Справочник Пользователя для Echo 2CS-450

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. 

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

All chains require frequent adjustments.