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CS-310
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 dam-
age or wear of saw chain.
- When the sprocket has worn out 0.5 mm
(0.020 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 mufer body.
• Clean carbon deposits from mufer components.
• Replace screen if it is cracked, or has holes
burned through.
• Assemble components in reverse order.
NOTE
Carbon deposits in mufer will cause drop in
engine output. Spark arrestor screen must be
checked periodically.
Worn : 0.5 mm (0.020 in.)
Groove
Oil hole
Cylinder ns
Spark arrestor screen
Mufer
Screen cover
Sprocket