Chain Lubricant - Echo CS-4920 Operator's Manual

OPERATION
Units equipped with a momentary STOP Switch automatically
return to RUN position. Engine can start unintentionally. Always
remove spark plug lead from spark plug before assembling or
performing maintenance procedures, otherwise, serious
personal injury can result.
Servicing Fuel and Oil
When the fuel tank cap or oil tank cap
is difficult to remove, remove the
spark plug lead, pull the starter
handle slowly, and use the starter
handle to assist in removal of the cap.
Note: Not all caps include this
feature.

Chain Lubricant

Note: Cap indication - Fuel/oil tanks are indicated by the following
illustrations
Proper lubrication of the chain while in operation reduces friction between
the chain and the guide bar to a minimum and assures a longer service life.
• Use bar and chain oil of high
quality for this purpose.
• Do not use used or reclaimed oil
to avoid various oiler problems.
• Use high quality bar and chain oil.
• Use bar and chain oil of the
following grades:
• SAE No. 30....in summer
• SAE No. 10....in winter or when cutting resinous trees.
• When refueling, also refill chain oil.
30
Fuel tank cap
© 09/2022 ECHO Incorporated
CS-4920
Oil tank cap
X7503352100