Instructions / Assembly
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© 1/2017 ECHO Inc.
CS-400 MAINTENANCE
• Be sure to round off the front edge of 
the depth gauge.
• Properly filed cutters are shown in 
illustration.
• When setting of the chain is 
finished, soak it in oil and wash 
away filings completely before 
using.
• When chain has been filed on the 
bar, supply sufficient oil to it, move the 
chain slowly to wash away the filings 
before using again.
• If the chain saw is operated with filings 
clogged in the groove, the saw chain 
and the guide bar will be damaged 
prematurely.
• If the saw chain becomes soiled with 
resin, for instance, clean it with 
kerosene and soak in it oil.
To sharpen other chains, follow chain manufacturer’s instructions.
Depth gauge tool
55°
Side plate angle
30°
Top plate filing angle
0.64 mm (0.025 in.)
Parallel
Depth gauge










