Instructions / Assembly
SAFETY CS-400
6 X7503255900
© 1/2017 ECHO Inc.
2. Keep a good firm grip on the saw with both hands, the right hand on the 
rear handle, and the left hand on the front handle, when the engine is 
running. Use a firm grip with thumbs and fingers encircling the chain saw 
handles. A firm grip will help you reduce kickback and maintain control of 
the saw. Don’t let go.
3. Make sure that the area in which you 
are cutting is free from obstructions. 
Do not let the nose of the guide bar 
contact a log, branch, or any other 
obstruction which could be hit while 
you are operating the saw.
4. Cut at high engine speeds.
5. Do not overreach or cut above 
shoulder height.
6. Follow manufacturer’s sharpening and maintenance instructions for the 
saw chain.
7. Only use replacement bars and chains specified by the manufacturer or the 
equivalent.
Correct Use Of Chain Brake
Chain Brake Operation
• Set the lever in the unlocked position 
before starting to cut.
• If the brake is tripped by kickback 
reaction, the chain will stop 
immediately. Release the throttle to 
avoid possible damage to the engine or 
clutch.
• Do not attempt to operate the engine with the brake locked.
Testing The Brake
• Start the engine on a solid level surface 
and run at a fast idle until warm.
• Hold the saw firmly by the handles and 
accelerate the engine to a fast idle.
• Slowly operate the chain brake lever 
while holding the saw firmly on the 
ground. When the brake lever trips, the 
chain should stop. Immediately release the throttle trigger.
Do not allow the saw to tip forward in order to avoid damage to the chain.
Linear kickback
Kickback
Pinch
Locked
Unlocked










