Echo PPT-280 - Manual (Page 30)

30
a
C
A
C
D
B
Sprocket Cover Cleaning
1. Remove two (2) guide bar nuts (A), and unscrew sprocket cover
screw (B).
2. Remove sprocket cover (D).
3. Gently brush debris from inside sprocket cover and from around
sprocket.
4. Turn tension adjustment screw (C) to ensure chain tension adjuster
pin fits into the guide bar adjuster hole.
5. Install sprocket cover (D), tighten guide bar nuts (A) finger tight,
and fasten sprocket cover screw (B).
6. Adjust chain tension.
5. Tighten both guide bar nuts with nose held up. Tighten rear nut
first.
6. Pull the chain around the guide bar by hand. Reduce the chain
tension if you feel tight spots.
7. When chain is properly tensioned, tighten guide bar nuts securely.
IMPORTANT
Tighten guide bar nuts to 8 - 9 N•m (71 - 80 in. lbs.) DO NOT
over-tighten nuts. Damage may result.
8. Keep chain properly tensioned at all times.
NOTE
All chains require frequent adjustment.
9. Connect spark plug lead.
To Adjust Saw Chain Tension
WARNING
Always disconnect spark plug wire before servicing cutting attach-
ment. Wear gloves when handling saw chain, otherwise serious
personal injury may result.
To Adjust Saw Chain Tension
1. Move stop switch to STOP position.
2. Disconnect spark plug lead.
3. Loosen two guide bar nuts (A) until finger tight.
IMPORTANT
Always loosen guide bar nuts before turning the chain tension ad-
juster, otherwise the clutch cover and tensioner will be damaged.
4. Hold the bar nose up, and turn the adjuster screw (B) clockwise un-
til the chain fits snugly against the underside of the bar, as shown.
Cold Chain Only - turn adjuster screw CW an additional 1/8 - 1/4
turn.