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F/N 71537 Oct 07 © 2007 ICS, Blount Inc.
TITLE613GC SERVICE MANUAL
75
26. FUEL SYSTEM LEAKS
D Plug one end of the main fuel pick-up
tube.
E Re-pressurize the tube to 7 psi
(0.5 bar).
F Replace the tube if pressure is not
maintained.
G If the main fuel pick-up tube does
maintain pressure, then the leak ha
been isolated to the carburetor. Refer
to the Walbro Diaphragm Carburetor
Service Manual.
26.3 The fuel tank breather stabilizes the
pressure in the fuel tank preventing
both excessive pressure, which
could flood the engine, and negative
pressure, which could starve the
engine of fuel.
26.4 Fuel tank breather is located inside
the air filter compartment.