Black Max BM903000A Operator's Manual page 19

 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 Figure 11.
 Inspect the spark arrestor for breaks or holes. Replace
if necessary. To purchase a replacement spark arrestor
contact BlackMax customer service at 1-800-726-5760.
To clean the spark arrestor:
 Remove the three hex head bolts that secure the muffler
outlet heat shield
 Remove the heat shield.
 Remove the screw that secures the spark arrestor.
 Pull the spark arrestor out of the muffler outlet.
 Clean the spark arrestor with a wire brush.
 Reinstall the spark arrestor and tighten the screw.
 Reinstall the heat shield and the three hex head bolts.
Tighten the bolts securely.
DRAINING FUEL TANK/CARBURETOR
See Figures 12 - 14.
To help prevent gum deposits in the fuel system, drain the fuel
from the tank and carburetor before storing. Before draining
the fuel tank and/or the carburetor be sure the engine is cool.
DRAINING THE FUEL TANK
 Turn the engine switch OFF ( O ).
 Turn the fuel valve to the OFF ( O ) position.
 If necessary, push the fuel valve knob through the genera-
tor housing and pull down slightly to gain access to the
petcock.
 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.
MAINTENANCE
 Turn the fuel valve to the ON ( l ) position.
 When the fuel has drained from the tank, close the fuel
valve and reinstall fuel line securely on petcock.
 If previously removed, reinstall fuel valve knob in genera-
tor housing. Push forward until knob snaps securely into
position.
DRAINING THE CARBURETOR
 Turn the engine switch OFF ( O ).
 Turn the fuel valve to the OFF ( O ) 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.
REPLACING FUEL FILTER
See Figure 15.
Occasionally the fuel filter may become clogged and need
replacing. To purchase a replacement fuel filter contact
BlackMax customer service at 1-800-726-5760.
NOTE: Fuel tank must be empty before replacing fuel filter.
Run unit until tank is empty, if needed, or inspect filter prior
to fill-up.
To replace:
 Turn the fuel valve to the OFF ( O ) position.
 Remove the fuel line from both sides of the filter by
squeezing the ends of the retaining clip with pliers.
 Slide the fuel line off.
 Replace with new fuel filter.
 Reinstall fuel lines to new fuel filter.
 Pull on lines to make sure they are secured
 Turn the fuel valve to the ON ( I ) position.
MOVING THE GENERATOR
 Turn the engine switch OFF. Disconnect any equipment
that is plugged into the generator.
 Turn the fuel valve to the OFF position.
 Allow 30 minutes of "cool down" time before storing the
machine.
 Tilt the machine away from you until it balances on the
wheels, then roll the machine to the desired location.
Page 15 — English