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Echo CS-670 - User Manual

Echo CS-670
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INSTRUCTION MANUAL
CHAIN SAW
WARNING
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
CS-670
X750-002 77 8
X750 316-340 9
ECHO, INCORPORATED
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
Printed in Japan 0709Am 1005 ES

Table of Contents

Questions and Answers

  • L
    larsonchelseaJul 27, 2025
    Why is my Echo CS-670 engine hard to start or not starting?
    • C
      Christopher HowardJul 28, 2025
      If your Echo Chainsaw engine is hard to start or doesn't start, several factors could be at play. First, check if the fuel filter or fuel line is clogged; if so, clean or replace them. If the fuel mixture is too rich, try opening the choke, cleaning/replacing the air filter, or adjusting the carburetor. Ensure the ignition switch is on and the spark plug isn't defective, covered with carbon, or fouled with fuel; clean, adjust the gap to 0.6 mm to 0.7 mm (0.024 to 0.028 in.), or replace it as needed. For carburetor or electrical problems, consult your ECHO dealer.
  • W
    williamschristopherAug 10, 2025
    What to do if Echo CS-670 engine runs, but dies or accelerates poorly?
    • M
      Mr. James MasonAug 10, 2025
      If your Echo Chainsaw engine runs but dies or accelerates poorly, the issue could stem from a dirty air or fuel filter, which should be cleaned or replaced. Alternatively, the fuel vent, cooling system, or exhaust port/spark arrestor screen might be blocked and need cleaning. Also, examine the spark plug; it may need cleaning, adjustment, or replacement. Finally, the carburetor may require adjustment.

Echo CS-670 Specifications

General IconGeneral
Engine Displacement66.7 cc
Bar Length20 inches
Weight6.6 kg
Fuel Capacity0.75 liters
Chain Pitch3/8 inch

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