RedactedNarrative: According to Operator, he and his cousin, Occupant 1, and a friend, Occupant 2, had borrowed a tiller handle operated vessel from Operator’s dad. Operator stated they had all required equipment as required by law. The two occupants were out in a small canal off of Bayou Felix when they started to experience motor trouble. Operator removed the outboards cowling in an attempt to pull start the outboard motor. The occupants successfully started the outboard and continued along their route leaving the cowling off of the motor. As the vessel traveled along the bayou, the motor struck a submerged object, operator stated a stump, causing the motor to deflect out of the water and the flywheel to pivot into the operators arm, left forearm. With the prop of the outboard out of the water, the engine had minimal load which would allow the engine and flywheel to easily turn high rpms as it struck operator’s left forearm. Operator stated he saw a pork chop, chunk of meat, go flying. Operator stated he stood up causing the engine's kill switch lanyard to pull free from the outboard and turned the motor off. Operator said he had to calm his cousin, Occupant 1, so that Occupant 1 could drive the boat back to the launch. They subjects were wearing PFD and the operator was wearing his kill switch lanyard. Agents do not suspect alcohol and or drugs as a contributing factor.