Echo CS-670 Operator's Manual page 16

Chain brake function
When the lever is pushed forward, chain brake
instantly work to stop the chain.
Chain brake release
When the lever is fully pulled, toward the
operator, brake is released.
CS-670
Kickback motion
Kickback
CHAIN BRAKE OPERATION
• Set the lever in the released 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 prevent to the engine or
clutch.
• Do not attempt to operate the engine with the
brake engaged.
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.
CAUTION
Do not allow the saw to tip forward in order to
avoid damage to the chain.
If the chain does not stop immediately, return the
saw to your authorized ECHO dealer for repair.
NOTE
• For practice, while cutting a small tree, push
the lever forward to engage the brake.
• At all the time, confirm whether the brake works
properly before each work.
• If the chain brake is clogged with wood chips,
function of the brake deteriorates a little.
Always keep the device clean.
• Do not increase engine revolution while the
chain brake is engaged.
• Chain brake is used in emergencies.
Do not use it unless absolutely necessary.
• When using throttle latch at starting, keep the
chain brake position.
And after starting the engine, release the brake
immediately.
• Never test the brake in an area where gasoline
fumes are present.
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