Echo CS-2600ES - Manual (Page 10)

SERVICE INFORMATION
CS-2600ES
CS-2700ES 10
2-3 Adjusting carburettor
1. Start engine and warm it up well for 70 seconds
as follows.
(1) 5 seconds at idle and 5 seconds at WOT.
(2) 5 seconds at idle and 5 sedonds at WOT.
(3) 5 seconds at idle and 10 seconds at WOT.
Repeat above (1) to (3) again.
2. Using 2.5 mm wide blade screw driver, adjust L
mixture needle to obtain maximum idle speed.
3. Set idle speed to 4,400 r/min by turning idle adjust
screw.
4. Turn L mixture needle anticlockwise to reduce
engine idle speed 1,000 to 1,100 r/min to set idle
speed in the range of 3,300 to 3,400 r/min.
NOTE : Engine speed must be allowed to stabilize
a minimum of 20 seconds after each adjustment of
L mixture needle to assure accurate tachometer
readings.
5. Turn H mixture needle clockwise to obtain
approx. 12,000 r/min at WOT.
6. Adjust WOT engine speed in the range of 10,700
to 11,200 r/min by turning H mixture needle
anticlockwise.
NOTE : During H mixture needle adjustment, do not
run engine at high speed without load longer than
10 seconds.
7. If the engine speed at WOT is above 11,200
r/min, adjust H mixture needle anticlockwise and set
maximum engine speed at less than 11,200 r/min.
L
H
idle adjust screw
(Continued)