Before I go and rip the carb out of the machine, I wanted to find out if some of you have fixed this just by playing with the air/fuel screw or did you replace pilot jets... if you replaced the pilot jets, what size did you go with?

Now that it is getting into the 30's here it's doing horrible bogging just out of idle when taking off (after warmed up). It is a new 2004.5 Sportsman 600 with 12 or so miles on it.

Thanks
Buddy P

 

Hey Buddy,
On my 600, last winter, I had a problem with my 600 cutting off at idle and backfiring when lifting off throttle at speed and slowing down. I fixed both easily. For the cutting off problem, there are two ways to fix this, I removed the cover off of the throttle box, on the right handlebar. There are contact points in there for safety (stuck throttle or something). If they are touching at idle, it most likely will cut off. I put a little sleeve over the throttle stop and it allowed a small space between the contacts at idle, problem fixed in 5 minutes. The other way is to pull the throttle cable sleeve and adjust the throttle cable itself. Both so the trick.

As for the backfiring, not sure if you have this problem or not, but when I installed a K&N filter, I increased my main jet from 155 to 160. That took care of that problem too. $5 and 30 minutes or so. [img]i/expressions/face-icon-small-smile.gif[/img]

As far as stumbling off idle, mine will do that now a little, unless I let it warm up really good, like 5-10 minutes. But once it warms up really good, it's very snappy and responsive. Remember, these things are very cold natured, so the longer it warms up, the better. [img]i/expressions/face-icon-small-smile.gif[/img]

Good luck,

Sp600towtruck