Adjusting Chain Tension - Echo CS-400F Instruction Manual

F
J
Unlock chain brake
Proper tension Improper tension
CS-400F
E
G
H
C
B
5. Mount guide bar on studs (E) and slide toward clutch (F) to
make saw chain installation easier. Install chain with cutters
on top of guide bar facing forward.
6. Unlock the chain brake, and install the clutch cover (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) turning
clockwise 6 1/4 turns.
7. Turn saw over, and check brake band for correct position
on clutch drum. If brake band is not in place around drum,
remove cover, make sure brake is unlocked, and reinstall
cover and knob.
WARNING
Improper clutch cover 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
cover. Do not use saw if chain brake does not function
properly.

ADJUSTING CHAIN TENSION

IMPORTANT
Always loosen clutch cover knob before turning the chain
tension adjuster, otherwise the clutch cover and tensioner
will be damaged.
1. Remove spark plug lead.
2. Loosen clutch cover knob.
3. Hold the bar nose up, and turn the adjuster toward (+) until
chain contacts underside of the bar.
4. Tighten knob with the bar nose held up.
5. Pull the chain around the bar by hand. Loosen the adjust-
ment if you feel tight spots.
6. when chain is properly tensioned, tighten clutch cover
knob securely.
7. Keep chain properly tensioned at all times.
NOTE
All chains require frequent adjustments.
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