Inspecting And Replacing Tank Vent - Yamabiko ECHO PB-2520 Service Manual

PB-2520
EB252

6-4 Inspecting and replacing tank vent

B
A
C
FUEL SYSTEM
B
NOTE: Tank vent prevents a vacuum from forming
in fuel tank when fuel in fuel tank is being con-
sumed. When pressure in fuel tank becomes too
high, tank vent releases the pressure.
1. Pull tank vent line (A) and remove tank vent (B).
2. Connect pressure tester 91139 (C) to tank vent
(B).
3. Apply pressure approx. 50 kPa (0.5 kgf/cm
psi). Make sure pressure is stable in range of 10 -
40 kPa (0.1 - 0.4 kgf/cm
4. If it is not in the range, gently clean tank vent
with compressed air or replace with new one.
NOTE: Do not disassemble valves in tank vent as-
sembly. Damage to valves will occur.
5. Apply negative pressure 5.8 inHg (20 kPa) (0.2
2
kgf/cm ) (3 psi).
6. Tank vent should pass air freely without holding
any pressure. If it does not, replace tank vent with
new one.
33
2
2
) (1.4 - 5.7 psi).
) (7