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 18.
Inspect the spark arrestor for breaks or holes. Re-
place if necessary. To purchase
spark arrestor contact BlackMax customer service at
1-800-726-5760.
Use a brush to remove carbon deposits from the spark
arrestor screen as needed.
DRAINING FUEL TANK/CARBURETOR
See Figures 19 - 21.
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 (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.
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.
MAINTENANCE
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 22.
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.
a replacement
Reinstall fuel lines to new fuel filter.
Pull on lines to make sure they are secured
Turn the fuel valve to the ON ( O ) position.
CHANGING ENGINE BATTERY CHARGE
CIRCUIT FUSE
See Figure 23.
NOTICE:
Do not use a higher rated fuse other than the specified
amperage. This could cause damage to the product.
Grip both sides of the plastic fuse holder and twist apart
to reveal the fuse and spring.
Insert new fuse and refasten the fuse holder by pushing
the two sides of the connector together and twisting to
secure.
NOTE: If spring came out of fuse holder when it was
opened, it should also be replaced inside the fuse holder
before securing.
TRANSPORTING
Turn the engine switch OFF (O). Disconnect any equip-
ment that is plugged into the generator.
Turn the fuel valve to the OFF ( O ) position.
Allow 30 minutes of "cool down" time before storing the
machine.
For security, insert the pins to secure the handles before
transporting.
Tilt the machine away from you until it balances on the
wheels, then roll the machine to the desired location.
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