OPERATING CONTROLS AND PROCEDURES MLC650 OPERATOR MANUAL
3-62
Published 08-12-19, Control # 224-13
5. For Cummins engine only, make sure the fuel system
shut-off valves (1, Figure 3-12
) are open as shown.
6. If necessary in cold weather, disengage the engine
clutch as shown in Figure 3-13
. This step will disconnect
the pumps from the engine and aid in cold weather
startup.
7. Turn the ignition switch to the RUN position.
• All indicator lights, the operating limit buzzer, and
the system fault beeper should come on for 2 to 3
seconds when the ignition switch is in RUN position.
If not, correct the fault as soon as possible.
• For a Cummins engine only, the WAIT
TO START icon will appear in the Main
Display indicating that the pre-heater is
warming the engine’s air intake.
The length of time the wait to start icon remains on
depends on ambient temperature. The lower the
ambient temperature, the longer the icon will stay
on.
8. When the WAIT TO START icon turns off, turn the
ignition switch to the START position.
.
9. Once the engine starts, increase engine speed as
necessary to keep the engine running.
CAUTION
Avoid Engine Clutch Damage!
Observe the following precautions for engine clutch:
• Decrease engine speed to idle before engaging or
disengaging clutch.
• Do not run engine longer than twenty minutes with
clutch disengaged.
• Disengage and engage clutch several times monthly
with engine running.
Figure 3-12. Fuel System Shut-Off Valves
View at Engine
Item Description
1 Fuel System Shut-Off Valve (4) Shown Opened
View at Fuel Tank
CAUTION
Avoid Starter Damage
If the engine does not start after 30 seconds of cranking,
wait a few minutes before starting again so the starter
motor cools.
Figure 3-13. Engine Clutch Lever
Item Description
1 Engage
2 Disengage
Through Access Cover
on Top of Engine