6 © 2002 6.2 Fuel System Service and Maintenance run empty, the fuel system must be vented. т Bring engine regulator into stop position. т Position fuel collection container beneath filter housing 9 / pressure maintenance valve 9. т Open fuel shut-off valve, pressure maintenance valve 9, vent screw 10. т Vent system, turn over engine with the starter (max. 20 sec.) up to vent screw 10 and pressure retention valve 9. т Firmly tighten vent screw 10 (tightening torque 25 -5 Nm) and pressure maintenance valve 9. т Bring engine regulator into start position and start. т Check for leaks after starting the engine. Keep naked flames away when working on the fuel system. Do not smoke!
Dispose of wastefuel in an environmentally-friendly manner! © 36 649 0 © 30 084 0 т Tighten the drain screw 7+9 т Open fuel shut-off valve. т Bleed system т Check for leaks after starting the engine. 6.2.5 Clean/Replace Fuel Pre-Filter, Filter Element Clean/Replace: т Close the fuel shut-off valve. т Place fuel collection container beneath the fuel pre-filter. т Loosen the drain screw 7+9 and drain fuel. т Turn the filter element housing 4 with gasket 3 and filter element 3 anti-clockwise and remove. т Clean any dirt from the sealing face of the filter carrier and filter element housing 4 and sludge chamber 4 and filter element (replace if necessary). т Insert new round sealing rings 2+3+6.
т Screw in filter element housing 4 and filter element (max. torque 25 Nm). © 36 649 0 © 36 649 0