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14
CARBURETOR ADJUSTMENT
A dirty air cleaner will cause the engine to run improperly
and/or smoke excessively. Be sure the air cleaner is clean
before adjusting the carburetor. Never make unnecessary
adjustments to the carburetor. The carburetor was set at the
factory to operate efficiently under most applications. How-
ever, if adjustments are required, we recommend you contact
a competent repairman. If you feel that you are competent to
make carburetor adjustment proceed as follows:
● Turn the mixture adjusting screw (See FIG .3-
SERV.&ADJ.)
clockwise to close.
IMPORTANT: TIGHTEN THE ADJUSTING SCREW WITH
YOUR FINGERS TO PREVENT DAMAGE
TO THE CARBURETOR OR ADJUSTING
SCREW.
● Turn the mixture adjusting screw counterclockwise
(open)1-3/8 turns.
● Start the engine and let it warm up approximately 3 to 5
minutes. Do not adjust the carburetor when the engine is
cold.
● If the engine falters or stops after the choke lever is moved
to the (OFF) position, open the mixture adjusting screw an
additional 1/8 turn counterclockwise.
● With the engine running, release the throttle control (idle
position) to make the mixture adjustments.
a. Turn the mixture adjusting screw (See FIG. 3
SERV.&ADJ)slowly clockwise until the engine falters.
Note this location.
b. Turn the mixture adjusting screw slowly counterclock-
wise until the engine starts to sputter. Note this location.
c. Turn the mixture adjusting screw clockwise until it is
halfway between the first position where the engine
faltered and the second position where the engine started
to sputter.
● The idle speed may need to be adjusted after making the
mixture adjustment. If the tines do not turn when the
engine is running and the throttle control is released, the
idle speed will not need adjusting. If the tines turn when
thethrottlecontrol is released, do the following:
a. Have someone hold the tiller/cultivator back on the depth
bar with the tines off the ground.
b. Start the engine.
c. With the throttle in the released (idle) position, turn the
idle speed adjusting screw counter-clockwise until the
tines stop rotating.
ENGINE SHOWN WITH AIR CLEANER REMOVED
MIXTURE
ADJUSTING
SCREW
CARBURETOR
IDLE SPEED
ADJUSTING
SCREW
FIG. 3-
SERV&ADJ
SERVICE & ADJUSTMENTS
CAUTION: NEVER TAMPER WITH THE EN-
GINE GOVERNOR WHICH IS FACTORY SET
FOR PROPER ENGINE SPEED. OVER-
SPEEDING THE ENGINE ABOVE THE FAC-
TORY HIGH SPEED SETTING CAN BE DAN-
GEROUS. IF YOU THINK THE ENGINE GOV-
ERNED HIGH SPEEDS NEEDS ADJUST-
ING, CONTACT A COMPETENT REPAIR-
MAN WHICH HAS THE PROPER EQUIP-
MENT AND EXPERIENCE TO MAKE ANY
NECESSARY ADJUSTMENTS.
CAUTION: USE EXTREME CARE WHEN
MAKING ADJUSTMENTS THAT REQUIRE
THE ENGINE TO BE RUNNING. KEEP
HANDS, FEET, HAIR AND LOOSE CLOTH-
ING AWAY FROM ANY MOVING PART.