Echo CS-305, CS-306, CS-306 SETTING THE SAW CHAIN, CHAIN TYPE AND SPROCKET PITCH, 90°

SETTING THE SAW CHAIN

For setting saw chains, round file 4.5 mm (11/64”) and flat file are used.

•To keep correct position and correct angle, use the file holder.

-Round file and flat file are available from your Echo Dealer.

•File cutters as below.

30°

Keep this angle

PUSH FILE AS SHOWN

To sharpen other type chain, follow chain manufacturer’s instructions

Type : 90SG
1/5	Depth
	gauge

90°

HOLD FILE HOLDER	ONEFIFTHOFFILEDIAMETER
LEVEL	REMAINS ABOVE CUTTER EDGE

•Place the depth gauge tool firmly on guide bar so that depth gauge protrudes. Then file top of depth gauge with flat file until flat with top of the gauge tool.

-Be sure to round off the front edge of the depth gauge.

Depth gauge
tool	Round
Remove	off the
until flat	edge
with tool

•Properly filed cutters are shown below.

(Top plate angle)	(Side plate angle)	(Top plate cutting angle)	(Depth gauge)
	75°	50°	0.64 mm (0.025 in.)
			Parallel
30°

•When setting of the chain is finished, soak it in oil and wash away filings completely before using.

•When chain has been filed on the bar, supply sufficient oil to it, rotate the chain slowly to wash away the filings before using again.

•If the chain saw is operated with filings clogged in the groove, the saw chain and the guide bar will be damaged prematurely

•If the saw chain becomes soiled with resin, for instance, clean it with kerosene and soak it in oil.

CHAIN TYPE AND SPROCKET PITCH

Saw chain should be used with corresponding pitched sprocket. To identify chain type and pitch of sprocket, check as follows.

•Chain type number (A) is stamped on drive link.

•Sprocket pitch (B) is stamped on clutch drum.

		(SPROCKET)
	(DRIVE LINK)	90S
		Number
Number		indicates
indicates Chain	90	Chain type
type
	A	B

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