so it's an 05 350bruin, it's hard as hell to but, the thing starts but it dosen't want to stay idle after a few minutes of running it. it is piped jetted and cluch kit, it blows black smoke out the exhaust. any ideas?? i'm at a loss ?

 

The black smoke usually comes from too much fuel.My wife has an 05 bruin that is completely stock and starts easy but needs full choke for a few minutes to run even on warm days.Not much help,but just what I've seen from a Bruin.

 

yea its getting way to much fuel somewhere...

 

so you think i should back off the jet screw from the dyno jets specs?

 

does it have a choke? is the choke operating correctly? my 99 Yam Big Bear 359 has a fresh rebuilt carb on it and after i choke it to start it, it will smoke like a train if i dont unchoke it immediately.