Echo CS-680 - Manual (Page 28)

26 CS-680
GUIDE BAR
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- Clean the groove of the guide bar with a small
screwdriver.
- Clean oil holes with a wire.
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mount area before installation of the bar.
Replace either or both if worn.
SPROCKET
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damage or wear of saw chain.
- When the sprocket has worn out 0.5 mm (0.02
in.) or more, replace it.
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Replace it if worn.
CYLINDER FINS
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cooling air pass easily.
MUFFLER SPARK ARRESTOR
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plug lead.
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from muffler body.
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burned through.
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NOTICE
Carbon deposits in muffler will cause drop in
engine output. Spark arrestor screen must be
checked periodically.
AUTOMATIC OILER
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adjusted to 8 mL/min approximately at 7000
r/min, prior to shipment from factory.
- To increase the delivery volume, turn the
adjusting knob clockwise.
When the knob touches stopper and stops,
this position indicates maximum discharge
volume. (15 mL/min at 7000 r/min)
- Do not turn the adjusting knob beyond the
maximum or minimum limit of volume
adjustment.
Worn : 0.5 mm (0.02 in.)
Groove
Oil hole
Cylinder fins
Spark arrestor screen
Muffler
Screen cover
(Clutch)
Sprocket
Decrease Increase
Adjusting knob