ICS 680ES Manual De Mantenimiento página 77

680ES SERVICE MANUAL
26. FUEL SYSTEM LEAKS
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.
26.5
Testing the fuel tank breather.
A. Attached the pressure gauge and
bulb to the main fuel pick-up tube at the
carburetor. Pressurize the tube to 4.5 psi
(0.3 bar).
B. The pressure should reduce to nearly
0 psi (0 bar) over about 3 seconds.
26.6
If the pressure does not reduce to 0 psi,
disassemble or replace the breather.
A. Clean the parts with solvent or fuel.
B. Assemble in reverse order.
C. Make sure that the spring taper is
oriented in the correct direction. Narrow
end towards the end of the cap.
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© 2020 ICS- Blount Inc Specifications and pricing are subject to change without notice. P/N 598000 REV01162020