Operation Manual

ADJUSTMENT OF IDLE SPEED

When it is necessary to adjust the idle speed, perform it by the carburetor adjusting screw.

CHECKUP OF IDLE SPEED

Set the idle speed to 3,000 min –

-1

If it is necessary to change the idle speed, use a phillips head screw driver on

the screw illustrated on the right.

To increase the idle speed, turn the adjusting screw clockwise. –

To reduce the idle speed, turn the adjusting screw counterclockwise.

The carburetor is factory adjusted. However, after several use the idle speed –

need to be re-adjusted.

(1)

(2)

STOPPING

1) Release the throttle lever (2) fully, and when the

engine rpm has lowered, set the I-O switch (1)

to STOP the engine will now stop.

2) The cutting tool continues to rotate a while

after stopping the engine. Wait until it stops

completely.

STOP

EM4350UH

EM4351UH

(1)

(2)

EM4350LH

(1)

(2)

PREVENTION FROM CARBURETOR ICING

CAUTION: When environmental temperature is higher than 10°C, always

return the shutter to normal (sun mark) setting. Otherwise the

engine may be damaged by overheating.

When the environmental temperature is low and humidity is high, water vapor

may freeze inside the carburetor and the engine drives unsteadily (carburetor

icing). Change the setting of the shutter as follows if necessary.

1. Remove the screw (1).

2. Change the direction of the shutter (2) as follows:

− Environment temperature is higher than 10°C: Set the shutter in normal

position (sun mark).

− Environment temperature is equal or lower than 10°C: Set the shutter in

anti-icing position (snow mark).

3. Tighten the screw.