17 CS-450
STOP
Ignition switch
Throttle trigger
RUNNING WARNING
The saw chain should not move at idle, otherwise
serious personal injury may result.
NOTE
If saw chain moves adjust carburetor according to
“Carburetor Adjustment” instructions in this manual,
or see your dealer.
• When engine starts, keep idling for a few minutes.
• Set the brake lever in the unlocked position before
starting to cut.
• Pull throttle trigger gradually and increase revolution
of the engine.
• The chain starts running when the engine reaches
4000 r/min approximately.
• Conrm proper acceleration and lubrication of chain
and bar.
• Do not run the engine at high speed unnecessarily.
• Be sure that saw chain stops moving when throttle
trigger is released.
CHAIN LUBRICATION TEST
Hold the chain just above a dry surface and open
the throttle to half speed for 30 seconds.
A thin line of “thrown” oil should be seen on the
dry surface.
CAUTION
Do not operate with a loose chain.
CHECKING CHAIN TENSION
• Chain tension should be checked frequently
during work and corrected as necessary. See
"Adjusting Chain Tension."
NOTE
If engine does not stop, pull choke control knob
out fully to stop engine.
Return the unit to your authorized ECHO dealer
to check and repair stop switch before starting
the engine again.
STOPPING
• Release throttle trigger and move ignition switch
down to “STOP” position.
Unlock chain brake