22
X7503274701
© 8/2015 ECHO Inc.
OPERATION
340S
Running
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.
1. After engine starts, allow it to return to idle and warm up
before using.
2. Move chain brake lever fully REARWARD to UNLOCK chain
brake.
3. Squeeze throttle trigger (B) gradually and increase engine
speed.
4. The chain starts running when the engine reaches clutch
engagement speed (see technical data page).
5. Confirm proper acceleration and lubrication of chain and bar.
6. Do not run the engine at high speed unnecessarily.
7. Be sure that saw chain stops moving when throttle trigger is
released.
Stopping
1. Release throttle trigger and allow engine to idle.
2. Move ignition switch (A) DOWN to “
STOP
” position.
Note: If engine does not stop, pull choke control knob OUT fully to stop engine.
Return the unit to your authorized dealer to check and repair stop switch before starting the engine
again.
Checking Chain Tension
Chain tension should be checked frequently during work and
corrected as necessary.
Unlock Chain brake
A
B
