24 
Level 2.
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli- ance with emission regulations. Carburetor adjustments, other than idle speed, must be performed by an authorized ECHO dealer.
Before Adjustment
Check that:
•Air filter is clean and properly installed.
•Spark arrestor screen is free of carbon.
•Blower pipes are installed.
1.Start engine, run at idle for one minute.
2.Complete warm up by running at full throttle for 5 minutes, oper- ating choke twice to clear air from carburetor chambers.
3.Check idle speed and reset if necessary. If a tachometer is avail- able, idle speed screw (A) should be set to the specifications found on "Specifications page" of this manual. Turn idle screw
(A) clockwise to increase idle speed; counter clockwise to de- crease idle speed.
A
