RIDGID RD907000P, Operator'S Manual

Page: 23 / 70

17 — English
MAINTENANCE
WARNING:
Do not change engine lubricant while it is hot.
Accidental contact with hot engine lubricant could
result in serious burns.

Reinstall the oil drain plug and tighten securely.

Refill with lubricant following the instructions in the
Checking/Adding Lubricant section. For amount of
lubricant needed to refill, see
Product Specifications
earlier in this manual or the accompanying engine manual,
if applicable.
 Reinstall the oil cap/dipstick.
NOTE: Used lubricant should be disposed of at an approved
disposal site. See your local oil retailer for more information.
SPARK PLUG MAINTENANCE
See Figure 20.
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 21.
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 or a qualified service center to purchase a
replacement spark arrestor.

Inspect the spark arrestor screen 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/CARBURETOR
See Figures 22 - 23.
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 ( O ) position.

Remove the fuel line by squeezing the ends of the retain-
ing clip with pliers and sliding the fuel line off.

Unwrap 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 ( I ) position.

When the fuel has drained from the tank, turn the fuel
valve
OFF ( O ). 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 ( O ) 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.
REPLACING FUEL FILTER
See Figure 24.
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