JLG X20JP - X600AJ Service Manual - Manual (Page 107)

SECTION 3 - CHASSIS & TURNTABLE
3121623 – JLG Lift – 3-83
MALFUNCTIONS – CAUSES AND REMEDIES
y d e m e R s e s u a c e l b i s s o P s n o i t c n u f l a M
1.
Engine does not
start, or not imme-
diately, but can be
turned over easily
as usual.
At low
temperatures.
Speed control lever in stop or
idle position.
Engine shutdown pin in STOP
position.
No fuel in the injection pump.
Insufficient compression:
- Incorrect valve clearance.
- Cylinders and/or piston rings
worn.
Injector not functioning.
Below starting threshold
temperature.
Equipment not disengaged.
Preheating system faulty
(optional extra).
Fuel has inadequate resistance
to low temperatures.
Move lever to START position.
Move to operating position by
pulling the pin gently.
Add fuel.
Systematically check the entire
fuel supply system:
If still no fault found,
- check engine feed line
- check fuel filter
Check valve clearances, adjust if
necessary.
See workshop manual.
See workshop manual.
Operate preheater
(optional extra).
Disengage engine from equip-
ment, if possible.
See workshop manual.
Check whether clear (not turbid)
fuel emerges at the fuel line de-
tached from the injection pump.
If turbid or separated - either
warm up the engine or drain the
complete fuel supply system.
Refill with winter-grade fuel to
which paraffin has been added.