Belt Replacement - RIDGID GP80145SW Owner's Manual

MAINTENANCE
 Lift the edge of the air filter carefully and pull it out.
 Wash the air filter with warm, soapy water.
 Rinse and squeeze to dry.
 Put small amount of motor oil (SAE 30, or SAE 10W30) on
the filter sponge. Squeeze out the excess oil then reinstall
the air filter.
NOTE: Make sure the filter is seated properly inside the
cover. Installing the filter incorrectly will allow dirt to enter
the engine, causing rapid engine wear.
 Reinstall the air filter cover.
CHANGING THE ENGINE OIL
See Figure 21, page 22.
Replace the engine oil after the first 100 hours of operation
and every 100 hours following the first oil change.
 Turn off the air compressor.
 Place a suitable container underneath the drain hole to
collect used oil.
 Remove the drain plug with an adjustable wrench.
 When the used oil has drained, reinstall the drain plug
and tighten with the wrench.
 Remove the engine oil cap/dipstick.
 To refill, use a funnel to pour oil into the fill hole. Refill
only with 4-stroke engine oil (SAE 30 or SAE 10W30).
NOTE: Avoid refilling with too much oil. Ensure that the
level of the oil does not exceed the maximum reference
level on the dipstick. The recommended amount of oil for
refilling is 16 oz. (0.47 liters).
 Reinsert the oil cap/dipstick securely into the oil fill hole.
NOTE: Consult hazardous waste management guidelines in
your area for the proper way to dispose of used oil.
SPARK PLUG MAINTENANCE
See Figure 22, page 22.
The spark plug must be properly gapped and free of deposits
to ensure proper engine operation. To check:
 Turn off the air compressor.
 Remove the spark plug cap.
 Clean any dirt from around base of spark plug.
 Remove spark plug using an adjustable 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.
NOTE: If replacing, use the following recommended
spark plug or equivalent: Champion RL87YC.
 Measure plug gap. The correct gap is 0.023−0.027 in.
(0.6 mm - 0.7 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 an adjustable 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.
CHANGING THE PUMP OIL
See Figure 23, page 22.
 Turn off the air compressor.
 Raise the air compressor high enough to gain access to
the drain valve; securely position props underneath to
support.
NOTE: This tool is heavy. To avoid back injury, lift with
your legs, not your back, and get help when needed.
 Place a suitable container underneath the drain valve to
collect used oil.
 Loosen the pump oil cap/dipstick. Remove the oil drain
plug and drain the old oil.
NOTE: Drain the oil while the pump is still warm but not
hot. Warm oil will drain quickly and more completely.
 Replace the oil drain plug. Tighten securely.
 Remove the pump oil cap/dipstick.
 To refill, pour SAE40 pump oil into the fill hole.
NOTE: Avoid refilling with too much oil. Ensure that the
level of the oil does not exceed the MAX reference on the
dipstick. The recommended amount of oil for refilling is
8.5 oz. (251 ml).
 Replace pump oil cap/dipstick and tighten securely.
NOTE: Consult hazardous waste management guidelines in
your area for the proper way to dispose of used oil.

BELT REPLACEMENT

See Figures 24 - 27, page 22.
The air compressor is powered by a belt-driven motor.
Periodically check the belt for wear and replace it when
necessary. Proceed as follows when replacement is required:
 Turn off the air compressor and disconnect the spark plug
wire.
 Using an adjustable wrench, remove the bolts and nuts
securing the belt guard. Carefully lift the belt guard off
the air compressor and set aside.
 Allow the engine to cool. Loosen the engine bolts and
nuts securing the engine in place.
 Push the engine away from the wheel until there is enough
slack in the belt for it to be removed from around the pul-
leys.
 Place the new belt (grooves turned to the inside) around
the small pulley.
14 – English