I want to fix. Can anyone offer some help?

[mjnayr]

I have the same problem, did you ever fix it?

[Gwbarm]

Cold air is thicker than hot air, so it takes a little longer for things to work properly. The fix would be to adjust the carb mixture for colder air. I dont think there is a problem it is just factory set for a certain temp range. 

[Mech]

If it's a cable operated choke I'd check the plunger is going right back in..

[Gwbarm]

Good thought, clutch plunger could be sluggish when its that cold.

[Mech]

Yeah that's what I was thinking. Aluminium expands at three times the rate of steel when it's heated.