CS-400 OPERATION
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© 08/2020 ECHO Incorporated
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.
Moving parts can amputate fingers or cause severe injuries. 
Keep hands, clothing and loose objects away from all openings. 
Always stop engine, disconnect spark plug, and make sure all 
moving parts have come to a complete stop before removing 
obstructions, clearing debris, or servicing unit.
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a 
poison gas. Breathing CO can cause unconsciousness, serious 
injury, or death. Exhaust can cause serious burns. ALWAYS 
position unit so that exhaust is directed away from your face 
and body.
Oil tank capFuel tank cap