Echo CS-310 Service Manual

FUEL SYSTEM
CS-310
28
4-6 Replacing fuel line and fuel return line
1. Remove cylinder cover, air filter and cleaner
case.
2. Remove carburetor referring to “4-5 Replacing
purge bulb”.
3. Inspect fuel line (A) and fuel return line (B). Re-
place them if defective.
4. To replace fuel line and fuel return line, remove
fuel cap and remove fuel strainer (C) and clip (D)
from fuel line (A).
5. Remove grommet (E) from the unit together with
fuel line (A) and fuel return line (B).
6. Install fuel line (A) and fuel return line (B) on
grommet (E) as shown.
7. Install assembled grommet on the unit.
NOTE:
Assemble grommet, with fuel return line (B)
oriented towards rear handle.
8. Pull out fuel line from fuel tank and install clip
and fuel strainer to fuel line.
9. Reinstall carburetor, referring to “4-15 Installing
carburetor”.
10. Reinstall cleaner case, air filter and cylinder
cover.
C
B
A
D
60mm
(2.4in)
84mm
(3.3in)
A
E
B
A
E
B

Echo CS-310 Specifications

General

Engine Displacement	30.5 cc
Bar Length	14 inches
Weight	8.8 lbs
Chain Pitch	3/8 inch
Chain Gauge	0.050 inch