PB-2620 MAINTENANCE
X7501190602 33
© 10/2017 ECHO Inc.
If the engine is adjusted for operation above 335 m (1100 ft.) ASL, the
carburetor must be re-adjusted when operating the engine below
335
m (1100 ft.) ASL, otherwise severe engine damage may result.
Level 2.
Note: Every unit is run at the factory and the carburetor is set in
compliance with emission regulations. Carburetor
adjustments, other than idle speed, must be performed by an
authorized ECHO dealer.
Before adjustment make sure 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, operating
choke twice to clear air from carburetor chambers.
3. Check idle speed and reset if
necessary. If a tachometer is
available, 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
decrease idle speed.
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