Echo shindaiwa PB-8010 - Inspecting Tank Vent

FUEL SYSTEM
PB-8010, EB810
28
4-5 Inspecting tank vent
NOTE:
Tank vent prevents a vacuum from forming in fuel tank when fuel in fuel tank is being consumed.
When pressure in fuel tank becomes too high, tank vent releases the pressure.
Way1: Using Pressure / vacuum tester 91149 (A)
1. Remove tank vent (B) from tank vent line and
connect pressure / vacuum tester 91149 (A).
2. Apply pressure approx. 50kPa (0.5 kgf/ cm2)
(7 psi), make sure the pressure is stable in range
of 10 - 40 kPa (0.1 - 0.4 kgf/cm2) (1.4 - 6psi).
3. If not, gently clean tank vent (B) with com-
pressed air or replace with new one.
4. Apply negative pressure 20 kPa (0.2 kgf/cm2)
(3 psi).
5. Tank vent should pass air freely without holding
any pressure. If not, replace with new one.
Way2: Using Pressure tester 897803-30133 (A)
1. Remove tank vent (B) from tank vent line and
connect pressure tester 897803-30133 (A).
2. Apply pressure approx. 50 kPa (0.5 kgf/cm2)
(7 psi), make sure the pressure is stable in range
of 10 - 40 kPa (0.1 - 0.4 kgf/cm2) (1.4 - 6 psi).
3. If not, gently clean tank vent (B) with com-
pressed air or replace with new one.
4. Remove cap (C) of tank vent (B), and clean
sponge (D).
5. Cut pipe 363011-00210 (E: 7x11x170mm) and
382011-01110 (F: 9x13x350) in approx. 30mm (1
1/4 in) length, and connect them to pressure tester
as shown. Connect tank vent (B) without cap to
pipe as shown.
6. Plug hole (b) with fi nger and apply pressure 20
kPa (0.2 kgf/cm2) (3 psi). The pressure should
hold steady.
7. Remove fi nger from hole (b). Tank vent should
pass air freely without holding any pressure. If not,
replace with new one.
B
A
B
A
C
D
E
F
B
C
b