Echo CS-680 User Manual download pdf (Page 13)

CS-680

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. 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. Remove spark plug lead. (See page 25)

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

Direction to tension

the chain

Proper tension Improper tension

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 31 32

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Echo CS-680 User Manual Page 13