I know this is a honda forum but I can’t find ANYTHING online about this atv not even a picture NOTHING!! Ok well my friend has a Craftsman 300 atv (I donno if they are pos good or what ) It's a a/t 2 and 4 wheel drive (you can pick with the flip of a switch) I also think it’s fuel injected from what he was saying. Now it has been acting really funny and they took it to a shop and they can’t figure out wtf deal is with this machine. It only starts if you have you gas all the way down when you start it you can let off when it starts and it will idle fine. MOST of the time when you give it gas it just dies or just about dies. You have to pump the gas to get it to rev up more (and sometimes it works sometimes it just dies) the atv will run fine at 100% throttle for awhile. Sometimes it will bog down and the rpms drop like a rock out of the sky. (it has a digital read out of rpm/mph/temp ect.) Now he told me he has been putting 87octane in that atv. Well it clearly states on the gas cap 90 octane or better. So I put a whole can of sea foam in the tank we ran the piss out of it and it seemed to work ALITTLE better but still giving us the same prob. So my next step was siferning all the old gas out. Put 93octane and ran the piss out of it seemed to run little better but still same prob. I mean the atv is rid able but when you stop and try to go again it starts being dumb. Now I did look at the air filter it's clean but I did notice a SMALL amount of gas right where the filter meets the pipe but not much. Now the only thing I can think of at this point in time is if they were running 87 octane for the last year or so maybe the exhaust has gotten clogged up for all the carbon build up from the engine not burning the 87octane gas efficiently. My friend says that this atv can run 45mph top speed but yesterday I at first I couldn’t get it to run anything faster than 25mph and that was with 2wd not the 4wd if I put it in 4wd then it goes even slower cus of the more stress being put on the engine. But after the sea foam and the new gas it will get up and run close to 35mph now. If you hold steady at 6,000rpms (28-30mph) it will run fine with no prob. but as soon as you push the gas down any further it starts acting like a drunken monkey again. I’m kinda stumped on wtf is going on with this machine. I know a good bit how to troubleshoot most stuff with engines but this thing is pissing me off. Any help guys? I know this isn’t a honda atv but I’m not going to try and find another forum just to ask this question. Hell I can’t even find ANY info on this atv period Iv google the crap out of it Iv been on craftsman’s web site...all dead ends and I know the atv isn’t but maybe 2-3 years old it's fairly new. Well thanx for reading my looooooog @ss post. Thanx in advance!!