i have a 04 sportsman 400 it has low miles and has a problem with hills. Its missing, kinda like when you go in reverse and have to push in the little yellow button to get more rpm and power in reverse.....well my machine bogs out just like that....only on hills.
on flat ground its great..get it going up a hill and its missing just like that little reverse button needs to be pressed...any takers?
check spark plug wire ours did the same only on hills about a month later died on straight away it was the plug wire getting bad polaris had a issue with that year and model our never did it again. Hope this helps
Sounds like a lean condition, I had a similar problem with my 04.5 500and I raised the needle in the carb one notch and also increased the jet size. Also check your float level.
2004 sportsman 400 missing only on hills
400 running rough
