Ryobi RYi4022X Operator's Manual page 21

SPARK PLUG REPLACEMENT
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 spark plug wrench or socket.
 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 0.024−0.028 in.
(0.60-0.70 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.
 Reintall the spark plug cap.
SPARK ARRESTOR
See Figure 15.
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.
The spark arrestor must be cleaned or replaced every 50
hours or yearly to ensure proper performance of your prod-
uct. Spark arrestors may be in different locations depending
on the model purchased. Contact customer service or a
qualified service center for the location of the spark arrestor
for your model.
To clean the spark arrestor:
 Loosen the screw on the spark arrestor cap. Remove the
cap and spark arrestor.
 Use a brush (not provided) to remove carbon deposits
from the spark arrestor.
 Replace the spark arrestor and cap, tighten screw securely.
MAINTENANCE
DRAINING FUEL TANK/CARBURETOR
See Figure 16.
To help prevent gum deposits in the fuel system, drain the
fuel from the tank and carburetor before storing.
DRAINING THE FUEL TANK
 Place the easy start lever in the OFF position.
 Remove the fuel line from the hose barb by squeezing
the ends of the retaining clip and sliding the fuel line off.
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.
 Install one end of a drain line (not provided) over the hose
barb, and place the other end in a fuel container large
enough to catch the fuel being drained from the tank.
 Place the easy start lever in the RUN position.
 When the fuel has drained from the tank, place the easy
start lever in OFF position and reinstall fuel line securely
onto the hose barb.
DRAINING THE CARBURETOR
 Place the easy start lever in 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
 Verify the easy start lever is in the OFF position.
 Allow 30 minutes of "cool down" time before transporting
the machine. Make sure engine and exhaust of unit are
cool.
 Do not drop or strike unit or place under heavy objects.
 If transporting in a vehicle, drain the fuel tank, close the
fuel valve, and securely restrain the generator.
 Provide a plastic sheet or absorbent pad below the gen-
erator to catch any drips of fuel or lubricant.
17 — English