Hi,
I have a tunnel hull with the K&B 3.5cc outboard engine (model # 8907) with a black carb (came with it when it was new.
I never had much luck getting it to stay running.
Everytime I put the boat in the water and it'd run great and fine for at least a few mins or so then it'd sputter and stop (about 3-5 seconds of sputtering) and most of the time it happened in the middle of the lake.
Everytime I retrived it and checked the fuel level, it's always between 1/2 and 3/4ths of a tank.
I even ran it in a water tank without any problems from full tank to empty under load, under various needle settings.
Even switched from CP 30% to 75%, tried small straw tubes in the water inlet thinking it may be overcooling the enigne...nothing helps.
Does anyone know what could be wrong with it?