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June 2022
Q-12
Q-12 Insp ect th e Fuel Tank Check Valve Ve nting Sys tem - GS- 69 R T G as M odels
Inspect the Fuel Tank Check
Valve Venting System - GS-69 RT
Gas Models
Note: For machines located in the United States,
EPA Certificate 40 CFR Part 1060 requires that
the check valve be in proper working condition.
Genie specifications require that this procedure be
performed quarterly.
Free-breathing fuel tank check valve is essential
for good machine performance and service life. A
dirty or clogged check valve may cause the fuel
tank to not vent properly. Extremely dirty
conditions may require that the check valve be
inspected more often.
Explosion and fire hazard.
Engine fuels are combustible.
Perform this procedure in an
open, well-ventilated area away
from heaters, sparks, flames and
lighted tobacco. Always have an
approved fire extinguisher within
easy reach.
1
Locate the check valve near the top of the fuel
tank.
2
Remove the check valve from the fuel lines.
3
Check for proper venting.
Result: Air passes through the check valve.
Proceed to step 4.
Result: If air does not pass through the check
valve, replace the check valve. Proceed to
step 4.
Note: When checking for positive venting, air
should pass freely through the check valve only in
one direction from the tank.
4
Securely install the check valve to the fuel
lines.
Part No. 1272215GT
Quarterly Maintenance Procedures
Q-13
Q-13 Tes t the Fu el Select Ope rati on - Gas oline/ LPG Mo dels
Test the Fuel Select Operation -
Gasoline/LPG Models
Genie specifications require that this procedure be
performed quarterly.
The ability to select and switch between gasoline
and LPG 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
start and run properly in both fuel modes and
through all idle speeds can indicate fuel system
problems that could develop into a hazardous
situation.
Note: Perform this test after checking the gasoline
and LPG fuel levels, and warming the engine to
normal operating temperature.
1
Start the engine from the platform controls
and allow the engine to run at low idle.
2
Press high idle button at the platform controls
to allow the engine to run at high idle.
Result: The high idle indicator light should be
on and the engine should start promptly and
operate smoothly in low and high idle.
3
Press high idle button again to return the
engine to low idle.
Result: The high idle indicator light should
turn off and the engine should return to low
idle.
Scissor Lifts
Maintenance Manual
39
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