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

September 2005
REV D
B-6
Check and Adjust the
Engine RPM
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.
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
START
running. Engine RPM equals the
first two digits multiplied by 100.
Perform this procedure after
warming the engine to normal
operating temperature.
Ford and GM models:
The engine rpm is controlled by
the ECM and can only be adjusted
by re-programming the ECM. If
rpm adjustment or service is
required, please contact the Genie
Industries Service Department OR
your local Ford dealer.
Part No. 82259
Section 3 • Scheduled Maintenance Procedures
CHECKLIST B PROCEDURES
Deutz models:
1 Start the engine from the ground controls.
2 Before serial number GS8403-40213: Move
and hold the start toggle switch to the start
position and check the engine RPM on the
diagnostic display. Refer to Section 2,
Specifications.
After serial number GS8403-40212: 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.
f
Tighten the low idle lock nut and repeat step 2.
Deutz models with throttle linkage
a
b
c
d
e
GS-3384
a
b
e c
d
low idle adjustment screw
low idle lock nut
yoke
yoke lock nut
high idle adjustment lock nuts
3 - 23