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Chapter 11 – Troubleshooting
Symptom
Engine will not start from
upper controls.
Engine starts from the upper con-
trols but no boom functions work
– machines with AC generator
option only.
Engine dies when the control se-
lector switch at the lower controls
is placed in the upper control
position.
Constant tone alarm sounds while
the engine is running.
66
Possible Cause
Switches are set wrong. The engine
will not crank.
Platform foot switch is activated.
The controls selector switch was left
in the on position for 30 seconds or
longer before turning it to start.
The AC generator switch is in the
generator position.
Upper controls are not set-up
properly.
High engine temperature.
Low oil pressure.
Corrective Action
Turn the battery disconnect switch on
and then at the lower controls:
• Turn the controls selector switch off.
• Pull the emergency stop button
outward.
• Place the controls selector
switch in the upper control posi-
tion.
From the upper controls:
• Turn the start switch off.
• Pull the emergency stop button
outward.
• Place the start switch in the on
position to start.
Do not step on foot switch while
starting the engine.
Turn the switch back to off, then to
start within 30 seconds.
Place the switch in the machine po-
sition to operate machine functions.
At the upper controls, pull the emer-
gency stop button upward and place
the start switch in the on position.
Lower the platform and reduce the
engine speed to idle for five minutes.
Turn the engine off and let it cool. Do
not restart the engine until the cause
of overheating has been corrected.
Lower the platform and turn the
engine off. Do not restart the engine
until the cause of low oil pressure has
been corrected.
460SJ – 1433685
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