hi! i have a 25cc homelite, all stock.i put it in an airboat. i have test fired it and noticed that everytime i pass the half throttle mark, the engine kind of bogged down or losing power and eventually died. at half throttle it was doing ok, lots of power. what causes this problem? i have taken this from a blower, and i have already noticed this when it was still in the blower although it doesnt really quit then, just lost power and rpm.
i am using an apc 15x13 prop on this.
thanks a lot