April 2018 Maintenance Manual
Quarterly Maintenance Procedures
Part No. 1268489GT S
®
Booms • Z
®
Booms 49
Q-11
Check and Adjust the Engine
RPM
Engine specifications require that this procedure be
performed quarterly.
Maintaining the engine rpm at the proper setting for
both low and high idle is essential to good engine
performance and service life. The machine will not
operate properly if the rpm is incorrect and
continued use may cause component damage.
Note: These procedures do not apply to the
following engine models. The engine RPM is
controlled by the ECM and can only be adjusted by
re-programming the ECM. If RPM or service is
required, please contact Genie Product Support.
GM Models: .998L • 3.0L
Continental Models: TME27
Ford Models: DSG-423 • MSG-425
Deutz Models: D 2.9 L4 • TD 2.9 L4 • D436 L3i
CN3
Perkins Models: 403F-11 • 404D-22T • 404F-22 •
404F-22T • 854F-34T
Note: Some procedures may require two people.
Note: For engine RPM information refer to
Specifications, Engine Specifications for your
engine model.
Models with ALC-600 operating system:
Note: Use the following chart to identify the
description of each LCD screen control button used
in this procedure.
Home Maintenance Faults Settings
Low idle High idle Gauges
1 Start the engine from the ground controls.
2 Press the Home button on the display. Press
button 2 under the engine idle icon and select
low idle.
3 Press button 1 under the gauges icon. Scroll
down to RPM and press Ok.
Result: Low idle rpm is correct. Continue with
step 4.
Result: Low idle rpm is not correct. Follow the
low rpm idle procedure for your engine model.
4 Press button 2 under the engine idle icon and
select high idle.
Result: High idle rpm is correct.
Result: High idle rpm is not correct. Follow the
high rpm idle procedure for your engine
model.
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