Hello,
I'm pretty new to ATVs, but I've got an 03 600. The other day we were out riding in some mud and a little bit of water. I have had virtually no trouble with this machine that I haven't caused myself. It ran great all day and then all of the sudden I couldn't get over 30mph. If I hit the throttle hard it would sputter and choke with a little backfiring. If I slowly eased into the throttle I could maybe get to 30. Low range and reverse seem to work better than High. I checked my filter, its OK, and the reverse override doesn't seem to be causing any problems. If I move the choke **** while driving it seems to run a little better. Any suggestions?

 

Any chance you got water into your air box and engine? Maybe the carb vent line is blocked? And you could have sucked some debris in the carburetor and blocked your main jet or needle jet. Check those and let us know what you find.

 

I'll check it out, I'm a little hesitant to tear into the carb, but I'll see what I can do.
Thanks

 

Save the carburetor for last then. It really is not hard at all to get into. If you want to do it, let me know, and I can try to outline what to do.

 

well if u really dont mind telling us i would like to know thanks

 

Do you need help with getting to the carburetor? Or do you need help with getting the carburetor apart once you are there?

 

i can get it out im just a little hesitant to take it apart thats what i need help with

thanks

 

it souds like somthing got into the vent tube. After you clean it try putting a small plastic fuel filter on the end and tuck it back under the tank. This will prevent any reoccurence.

 

check plugs and plug wires

 

Once you gain access to the carb (after the seat is off, take both side panels off to help), take the 4 phillips screws off the bottom... these hold the float bowl in place. After the screws come out the bowl will lower down. There will be some gas left in there so becareful when lowering it - you may spill some. Now, when looking straight up into the carb, you will see 2 small brass 'jets'. I have not taken these apart yet, but one will probalby require an 8mm socket (or wrench) to unthread and the other will probably need a flat blade. Unscrew each of these and inspect them. There may be a drop og gas left in them, so you can blow on them and get that out. There should be a perfectly clear hole going all the way thru the jet. The diamter of the hole will probably be less than that of a sewing needle. But you want to make sure bothe of these jets are open and not blocked with debris. If there is debris in there, you can try an air compressor to blow it out, use a single strand of copper wire or soak it in carb cleaner. Make sure you put the float bowl back on carefully and dont hit or bend the float arms.