Homelite UT9C5000D Manual Del Operador página 20

SPARK PLUG MAINTENANCE
See Figure 14.
The spark plug must be properly gapped and free of deposits
in order to ensure proper engine operation. To check:
 Remove the spark plug cap.
 Clean any dirt from around base of spark plug.
 Remove spark plug using wrench (not included).
 Inspect spark plug for damage, and clean with a wire
brush before reinstalling. If insulator is cracked or
chipped, spark plug should be replaced.
 Measure plug gap. The correct gap is 0.028−0.031 in.
(0.7-0.8 mm). To widen gap, if necessary, carefully bend
the ground (top) electrode. To lessen gap, gently tap
ground electrode on a hard surface.
 Seat spark plug in position; thread in by hand to prevent
cross-threading.
 Tighten with wrench to compress washer. If spark plug
is new, use 1/2 turn to compress washer appropriate
amount. If reusing old spark plug, use 1/8 to 1/4 turn for
proper washer compression.
NOTE: An improperly tightened spark plug will become
very hot and could damage the engine.
CLEANING THE EXHAUST PORT AND
MUFFLER
Depending on the type of fuel used, the type and amount of
lubricant used, and/or your operating conditions, the exhaust
port and muffler may become blocked with carbon deposits.
If you notice a power loss with your gas-powered products,
you may need to remove these deposits to restore perfor-
mance. We highly recommend that only qualified service
technicians perform this service.
SPARK ARRESTOR
See Figures 15 - 16.
The spark arrestor must be cleaned or replaced every 50
hours or yearly to ensure proper performance of your product.
Spark arrestors may be in different locations depending on
the model purchased. Please contact your nearest service
dealer for the location of the spark arrestor for your model.
To clean the spark arrestor:
 Remove the four hex head bolts that secure the muffler
outlet cover plate.
 Remove the heat shield.
MAINTENANCE
 Remove the screw that secures the muffler outlet cover
and spark arrestor.
 Pull the spark arrestor out of the muffler outlet.
 Clean the spark arrestor with a wire brush.
 Reinstall the muffler outlet cover and spark arrestor, and
tighten the screw.
 Reinstall the shield and the four hex head screws. Tighten
the screws securely.
DRAINING FUEL TANK/CARBURETOR
See Figures 17 - 18.
To help prevent gum deposits in the fuel system, drain the
fuel from the tank and carburetor before storing.
DRAINING THE FUEL TANK
 Turn the engine switch OFF ( O ).
 Turn the fuel valve to the OFF position.
 Remove the fuel line from the petcock by squeezing the
ends of the retaining clip and sliding the fuel line off.
 Install one end of a drain line over the petcock, and place
the other end in a fuel container large enough to catch
the fuel being drained from the tank.
 Turn the fuel valve to the ON position.
 When the fuel has drained from the tank, close the fuel
valve and reinstall fuel line on petcock.
DRAINING THE CARBURETOR
 Turn the engine switch OFF ( O ).
 Turn the fuel valve to the OFF position.
 Position a suitable container under the carburetor drain
screw to catch fuel; loosen the screw.
 Allow fuel to drain completely into container.
 Retighten drain screw.
NOTE: Consult hazardous waste management guidelines in
your area for the proper way to dispose of used fuel.
TRANSPORTING
 Turn engine switch OFF ( O ).
 Turn the fuel valve to the OFF position.
 Make sure engine and exhaust of unit is cool.
 Empty the fuel tank.
 Do not drop or strike unit or place under heavy objects.
Page 16 — English