I have a power torque Victa. I was using it and all of a sudden, the engine stoped. I had no spark. I changed the coil and the ignition module. whilst I was doing all this, I rebuilt the decompressor and cleaned out the carburettor and changed the starter o seal. I now start it and smoke comes out from the decompressor as it starts.

It retracts as go to start it and almost breaks my fingers and cannot start it.