Echo X7503196704 - Manual (Page 12)

12 CS-450
6. Mount guide bar on studs and slide toward
clutch to make saw chain installation easier. In-
stall chain with cutters on top of guide bar facing
forward.
7. Unlock the chain brake, and install the clutch
cover over the guide bar studs. Ensure chain
tension adjuster pin fits into the guide bar
adjuster hole, brake band is positioned around
clutch drum, and pin at rear of clutch cover fits
hole on engine cover. Tighten clutch cover nuts
finger tight.
8. 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. Tighten clutch
cover nuts finger tight.
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 nuts before turning
the chain tension adjuster, otherwise the clutch
cover and tensioner will be damaged.
1. Loosen air cleaner cover knob and remove air
cleaner cover.
2. Remove spark plug lead.
3. Loosen two clutch cover nuts, if necessary.
4. Hold the bar nose up, and turn the adjuster
screw clockwise until chain contacts underside
of the bar.
5. Tighten both nuts with the bar nose held up.
6. Pull the chain around the bar by hand. Loosen
the adjustment if you feel tight spots.
7. When chain is properly tensioned, tighten clutch
cover nuts securely - 20 to 23 N ·m (175 to 200
in. lb.).
8. Keep chain properly tensioned at all times.
Adjusting screw
Proper tension Improper tension
Unlock chain brake
Direction to
tension the
chain
Guide bar
adjuster
hole
Clutch cover
Brake connector
Nuts
Adjuster pin
Clutch
Brake band
Guide bar studs
Hole
Pin
nOTE
All chains require frequent adjustments.