24
DEBRIS
BAG
Level 1.
Parts Required: none
Shake dust from bag and inspect for hole or tears. Inspect zipper and
clean debris from teeth to assure complete closing of zipper.
CARBURETOR
ADJUSTMENT
Emission Models
Level 2.
Tools required: Screwdriver with 2mm blade width, ECHO Tachometer
P/N 99051130017
Parts required: none.
NOTE
Do not adjust carburetor unless necessary. If you have difficultly,
see your ECHO dealer. Always adjust carburetor with pipes
assembled to unit.
Adjustment Screws
Idle Speed (A)
Control throttle opening at idle.
Low (LO) Speed (B)
Controls amount of fuel at low speed and
supplementary fuel for smooth progression from
idle to high speed.
Hi (HI) Speed (C)
Controls amount of fuel at full throttle
Before Adjustment
Check that:
- Air filter is clean and properly installed.
- Spark arrestor screen and exhaust port are free of carbon.
- Blower pipes are installed.
Initial Adjustment
1.
With engine off, turn HI speed screw (C) counterclockwise to
stop.
2.
Turn LO speed screw (B) midway between stops.
3.
Turn idle screw (A) until tip of screw just touches throttle plate;
then turn three (3) turns clockwise.
A
B
C
