Echo CS-420ES - Saw Chain Maintenance

23
FUEL SYSTEM
CS-370ES
CS-420ES
4-3 Replacing purge bulb
NOTE: It is possible to replace purge bulb, without
removing carburetor from the unit.
1. Remove switch bracket (A) from engine cover
(Refer to “3-5 Replacing ignition switch”).
2. Remove fuel return line (B) and fuel inlet line (C)
from purge bulb.
3. Pinch hooks (D) of purge bulb with needlenose
pliers and remove purge bulb.
4. Install new purge bulb.
5. Connect fuel inlet line (C) to shorter fitting (F).
6. Connect fuel return line (B) to the other fitting (E).
A
B
D
C
B
F
E
C