24
Operator’s Manual
SERVICE
3. Clean any dirt from around base of spark plug.
4. Remove spark plug using spark plug wrench or socket.
5. 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.
6. Measure plug gap. The correct gap is 0.027−0.031 in.
(0.70-0.80 mm). To widen gap, if necessary, carefully
bend the ground (top) electrode. To lessen gap, gently
tap ground electrode on a hard surface.
7. Seat spark plug in position; thread in by hand to prevent
cross-threading.
8. 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. Spark Plug Torque: 28N.m
NOTE: An improperly tightened spark plug will become
very hot and could damage the engine.
9. Reintall the spark plug cap.
10. Replace the access door and reinstall the screws.
SPARK ARRESTOR
NOTICE: This product is equipped with a spark arrestor
that has been evaluated by the USDA Forest Service; how-
ever, product users must comply with Federal, State, and
local fire prevention regulations. Check with appropriate
authorities. 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 depend-
ing 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:
1. Loosen the screw on the spark arrestor cap. Remove the
cap and spark arrestor.
2. Use a brush (not provided) to remove carbon deposits
from the spark arrestor.
3. Replace the spark arrestor and cap, tighten screw securely.
DRAINING FUEL TANK
To help prevent gum deposits in the fuel system, drain the
fuel from the tank and carburetor before storing.
1. Turn the knob to OFF position.
2. Remove the fuel tank cap and strainer.
3. Extract/siphon the fuel from the fuel tank into an approved
gasoline container. Reinstall the fuel strainer and fuel cap.
4. Start the engine and let it run until it stops by running out
of fuel completely.
5. Remove the screws from the access panel and set aside.
