Subaru Robin EH72 LP/NG - Manual (Page 13)

13
GASEOUS FUEL
WARNING
▲
!
Do not refuel while smoking, near an open fl ame or other potential hazards.
Fuel Recommendations
LPG Propane content of 95% of higher
NATURAL GAS Methane content of 90% or equivalent
INSTRUCTIONS FOR
CONVERTING TO NATURAL GAS
OPERATION
The engine is optimized for LP operation from the
factory. The steps below show how to remove the
orifi ce for NATURAL GAS operation.
1. Remove Air Cleaner Assembly
2. Loosen fuel hose clamp and remove the 1”
black fuel hose from the front of the carburetor
3. Remove threaded brass orifi ce with either fl at
head screw driver or pliers
4. Replace fuel line hose and tighten clamp
5. Replace Air Cleaner Assembly
6. Check for leaks using the procedure below.
LEAK TESTING THE FUEL
SYSTEM
1. Create a mixture of 50% water and 50% liquid
dishwashing
soap.
2. Turn ON the fuel supply by turning the LP
fuel tank shut off calve on full turn COUNTER-
CLOCKWISE.
3. Using a sponge, rag or small non-metallic
brush, apply the soap water mixture at each of
the connection locations of the fuel piping
system.
4. Check each location for growing bubbles,
which indicates a fuel leak.
5. Close the LP fuel shut off valve.
6. Tighten or replace any leaking conncections.