Change Fuel Filters; Spark Arrester Cleaning Instructions; Glow Plugs - JLG 600SC Service And Maintenance Manual

7. Hand-tighten filter another half-turn.
8. Check oil level.
9. Check oil pressure.
10. Check oil filter cartridge for leaks.

Change Fuel Filters

FUEL IS FLAMMABLE AND CAN CAUSE DEATH OR SERIOUS INJURY. MAKE SURE
NO OPEN FLAMES OR SPARKS ARE IN THE AREA WHEN WORKING ON FUEL
SYSTEM. DO NOT SMOKE WHEN WORKING ON FUEL SYSTEM.
1. Wipe area around filter to clean any dirt from area.
2. Disconnect water sensor connector (Pre-filter Only).
3. Remove fuel filter cartridge. Catch any escaping fuel.
4. Clean dirt from filter carrier sealing surface.
5. Apply light film of oil or diesel fuel to rubber gasket of
new filter cartridge.
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SECTION 3 - CHASSIS & TURNTABLE
6. Screw in new filter by hand until gasket is flush. Hand-
tighten filter another half-turn.
7. Connect water sensor connector (Pre-filter Only).
8. Open fuel shut-off valve.
9. Check for leaks.

Spark Arrester Cleaning Instructions

1. Remove cleanout plug in bottom of spark arrester (muf-
fler).
2. Without causing deformation (or any type of damage to
spark arrester) repeatedly tap on arrester near cleanout
plug. This may be enough to begin spark trap drainage.
3. An industrial vacuum cleaner can do a complete job at
this point.
a. Or, IN A SAFE AREA, start engine. Alternate between
low idle and high idle for two to three minutes.
b. Or, operate engine as required by application for
two to three minutes.
4. Install cleanout plug.

Glow Plugs

If glow plug option is enabled in the JLG Control System, glow
plug and indicator lamp will be energized when Power/Emer-
gency Stop switch is pulled on if ambient air temperature is
less than 50° F (10° C) and engine coolant temperature is less
than 140° F (60° C).
This determination occurs one second after the Power/Emer-
gency Stop switch has been pulled on. Lamp and glow plugs
remain energized for period of time specified by setting in the
JLG Control System. Engine start is disabled during this period.
On Deutz engines, glow plugs continue (post glow) after
engine has started three times the machine digit setting.
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