Echo X750020201 User Manual

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CS-352

•  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.

•  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.

•  Check periodically.
•  Clogged fins will result in poor engine cooling.
•  Remove dirt and dust from between fins to let cooling 

air pass easily.

•  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.

Carbon deposits in muffler will cause drop in engine 

output. Spark arrestor screen must be checked 

periodically.

Worn : 0.5 mm (0.02 in.)

Groove

Oil hole

Cylinder fins 

Spark arrestor screen

Muffler

Screen cover

Sprocket

Oil filter

Oil tank cap

•  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.