If I bump the electric choke two to three times just before moving the throttle up, the engine will catch and accelerate fully. Almost everything was gone over by a dealer. The tank and gas line replaced, the carb cleaned (but not disassembled); now I'm being told by another dealer that there is too much air being allowed in, and that I should try adjusting the choke. It is an injector type choke and I don't know if it is adjustable. The butterfly is closed when engine is cold; seems to me that it should be more horrizontal?!