Owner's Manual

22 X7503270007
© 08/2013 ECHO Inc.
OPERATION CS-310
Starting Warm Engine
Make sure the bar and chain are free from any obstruction 
when starting the chain saw.
1. Move chain brake lever fully forward to lock chain brake 
before starting.
2. Confirm there is fuel and chain oil in the tanks.
3. Move ignition switch to “RUN” position.
4. Securely hold the chain saw as shown and pull starter 
handle.
5. Choke may be used if necessary, but after first starting 
sound, squeeze throttle trigger to release choke and return 
engine to idle.
Note: If engine does not start after 5 pulls, use cold start 
procedure.
Note:  Do not increase engine speed while chain brake is locked. 
Severe brake damage will result.
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. 
(Non-adjustable automatic oil pump)
6. Do not run the engine at high speed unnecessarily.
Chain brake
Unlock Chain brake
A
B










