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GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
31
1. Remove engine cover (A). See “Cleaning Cooling System” pages
29 & 30 for step by step instructions.
2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
entering cylinder.
3. Remove spark arrestor screen cover (B), screen holder (C), gasket
(D) and screen (E) from muffler body.
4. Clean carbon deposits from screen and muffler components.
5. Replace screen if it is cracked, plugged or has holes burned
through.
6. Assemble components in reverse order.
CARBURETOR ADJUSTMENT
Level 2.
Tools required: Screwdriver, Tachometer (ECHO P/N 99051130017).
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli-
ance with California Emission Regulations. This carburetor does
not have acceleration and high speed adjustment needles. Do not
attempt to use carburetor adjustment procedures provided in the
Warranty/Emissions Booklet.
1. Check idle speed and reset if necessary. If a tachometer is avail-
able, idle speed screw (A) should be set to the specifications found
on page 13 "Specifications" of this manual. Turn idle screw (A)
clockwise to increase idle speed; counter clockwise to decrease idle
speed.
WARNING DANGER
When carburetor adjustment is completed, the cutting attachment
should not turn at idle, otherwise serious personal injury may
result.
B
C
D
E
A
A