1. Turn off fuel (petcock at the gas tank)

2. Disconnect battery ground cable

3. Remove air cleaner cover, air filter and air cleaner backing plate.

4. Remove float bowl drain plug at the bottom of the carburetor, drain gasoline into a container and dispose of properly. Power Tube

5. Remove the main jet from main discharge tube.

6. Insert the Power Tube (Fig. 1)

7. Screw the main jet back into the main discharge tube and screw in the float bowl drain plug.

8. Reconnect battery ground cable.

9. Carburetor jetting and accelerator pump may need to be re-jetted and readjusted depending on application.