Oil tank cap
Oil filter 
OIL FILTER
•Check periodically.
•Do not allow dust to enter into oil tank.
•A clogged oil filter will affect the normal lubricating system.
•Pull it out through oil filling hole with a piece of steel wire or the like.
•If the filter is dirty, wash it in gasoline or replace it.
•When the inside of the tank gets dirty, rinsing the tank out with gasoline can clean it.
Groove
Sprocket 
Oil hole
Worn : 0.5 mm (0.02 in.)
Cylinder fins |
Muffler
Spark arrestor screen
Screen cover
GUIDE BAR
•Clean before using.
-Clean the groove of the guide bar with a small screw- driver.
-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 cylinder 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.
NOTICE
Carbon deposits in muffler will cause drop in engine output. Spark arrestor screen must be checked periodically.
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