JLG 680S Operator Manual - Manual (Page 64)

SECTION 4 - MACHINE OPERATION
4-2 – JLG Lift – 3121678
TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD MACHINE OR OPER-
ATE THE MACHINE ON AN OUT-OF-LEVEL SURFACE.
4.3 ENGINE OPERATION
NOTE: Initial starting should always be per-
formed from the Ground Control con-
sole.
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 MIN-
UTES. 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 Platform/Ground Select switch to
Ground.
2. Pull the Power/Emergency Stop switch to On.
3. Push the Engine Start switch until engine starts.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES AT LOW SPEED BEFORE APPLYING
ANY LOAD.
4. After engine has had sufficient time to warm
up, push in the Power/Emergency Stop switch
and shut engine off.
5. Turn Platform/Ground Select switch to Plat-
form.