Echo PB-2520 Operator's Manual page 34

MAINTENANCE
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.
34
A
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PB-2520
X7501190003