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16 X7503253302
© 12/2013 ECHO Inc.
DESCRIPTION CS-400F
2. Move the chain brake lever (A) (Front hand guard) fully
rearward to remove or install the sprocket guard (C).
3. Extend the knob lever (D), then turn knob counterclockwise to
remove knob and sprocket guard.
4. Remove guide bar and saw chain if necessary.
Note: See “Maintenance and Care” section for guide bar/saw chain
maintenance procedures.
5. Mount guide bar on studs (E) and slide toward sprocket (F) to
make saw chain installation easier. Install saw chain around
sprocket and guide bar as shown, with cutters on top of guide
bar facing forward.
6. Install the sprocket guard (C) over the guide bar studs. Ensure
chain tension adjuster pin (H) fits into the guide bar adjuster
hole (G), brake band (J) is positioned around clutch drum.
Install knob (D) and tighten securely with bar nose held up.
7. Turn saw over, and check brake band (J) for correct position on
clutch drum. If brake band is not in place around drum, remove
sprocket guard, and reinstall guard and knob.
8. Adjust saw chain tension, as instructed in “Adjustment, Chain
Tens ion”.
Improper sprocket guard assembly can result in serious
injury, and will cause severe saw damage if unit is started.
Never start or operate saw if brake band is not in place on clutch drum. Always check chain brake
operation after replacing guard. Do not use saw if chain brake does not function properly.
A
B
C
D
F
J
E
H
C
B
G
J