GRASS TRIMMER

OPERATOR'S MANUAL 19

Cylinder Exhaust Port

Level3.

IMPORTANT

The cylinder exhaust port must be inspected and cleaned of excess carbon every 3 months or 90 hours of operation in order to maintain this engine within the emissions durability period. ECHO strongly recommends that you return your unit to your ECHO dealer for this important maintenance service.

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.

Level2.

Tools required: Screwdriver,tachometer(EchoP/N99051130017)

Parts required: None.

NOTE

Do not adjust carburetor unless necessary. If you have difficulty, see your ECHO dealer.

Adjustment Screws

Idle Speed (A)

Controls throttle opening at idle.

B

 

 

Low(LO)Speed(B)

Controls amount of fuel at low speed and

C

 

supplementary fuel for smooth progression from

 

 

idle to high speed.

 

High (HI) Speed (C)

Controls amount of fuel at full throttle

 

A