Hello, I know Im ahead of myself but I meant to do this earlier.

I live in Fargo ND, the dealer I bought the KFX80 from said they cant be run under 40 degrees. How should I jet this little bugger come this winter - we run if its a sunny day at 20 degrees, he loves playing in the snow with the little quad.

Speaking to the dealer there isnt a cold weather chart or anything for jets and I dont want to burn it up come this winter when I give him more throttle opportunity.

Thanks
Rob

 

Your dealer is goofy.
The stock jetting is good from cold to hot, sea level to mountains. It's jetted way fat in stock form.

 

They were adament that below 40F it will melt. When my jets got gummed up I thought for sure it was melted per them. Just needed a replacement main/pilot as mine had some varnish. Runs great now. Just wanted to get this squared away before winter again.

I was pretty disappointed to hear him say you cant run these less then 40F as we run as much or more in winter playing in snow with the quads.

When I first got it I bumped the circlip on the needle jet down a notch (richer), pulled the carb restrictor and exhaust restrictor. The plug looks good.

FWIW I run Amsoil synthetic Interceptor as it doesnt stink as much as Kawie oil and seems to flow better. I still let the quad do the injection, nothing is modified.

Im about 980' sea level. So he can run the little bugger from 110F through -20F and not be concerned about re-jetting? Thats good to hear.

 

The injection is the only weak point IMO. If it'd get too thick to pump it'd be a problem.
To make sure all is well, maybe pull the plug after running it in the cold and see what it looks like.
I'm still betting all will be fine.