JLG 800A Operation And Safety Manual page 47

5. Engine Malfunction Indicator Light (Ford Engines prior
to S/N 62045)
Indicates that the Engine Control Module has detected a
malfunction in the Electronic Fuel Injection System and
a Diagnostic Trouble Code has been set in the ECM.
Refer to the Service Manual for instructions concerning
the trouble codes and trouble code retrieval.
The malfunction indicator light will illuminate for 2-3 sec-
onds when the key is positioned to the on position to act
as a self test.
6. Low Fuel Level Indicator.(N/A for liquid propane)
When illuminated indicates that the fuel level is 1/8 full or
less. When the light first turns on, there are approxi-
mately four usable gallons of fuel remaining.
7. Glow Plug Indicator (If Equipped)
When illuminated the glow plugs are operating. After
turning on ignition, wait until light goes out before crank-
ing engine.
3121209
SECTION 3 - MACHINE CONTROLS AND INDICATORS
8. Boom Malfunction Indicator
Indicates failure of one or both of the hydraulic limit
switches on the tower boom.
9. Platform Overload (If equipped)
Indicates the platform has been overloaded.
10. Hydraulic Oil Filter Indicator (Prior to S/N 85331)
A gauge indicates that the return oil filter is too restrictive
and needs to be replaced.
11. Transmission Pump Oil Filter Indicator (Prior to S/N
85331)
Indicates that the charge pump filter is too restrictive
and needs to be replaced.
12. Engine Air Filter Indicator (Prior to S/N 85331)
When illuminated indicates that the air filter is too restric-
tive and needs to be replaced.
– JLG Lift – 3-7