Operator Manual

SECTION 4 - MACHINE OPERATION
3121255 – JLG Lift – 4-7
4.4 ENGINE OPERATION
NOTE: Initial starting should always be performed from the
Ground Control station.
Starting Procedure
IF ENGINE FAILS TO START PROMPTLY, DO NOT CRANK FOR AN
EXTENDED TIME. SHOULD ENGINE FAIL TO START AGAIN, ALLOW
STARTER TO “COOL OFF” FOR 2-3 MINUTES. IF ENGINE FAILS AFTER
SEVERAL ATTEMPTS, REFER TO ENGINE MAINTENANCE MANUAL.
NOTE: Diesel engines only: After turning on ignition, operator
must wait until glow plug indicator light goes out before
cranking engine.
1. Turn key of SELECT switch to GROUND. Position
POWER/EMERGENCY STOP switch to ON, then push
the ENGINE START switch until engine starts.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES AT LOW SPEED
BEFORE APPLYING ANY LOAD.
2. After engine has had sufficient time to warm up, shut
engine off.
3. Turn Platform/Ground Select switch to PLATFORM.
4. From Platform, pull EMERGENCY STOP switch out, then
push the ENGINE START switch until engine starts.
NOTE: Footswitch must be in released (up) position before
starter will operate. If starter operates with footswitch in
the depressed position, DO NOT OPERATE MACHINE.
Shutdown Procedure
IF AN ENGINE MALFUNCTION CAUSES AN UNSCHEDULED SHUT-
DOWN, DETERMINE THE CAUSE AND CORRECT IT BEFORE RESTART-
ING THE ENGINE.
1. Remove all load and allow engine to operate at low
speed for 3-5 minutes; this allows further reduction of
internal engine temperature.
2. Push EMERGENCY STOP switch in.
3. Turn Platform/Ground Select switch to Off.
Refer to Engine Manufacturer’s manual for detailed informa-
tion.