MAINTENANCE
CS-310
46
X7503275401
© 02/2019 ECHO Inc.
Note: Federal EPA regulations require all model year 2012 and later
gasoline powered engines produced for sale in the United
States to be equipped with a special low permeation fuel
supply hose between the carburetor and fuel tank. When
servicing model year 2012 and later equipment, only fuel
supply hoses certified by EPA can be used to replace the
original equipment supply hose. Fines up to $37,500 may be
enforced for using an un-certified replacement part.
Oil Filter
• Check periodically.
• Do not allow dust to enter into oil
tank.
• A clogged oil filter (B) will affect the
normal lubricating system.
1.
Pull filter out through oil port, and
inspect filter.
2.
If the filter is dirty, wash it in gasoline or replace it.
3.
When the inside of the tank gets dirty, rinse the tank out with gasoline
to clean it.
Guide Bar
1.
Clean before using.
2.
Clean the groove (A) of the guide
bar with a small screwdriver.
3.
Clean oil holes (B) with a wire.
4.
Invert guide bar periodically.
5.
Clean the bar mount area before
installing of the bar.
Sprocket
• A damaged sprocket will cause
premature damage or wear of saw
chain.
• When the sprocket has worn 0.5
mm (0.020 in.) or more, replace it.
• Check sprocket when you install
new chain. Replace it if worn.
B
A
B
Worn: 0.5 mm (0.020 in.)
