Makita EM4350RH Instruction Manual page 18

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
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.
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.
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(1)
(2)