Echo CS-4910 Operator's Manual page 28

OPERATION CS-4910
Stored two-stroke fuel can separate. ALWAYS shake fuel container
thoroughly before each use.
Used oil and gasoline, and soiled towels are hazardous waste
materials. Disposal laws vary by locality.
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
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