Spark Plug Maintenance; Spark Arrestor - RIDGID RD906500P Série Manuel De L'opérateur

MAINTENANCE

SPARK PLUG MAINTENANCE

See Figure 19.
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 wrench (not included).
 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.
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 20.
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 authorities. Contact customer
service to purchase a replacement spark arrestor.
 Inspect the spark arrestor screen for breaks or holes.
Replace if necessary.
 Use a brush to remove carbon deposits from the spark
arrestor screen as needed.
DRAINING FUEL TANK/CARBURETOR
See Figures 21 - 22.
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 OFF ( O ).
 Turn the fuel valve to the OFF position.
 Remove the fuel line by squeezing the ends of the retain-
ing clip with pliers and sliding the fuel line off.
 Remove the flexible fuel line holder.
 Place the end of the fuel line into a suitable fuel container
large enough to catch the fuel being drained from the
tank.
 Turn the fuel valve to the ON position.
 When the fuel has drained from the tank, turn the fuel
valve OFF. Reinstall the fuel line holder, retaining clips,
and fuel line securely onto the filter.
DRAINING THE CARBURETOR
 Turn the engine OFF ( O ).
 Turn the fuel valve to 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.
17 — English