Leak Testing Fuel System - Briggs & Stratton 40248 Operator's Manual

Figure 9 — Proper Connection Device Alignment
A - Fuel Hose Connector Nipple
B - LP Fuel Tank Shut Off Valve Connector
8. Turn the large coupling nut CLOCKWISE and hand
tighten to a full stop.
DO NOT cross thread the connection.
DO NOT use thread sealant.
DO NOT over-tighten the coupling nut.
DO NOT use tools to tighten the connection.
NOTE: If you are unable to make the connection, repeat
Step 7 or contact an LP fuel professional.
9. Repeat Steps 7 and 8 to attach the right LP fuel tank.
10. Confirm that each fuel hose does not have kinks and
that it does not touch sharp edges or surfaces that
may become hot during generator operation.
11. Perform a complete fuel leak test, using the
instructions given in "Leak Testing Fuel System".

Leak Testing Fuel System

1. Create a mixture of 50% water and 50% liquid
dishwashing soap.
2. Turn ON the fuel supply by turning both LP fuel tank
shut off valves one full turn COUNTERCLOCKWISE.
C
B
Figure 10 — Leak Test Locations
A - LP Fuel Tank Welds
B - LP Fuel Tank Shut Off Valves at Cylinder
Connections
C - Both Coupling Nuts to LP Fuel Tank Shut Off Valve
Connections
A
B
D G
E
G F
A
3. Using a sponge, rag or small non-metallic brush, apply
the soap water mixture at each of the locations
shown in Figure 10 below.
WARNING
Propane Gas is extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
• DO NOT smoke or permit ignition sources in the area while
conducting a leak test.
• Perform leak test OUTDOORS only in a well ventilated area.
• DO NOT perform a leak test with a match or open flame.
• DO NOT perform a leak test while the generator is in use.
• ALWAYS perform a leak test when first using the generator.
• ALWAYS perform a leak test every time an LP fuel tank or any
fuel system component is changed.
• ALWAYS perform a leak test whenever the generator is moved.
• Perform a leak test at least once per year or if your generator has
not been used for more than 60 days.
4. Check each location shown in Figure 10 for growing
bubbles, which indicates a fuel leak. Bubbles will look
something like this:
5. Close both LP fuel tank shut off valves (turn fully
CLOCKWISE).
6. Press and hold control panel's START/RUN/STOP
switch in START position for 5 seconds to release gas
pressure in hoses. See "Control Panel Controls and
Features".
7. Tighten or replace any leaking connections.
D G E
D - Back Sides of Coupling Nuts and Hose Connection
Joints
E - Brass T-Valve Connections (all joints)
F - Regulator Connection to Fuel Hose
G - The Full Length of all Fuel Hoses
H - Fuel Hose Connection to Generator (all joints)
B G H
9