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AIR FILTER
Level 1.
Tools required: Cleaning brush, 1" or 2" medium bristle paint brush.
Parts required: Part Number 13031051830 Air Filter.
NOTE
Clean daily.
1. Close choke, remove wing nut, air cleaner cover and air filter.
2. Brush dust off filter and wash in suitable solvent.
3. Dry filter before reinstalling.
ADJUSTING CARBURETOR - GENERAL
Level 2.
Tools required: Screwdriver, Tachometer (P/N 99051130017).
Parts required: none.
NOTE
Do not adjust carburetor unless necessary. If you have difficultly,
see your ECHO dealer.
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 counterclockwise to stop.
2. Turn LO speed midway between stops.
3. Turn idle screw until tip of screw just touches throttle plate; then
turn three (3) turns clockwise.
B
C
A
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