Check And Adjust The Engine Rpm - Genie GS-3384 Service Manual

January 2013
B-4
Check and Adjust the
Engine RPM
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
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: The on-board self diagnostics incorporate a
built-in engine tachometer. The first two digits of
the engine RPM are displayed on the diagnostic
display when the start toggle switch is moved to
the position with the engine running. Engine
START
RPM equals the first two digits multiplied by 100.
Note: Perform this procedure after warming the
engine to normal operating temperature.
Ford models:
Note: The engine rpm is controlled by the ECM and
can only be adjusted by reprogramming the ECM. If
rpm adjustment or service is required, please
contact the Genie Industries Service Department
OR your local Ford dealer.
Part No. 84793
Section 3 • Scheduled Maintenance Procedures
Deutz models:
1 Start the engine from the ground controls.
2 Press and hold the start button and check the
engine RPM on the diagnostic display. Refer to
Section 2, Specifications.
Skip to step 6 if the low idle rpm is correct.
3 Release the latches on the engine tray and fully
slide the engine tray out.
4 Insert a 6 inch / 15 cm screwdriver or rod into
the engine tray lock hole located near the
engine tray roller wheels to prevent the engine
tray from moving.
5 Loosen the low idle lock nut and turn the low idle
adjustment screw clockwise to increase the
rpm, or counterclockwise to decrease the rpm.
Tighten the low idle lock nut and repeat step 2.
f
GS-84 • GS-90
CHECKLIST B PROCEDURES
a
b
e c
d
Deutz models with throttle linkage
a low idle adjustment screw
b low idle lock nut
c yoke
d yoke lock nut
e high idle adjustment lock nuts
f solenoid boot
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