Weed Eater MX557 Instruction Manual page 9

Screwdrive___
3. While holding the screwdriver in position,
remove trimmer head by turnh_g clock-
wise.
4. Thread replacement trimmer head onto
the shaft by turning counterclockwise.
Tighten until secure.
5. Remove the screwdriver.
CARBURETOR ADJUSTMENT
WARNING: Keep others away when
maMng idle speed adjustments. The trimmer
head will be spinning during this procedure.
Wear your protective equipment and observe
all safety precautions.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if you
notice any of the foilowh_g conditions:
• Engine will not idle when the throttle is
released.
Make adjustments with the unit supported so
the cutting attachment is off the ground and
will not make contact with any object. Hold
the unit by hand while running and making ad-
justments. Keep all parts of your body away
from the cutting attachment and muffler.
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without stalling (idle speed too slow).
• Turn idle speed screw clockwise to increase
engine speed if engine stalls or dies.
• Turn idle speed screw counterclockwise to
decrease engine speed.
idle Speed Screw
Air Filter Cover
If you require further assistance or are unsure
about performing this procedure, contact an
authorized service dealer or call
1-800-554-6723.
Z_
aWARNING:
Perform the following
steps after each use:
• Allow engine to cool before storing or trans-
porting.
• Store unit and fuel in awell ventilated area
where fuel vapors cannot reach sparks or
open flames from water heaters, electric
motors or switches, furnaces, etc.
• Store unit with all guards in place. Position
unit so that any sharp object cannot acci-
dentally cause injury.
• Store unit and fuel well out of the reach of
children.
SEASONAL STORAGE
Prepare unit for storage at end of season or if
it will not be used for 30 days or more.
If your unit is to be stored for a period of time:
• Clean the entire unit before lengthy
storage.
• Store in a clean dry area.
• Lightly oil external metal surfaces.
FUEL SYSTEM
Under FUELING ENGINE in the OPERA-
TION section of this manual, see message la-
beled IMPORTANT regarding the use of ga-
sohol in your engine.
Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits
during storage. Add stabilizer to the gasoline
in the fuel tank or fuel storage container.
Follow the mix instructions found on stabilizer
container. Run engine at least 5 minutes after
adding stabilizer.
HELPFUL TIP I
During storage of your gas/ I
_.#t_J_,_ oil mixture, the oil will sepa_ I
_ rate from the gas. I
m_] We recommend that you I
_j_ shake the gas can weekly
I
to insure proper blending of
the gas and oil.
ENGINE
• Remove spark plug and pour 1 teaspoon of
40:1,2-cycle engine oil (air cooled) through
the spark plug opening. Slowly pull the
starter rope 8 to 10 times to distribute oil.
• Replace spark plug with new one of recom-
mended type and heat range.
• Clean air filter.
• Check entire unit for loose screws, nuts,
and bolts. Replace any damaged, broken,
or worn parts,
• At the beginning of the next season, use
only fresh fuel having the proper gasoline to
oil ratio.
OTHER
• Do not store gasoline from one season to
another.
• Replace your gasoline can if it starts to rust.