Echo CS-550P Instruction Manual - page 28

26

CS-550P

Worn : 0.5 mm (0.02 in.)

Groove

Oil hole

GUIDE BAR

• Clean before using.

- Clean the groove of the guide bar with a small

screwdriver.

- Clean oil holes with a wire.

• Reverse guide bar periodically.

• Check sprocket and the clutch and clean the bar

mount area before installation of the bar.

Replace either or both if worn.

SPROCKET

• A damaged sprocket will cause premature

damage or wear of saw chain.

- When the sprocket has worn out 0.5 mm (0.02

in.) or more, replace it.

• Check sprocket when you install new chain.

Replace it if worn.

CYLINDER FINS

• Check periodically.

• Clogged fins will result in poor engine cooling.

• Remove dirt and dust from between fins to let

cooling air pass easily.

MUFFLER SPARK ARRESTOR

• Remove air cleaner cover and remove spark

plug lead.

• Remove spark arrestor screen cover and screen

from muffler body.

• Clean carbon deposits from muffler components.

• Replace screen if it is cracked, or has holes

burned through.

• Assemble components in reverse order.

NOTE

Carbon deposits in muffler will cause drop in

engine output. Spark arrestor screen must be

checked periodically.

AUTOMATIC OILER

• The discharge volume of the automatic oiler is

adjusted to 4 mL/min approximately at 7000 r/min,

prior to shipment from factory.

- To increase the delivery volume, turn the

adjusting screw counterclockwise.

When the screw touches stopper and stops,

this position indicates maximum discharge

volume. (13 to 14 mL/min at 7000 r/min)

- Do not turn the adjusting screw beyond the

maximum or minimum limit of volume

adjustment.

Decrease

Increase

Adjusting screw

Cylinder fins

Spark arrestor screen

Muffler

Screen cover

Clutch

(Sprocket)

Exhaust guide