Fuel System Maintenance Replace LP Fuel Filter Element Park the lift truck in an authorized refueling area with the forks lowered, parking brake applied and the transmission in Neutral. 1. Close the fuel shutoff valve on the LP-fuel tank. Run the engine until the fuel in the system runs out and the engine stops. 2. Turn off the ignition switch. 3. Scribe a line across the filter housing covers, which will be used for alignment purposes when re-installing the filter cover. FUEL FILTER DISASSEMBLY (Steps 4-7) 4. Remove the cover retaining screws (1). 5. Remove top cover (2), magnet (3), spring (4), and filter element (7) from bottom cover (5). 6. Replace the filter element (7). 7.
Check bottom cover O-ring seal (6) for damage. Replace if necessary. 8. Re-assemble the filter assembly aligning the scribe lines on the top and bottom covers. 9. Install the cover retaining screws, tightening the screws in an opposite sequence across the cover. 10. Open the fuel valve by slowly turning the valve counterclockwise. 11. Crank the engine several revolutions to open the fuel lock-off. DO NOT START THE ENGINE. Turn the ignition key switch to the off position. 12. Check the filter housing, fuel lines and fittings for leaks. Repair as necessary. Testing Fuel Lock-off Operation Start engine. Locate the electrical connector for the fuel lock (A). Disconnect the electrical connector.
The engine should run out of fuel and stop within a short period of time. NOTE The length of time the engine runs on trapped fuel vapor increases with any increase in distance between the fuel lock-off and the pressure regulator /converter. Turn the ignition key switch off and re-connect the fuel lock-off connector. G643(E) Service Manual Chapter 2. Recommended Maintenance 27