POWER BLOWER 19

OPERATOR'S MANUAL

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 may be required for proper operation of this engine.

IMPORTANT

For engine operation above 2,000 feet, turn the high-speed needle lean (CW) until the engine runs between 7,000 and 8,000 RPM. Then turn the low-speed needle lean (CW) until the engine does not hesitate on acceleration.

For engine operation below 2,000 feet, turn the high-speed needle rich (CCW) until the engine runs between 7,000 and 8,000 RPM. Then turn the low-speed needle rich (CCW) until the engine does not hesitate on acceleration.

DONOTREMOVELIMITERCAPS!

Level2.

Tools required: Screwdriver,tachometer(EchoP/N99051130017)

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.

High (HI) Speed (C) Controls amount of fuel at full throttle

Before Adjustment

A

Check that:

•Air filter is clean and properly installed.

•Spark arrestor screen and muffler are free of carbon.

•Blower pipes are installed.

C

B