Instructions / Assembly
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© 1/2017 ECHO Inc.
CS-400 STORAGE
Fuel vapors are extremely flammable and may cause fire and/or 
explosion. Never test for ignition spark by grounding spark plug 
near cylinder plug hole, otherwise serious personal injury may 
result.
STORAGE
Storage After Use
• Inspect and adjust every part of the chain saw.
• Completely clean every part and repair if necessary.
• Apply thin coating of oil on metal parts to prevent rust.
• Remove chain and guide bar.
• Drain fuel tank completely. Press purge bulb 6-7 times to remove remaining 
fuel from carburetor then drain the tank again. Close choke, start and run the 
engine until it stops due to lack of fuel.
• Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.) of 
fresh, clean, two-stroke engine oil into the cylinder through the spark plug 
hole.
• Store in a dry area, free from dust.
Do not store in an enclosure where fuel fumes may accumulate or 
reach an open flame or spark.
Do not lend or rent your chain saw without the Instruction manual 
and Safety manual.
Note: 
• For future reference, you should keep this Instruction manual and the 
Safety manual.
• If this Instruction manual or the Safety manual has become illegible or is 
lost, please contact your ECHO dealer, or go to www.echo-usa.com.










