JLG 4394RT Service Manual - Manual (Page 18)

SECTION 1 - SPECIFICATIONS
1-8 – JLG Sizzor – 3121133
13. Fuel Filter (Propane) - GM
• Interval - 3 Months or 150 hours of operation
• Comments - Replace filter. Refer to Propane Fuel Filter
Replacement
Draining Oil Build Up From The Propane
Regulator
During the course of normal operation oils may build
inside the primary and secondary chambers of the pro-
pane pressure regulator. These oils may be a result of
poor fuel quality, contamination of the fuel supply chain,
or regional variation in the make up of the fuel. If the build
up of the oil is significant this can effect the operation of
the fuel control system. Refer to Section 1.13, Operator
Maintenance for maintenance intervals. More frequent
draining may be required if the fuel supply has been con-
taminated.
NOTICE
FOR BEST RESULTS WARM THE ENGINE TO OPERATING TEM-
PERATURE BEFORE DRAINING. THIS WILL ALLOW THE OILS TO
FLOW FREELY FROM THE REGULATOR.
1. Move the equipment to a well ventilated area.
Ensure there are no external ignition sources.
2. Start the engine and bring to operating temperature.
3. With the engine running, close the manual tank
valve and run the engine out of fuel.
4. Push in the Emergency Switch once the engine
stops.
5. Disconnect the electrical connection to the LPG fuel
temperature sensor in the auxiliary fuel port of the
EPR.
6. Remove the retainer clip for the LPG fuel tempera-
ture sensor and remove the sensor from the regula-
tor body.
NOTE: Have a small container ready to collect oil that will
drain freely from the regulator at this point.
7. Once all of the oil has been drained, reinstall the
LPG fuel temperature sensor and reconnect the
electrical connector.
8. Open the fuel tank manual valve.
9. Start the engine and verify all connections are
secure.
10. Dispose of any drained oil per local regulations in a
safe and proper fashion.