Ryobi RY907022FI Operator's Manual page 21

 Inspect spark plug for damage, and clean with a wire
brush before reinstalling. If insulator is cracked or
chipped, spark plug should be replaced. For replacement
spark plug, see Product Specifications earlier in this
manual or the accompanying engine manual, if applicable.
 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.
 Reinstall the spark plug cap.
 Reinstall the engine cover. Tighten screws to secure.
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.
NOTICE:
This product is equipped with a spark arrestor that has
been evaluated by the USDA Forest Service; however,
product users must comply with Federal, State, and local
fire prevention regulations. Check with appropriate au-
thorities. Contact customer service or a qualified service
center to purchase a replacement spark arrestor.
 Inspect the spark arrestor for breaks or holes. Clean or
replace if necessary.
 Use a brush (not provided) to remove carbon deposits from
the spark arrestor screen as needed.
DRAINING FUEL TANK
See Figures 19 - 20.
To help prevent gum deposits in the fuel system, drain the fuel
from the tank before storing.
 Turn the engine switch OFF ( O ).
 Turn the fuel valve to the OFF (O ) position.
 Remove the fuel line from the hose barb by squeezing the
end of the retaining clip and sliding the fuel line off.
MAINTENANCE
NOTE: Make sure you are removing the fuel line that runs
between the fuel valve and the carburetor, NOT the line that
runs between the fuel valve and the fuel tank.
 Place the fuel line with fuel valve 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 hose barb.
REPLACING FUEL FILTER
See Figure 21.
Occasionally the fuel filter may become clogged and need
to be replaced. To purchase a replacement fuel filter, contact
customer service or a qualified service center.
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.
 Drain the fuel tank completely.
 Remove both fuel lines from the old fuel filter by squeezing
the ends of the retaining clips and sliding the fuel lines off.
 Reinstall fuel lines to the new fuel filter.
 Pull on lines to make sure they are secured
 Turn the fuel valve to the ON ( I ) position.
TRANSPORTING
 Turn the engine switch OFF ( O ).
 Disconnect any equipment that is plugged into the generator.
 Verify the fuel valve is in the OFF ( O ) position.
 Allow 30 minutes of "cool down" time before storing the
machine. Make sure engine and exhaust of unit are cool.
 For security, insert the pins to secure the handles before
transporting.
 Tilt the machine toward you until it balances on the wheels,
then roll the machine to the desired location.
 If transporting in a vehicle, drain the fuel tank, close fuel
valve, and securely restrain the generator.
 Provide a plastic sheet or absorbent pad below the generator
to catch any drips of fuel or lubricant.
CHECK ENGINE INDICATOR LIGHT
See Figure 22.
The LED indicator light in the control panel will illuminate to indi-
cate a fault in the engine's fuel injection system. Please contact
customer service or a qualified service center for assistance.
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.
 Open the fuse holder.
Page 17 — English