Metering Rod
- Remove air cleaner, air horn and gasket from carburetor.
- Using a side cutter, remove the tamper proof cup covering the closed valve adjusting screw. Back out adjusting screw until it is clear of the casting.
- Press down on top of pump diaphragm shaft until assembly bottoms. While holding diaphragm assembly in this position, turn rod adjustment screw counterclockwise until metering rod gently bottoms in body casting. See Fig 1 .
- Now turn metering rod adjustment screw clockwise (IN) one turn for final adjustment. Install air horn and new gasket on carburetor.
- Turn adjusting screw clockwise until it contacts the casting, then one additional turn clockwise. Install a new tamper proof cup. Install air cleaner.