Polaris ATV Legend
Join Date: Feb 2009
Location: Washington State
You may just start by running some seafoam mixed in with the gas, and try to stumble through an entire tank of treated gas (maybe more, maybe less) that way. A couple weeks is long enough for untreated gas to start to turn into gel inside some parts of the carb, such as the jet passageways. The smaller the amount of fuel (i.e. jets, bowl, etc), the faster it goes bad. That is if you didnt treat the gas with a stabilizer before that. I would also check the airbox to make sure the airfilter is somewhat clean, and there is no debris or anything inside restricting air flow. Airboxs are a prime choice for rodents to make nests in, just another thought.
It is something simple, cheap, and easy to do, and may be all that the machine needs.
I am unfamiliar with oil in the airbox issues on these machines. I will have to do some looking into on that part.