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GRASS TRIMMER
OPERATOR'S MANUAL
21
EXHAUST SYSTEM
Spark Arrestor Screen
Level 2.
Tools Required: Cross Head Screwdriver. Soft metal brush.
Parts Required: Screen P/N 14586240630, Gasket Lid P/N 14586642031
1. Remove engine cover, see "Cooling System Cleaning" pages 18 - 20
for step by step instructions.
2. Remove screen cover (A), holder (B) and gasket (C) from muffler
body.
3. Clean carbon deposits from screen (D) and muffler components.
4. Replace screen if it is cracked, plugged or has holes burned
through.
5. Assemble components in reverse order.
CARBURETOR ADJUSTMENT
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel
break-in before carburetor adjustments can be made. During the break-in
period your engine performance will increase and exhaust emissions will
stabilize. Idle speed can be adjusted as required.
High Altitude Adjustment
High altitude adjustment is not required for proper operation of this
engine.
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 emission regulations. In addition, the carburetor is
equipped with a HI needle adjustment limiter that prevents settings
outside acceptable limits.
1. Before adjusting the carburetor, clean or replace the air filter and
spark arrestor screen.
2. Trimmer line must be extended to the cut-off knife.
A
B
C
D