Test The Engine Speed Select; Test Fuel Select Operation - Gasoline/Lpg Models - Genie Z-45/22 Service Manual

Section 4 - Scheduled Maintenance Procedures
TABLE B PROCEDURES
B-21

Test the Engine Speed Select

A properly operating engine rpm select switch is
essential to good engine performance and safe
machine operation. There are three rpm settings:
The foot switch activated high idle (rabbit and foot
switch symbols) should be sued for normal
machine operation. This selection activates high
idle only when the foot switch is pressed down.
Low idle (turtle symbol) mode allows the operator
to control individual boom functions only.
High idle (rabbit symbol) mode allows the operator
to control multiple boom and/or drive functions
simultaneously. This setting maintains a consistent
high idle and usually selected only when the
generator option is being used.
1 Pull out the Emergency Stop button to the on
position at both the ground and platform
controls.
2 Start the engine from the ground controls. Then
move the engine speed control switch to high
idle (rabbit symbol) and hold in the on position.
Result: The engine should change to high idle.
3 Release the engine speed control switch.
Result: The engine should return to low idle.
4 Turn the key switch to platform controls.
5 At the platform controls, move the engine
speed control switch to high idle (rabbit
symbol).
Result: The engine should change to high idle.
6 Move the engine speed control switch to low
idle (turtle symbol).
Result: The engine should change to low idle.
7 Move the engine speed control switch to foot
switch activated high idle (rabbit and foot
switch symbol).
4 - 20
Result: The engine should not change to high
idle.
8 Press down the foot switch.
Result: The engine should change to high idle.
Specifications
High idle
Low idle
B-22
Test Fuel Select Operation -
Gasoline/LPG Models
The ability to select and switch between gasoline
and LP fuels as needed is essential to safe
machine operation. A fuel selection can be made
when the engine is running or not. Switching
malfunctions and/or the failure of the engine to run
properly in both fuel modes and through all idle
speeds can indicate fuel system problems that
could develop into a hazardous situation.
1 Move the fuel select switch to gasoline and
then move the engine speed control switch to
foot switch activated high idle (rabbit and foot
switch symbol).
2 Start the engine from the platform controls and
allow it to run at low idle.
3 Press down the foot switch to allow the engine
to run at high idle.
Result: The engine should start promptly and
operate smoothly in low and high idle.
4 Release the foot switch and stop the engine.
5 Move the fuel select switch to propane gas.
Genie Z-45/22
Service Manual - First Edition
2150 rpm
1200 rpm
Perform this test after checking
the gasoline and propane gas fuel
levels, and warming the engine to
normal operating temperature.
Part No. 29487