Echo PB-251 Service Manual

PB-251
FUEL SYSTEM
28
5-4 Replacing fuel line, tank vent line and grommet
1. Disconnect fuel lines from carburetor.
2. Remove fuel line grommet (A) together with fuel
lines. Fuel strainer can be directly pulled out through
grommet hole.
3. Remove fuel strainer from fuel line.
4. For tank vent line replacement, remove air cleaner
case and carburetor from cylinder.
5. Pull out tank vent grommet (B) from fuel tank,
together with tank vent line.
6. Remove fuel lines and tank vent line from grom-
met. If pipe is defective, replace with a new one.
7. Insert new line as follows:
(E) (F) (G)
Trans-
Pipe
Black
parent
Black
(Strainer)
(Return)
(Vent)
Length mm 175 85 50
(inch) (6.89) (3.35) (1.97)
Distance (e) (f) (g)
mm 72~74 67~69 29~31
(inch) (2.84 ~ 2.91) (2.64 ~ 2.72) (1.14 ~ 1.22)
7. Install tank vent grommet (B) to fuel tank, together
with tank vent line. Connect tank vent.
8. Connect fuel strainer to fuel line. And then install
fuel line grommet (A) to fuel tank, together with fuel
lines.
9. Install carburetor and air cleaner case to cylin-
der.
10. Connect fuel lines to carburetor.
(G)
(F)
(E)
(e)
(f)
(g)
(A)
(B)
(A)
(B)

Echo PB-251 Specifications

General

Engine Displacement	25.4 cc
Air Speed	170 mph
Noise Level	70 dB(A)
Type	Handheld
Power Source	Gasoline
Fuel Capacity	16.9 fl oz