Echo CS-310 - Manual (Page 13)

13 CS-310
4. 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.
5. Install the clutch cover over the guide bar studs.
Ensure chain tension adjuster pin fits into the
guide bar adjuster hole. Tighten clutch cover
nuts finger tight.
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. Release the cylinder cover latches, and remove
the cylinder cover. Remove spark plug lead.
2. Loosen two clutch cover nuts, if necessary.
3. Hold the bar nose up, and turn the adjuster
screw clockwise until chain fits snugly against
underside of the bar.
4. Tighten both nuts with the bar nose held up.
5. Pull the chain around the bar by hand. Loosen
the adjustment if you feel tight spots.
6. When chain is properly tensioned, tighten clutch
cover nuts securely - 20 to 23 N·m (175 to 200
in. lb.).
7. Keep chain properly tensioned at all times.
Adjusting screw
Proper tension Improper tension
Direction to tension the chain
Guide bar
adjuster
hole
Clutch cover
Nuts
Adjuster pin
Clutch Guide bar studs
NOTE
All chains require frequent adjustments.