Carburetor repair. Tune up. There are 3 bolts holding the engine cover with pull start. I only show 2 being removed. Replace the “O” ring on the carb intake that goes on the intake tube. Torque the head bolts. Sometimes the model number is on a different location on the engine cover. its there somewhere.. Make sure to clean the inside of the gas tank. The cover with pull start is 2 piece, one piece is the spacer for the carb/ governor linkage cover.