Echo CS-271T - Guide Bar, Sprocket and Oiler Maintenance

FUEL SYSTEM
CS-271T
26
4-4 Inspectingandreplacingtankvent(continued)
NOTE:Inspectionusing897803-30133
If pressure tester 91024 is not available, tank
vent can be inspected with pressure tester
89780330133 as follows.
1. Connect tank vent (A) to pressure tester
89780330133 (B).
2. Apply pressure approx. 50 kPa (0.5 kgf/cm
2
) (7
psi). Make sure pressure is stable in range of 10 -
40 kPa (0.1 - 0.4 kgf/cm
2
) (1.4 - 5.7 psi).
3. 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.
4. Remove cap (C) of tank vent, and clean sponge
(D).
5. Cut pipe 36301100210 (E: 7x11x170mm) and
38201101110 (F: 9x13x350) in approx. 30mm (1
1/4 in) length, and connect them to pressure tester
as shown. Connect tank vent (A) without cap to
pipe as shown.
6. Plug hole (a) with nger and apply pressure 20
kPa (0.2 kgf/cm
2
) (3 psi). The pressure should hold
steady.
7. Remove nger from hole (a). Tank vent should
pass air freely without holding any pressure. If it
does not, replace tank vent with new one.
D
E
F
C
B
A
a
A