I have a 2005 sportsman 400 that has increasingly gotten harder to start since new. While I haven't used it much, only 25 hours (been out of the country a lot), it was difficult shortly after initial purchase. At first only when cold. Then difficult at 30 degrees. last year at 50, now at 60 degrees. Once it starts it will start all day, even after sitting for 3-4 hours. That first start after sitting for a month is HELL!! I don't think it's the gas, as I said, once it starts it's OK for the rest of the day.

My process:
turn on the gas (very important)
pull out the choke
crank, 5-10 seconds
short firing, 3 second, die
crank for ever, nothing
wait 10 minutes
repeat.

If nothing happens, pull plug, if wet (50%) dry and replace

What up?
I'm starting to dislike this ATV

Thank you.
Nic