Testing

Figure 9-18. Fuel Pump Connector [141]

Figure 9-19. Fuel Pressure Gauge Valves

1/8 in. pipe thread 90° elbow Fuel valve

Schräder valve adapter

Figure 9-20. Schräder Valve Location

Figure 9-21. Fuel Pressure Gauge Installed

Connect fuel pressure gauge to Schräder valve. Reconnect connector [141].

Start and idle engine to pressurize the fuel system. Open the fuel valve to allow the flow of fuel down the hose of the pressure gauge.

Position the clear air bleed tube in a suitable container and open and close the air bleed petcock to purge the gauge and hose of air. Repeat this step several times until only solid fuel (without bubbles) flows from the air bleed tube. Close the petcock.

Open and close throttle to change engine speed. Note the reading of the pressure gauge. Fuel pressure should remain steady at 380-425 kPa (55-62 psi).

Figure 9-21. Fuel Pressure Gauge Installed

11. Turn the engine off. Open the air bleed petcock to relieve the fuel system pressure and purge the pressure gauge of gasoline.

^WARNING

A small amount of gasoline may drain from the quick-connect fitting when the fuel supply line is removed. Thoroughly wipe up any spilt fuel immediately. Dispose of rags in a suitable manner. Gasoline is extremely flammable and highly explosive. Inadequate safety precautions could result in death or serious injury.

12. Remove fuel pressure gauge from the Schräder valve in fuel metering assembly. Install protective cap over Schräder valve.

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DIY Battery Repair

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