Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Air Horn
Remove fuel inlet fitting, gasket and screen. Remove retaining screw and vent valve and shield. Remove pump rod and choke intermediate rod, then remove choke trip lever and fast idle link and lever.
Remove attaching screws, separate air horn from main body, then remove float and needle valve assembly. Disconnect intake needle valve from float. Remove intake needle seat and gasket, and remove filter from needle seat bore. Remove power piston by depressing stem and allowing it to snap free (or hold stem and tap lightly on air horn). Remove pump plunger assembly from pump arm, then loosen setscrew on pump inner arm and remove pump outer lever and shaft. On all Carburetors, take out screw in end of choke shaft and disengage vacuum break lever from shaft (al low lever to hang on diaphragm rod), take out diaphragm mounting screws and remove vacuum break diaphragm assembly. If necessary to replace choke valve or shaft, remove choke valve screws, lift valve out, slide choke shaft from air horn.
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.