Echo CS-620P - Guide Bar; Sprocket; Cylinder Fins; Muffler Spark Arrestor

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CS-620P
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nswillresultinpoorenginecooling.
• Removedirtanddustfrombetweenns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mufercomponents.
• Replacescreenifitiscracked,orhasholes
burned through.
• Assemblecomponentsinreverseorder.
NOTICE
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.
Worn : 0.5 mm (0.02 in.)
Groove
Oil hole
Cylinder fins
Spark arrestor screen
Muffler
Screen cover
(Clutch)
Sprocket
DecreaseIncrease
Adjusting screw