Stability, 3 engine operation, Starting procedure – JLG 450A_AJ Series II Operator Manual User Manual

Page 56: Stability -2, Engine operation -2, Starting procedure -2

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SECTION 4 - MACHINE OPERATION

4-2

– JLG Lift –

3121289

Stability

Machine stability is based on two (2) conditions which are called
FORWARD and BACKWARD stability. The machine’s position of
least FORWARD stability is shown in (See Figure 4-1.), and its posi-
tion of least BACKWARD stability is shown in (See Figure 4-2.)

TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD MACHINE OR OPERATE
THE MACHINE ON AN OUT-OF-LEVEL SURFACE.

4.3

ENGINE OPERATION

NOTE:

Initial starting must always be performed from the Ground Con-
trol 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.

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