Echo PPF-280 Manual do Utilizador descarregar pdf (Página 30)

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MAINTENANCE PPF-280

Saw Chain Tension Adjustment

Always disconnect spark plug wire before servicing cutting

attachment. 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.

Always loosen guide bar nuts before turning the chain tension adjuster, otherwise the clutch cover and

tensioner will be damaged.

4. Hold the bar nose up, and turn the adjuster screw (B) clockwise until 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.

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.

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.

Filing Standard Saw Chain

Power Pruner B&C Combinations

BAR P/N CHAIN P/N CHAIN TYPE LINKS PITCH GUAGE

Narrow Kerf

10" narrow bar P/N

10A4CD3739

90PX39CQ 90 39 3/8” 0.043

12" narrow bar P/N

12A4CD3744

90PX44CQ 90 44 3/8” 0.043

Regular

10" regular bar P/N

10A0CD3739

91VXL39CQ 91 39 3/8” 0.050

12" regular bar P/N

12A0CD3744

91VXL44CQ 91 44 3/8” 0.050

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Echo PPF-280 Manual do Utilizador Página 30