Maintaining The Spark Plug; Replacing The Wheels; Storing The Product - Ryobi RLM53190SV Original Instructions Manual

Engine oil should be changed after every 25 hours of use.
Change the oil while the engine oil is still warm, but not hot.
This allows the oil to drain quickly and completely.
1. Remove the oil fill cap/dipstick.
2. Tip mower onto its side and allow oil to drain from the oil
fill hole into an approved container.
3. Place the product upright and refill with oil following the
instructions in the Adding/Checking Oil section.
NOTE: Used oil should be disposed of at an approved
disposal site. See your local oil retailer for more
information.

MAINTAINING THE SPARK PLUG

See figure 15.
The spark plug must be properly gapped and free of
deposits in order to ensure proper engine operation. To
check:
1. Remove the spark plug boot.
2. Clean any dirt from around base of the spark plug.
3. Remove the spark plug using a 13/16 in. spark plug
socket (not provided).
4. Inspect the spark plug for damage, and clean with a
wire brush before reinstalling. If the insulator is cracked
or chipped, spark plug should be replaced.
NOTE: Use the recommended E6RTC spark plug for
replacement.
5. Measure the plug gap. The correct gap is 0.71 mm -
0.79 mm. To widen the gap, if necessary, carefully bend
the ground (top) electrode. To lessen the gap, gently tap
the ground electrode on a hard surface.
6. Seat the spark plug in position; thread in by hand to
prevent cross-threading.
7. Tighten with wrench to compress the washer. If the
spark plug is new, use 1/2 turn to compress the washer
appropriate amount. If reusing an 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.
8. Reinstall the spark plug boot.
MAINTAINING THE DRIVE GEAR
See figure 16.
To ensure smooth operation of the wheels, the wheel
assembly should be cleaned before storage.
1. Remove the hub cap.
2. Remove the nut and the wheel and set aside.
3. Remove the dust cover, e-ring, washer, pins, and the
wheel gear. Clean any dirt from these items and the end
of the drive shaft by wiping with a dry cloth. If necessary,
rubbing alcohol may be used to remove any stubborn
dirt.
10
Do not lubricate any of the wheel components.
Lubrication may cause the wheel components to fail
during use, which could result in product damage and/
or serious personal injury to the operator.
4. Reinstall the wheel gear with the arrows facing the front
of the product. Reinstall pins, washer, e-rings, and dust
cover.
NOTE: Ensure the left gear and right gear are in their
correct location.
5. Reinstall the wheel and the nut. Tighten the nut to
secure.
6. Reinstall the hub cap.

REPLACING THE WHEELS

See figure 17.
Only use replacement wheels approved by the
manufacturer of the product. Using wheels that are
not approved by the manufacturer of the product is
hazardous and could result in serious personal injury.
1. Stop the engine and disconnect the spark plug wire.
Allow blade to come to a complete stop.
2. Remove the hub cap.
3. Remove the nut from the wheel axle, then remove the
wheel.
4. Replace with new wheel and reinstall nut to secure.

STORING THE PRODUCT

When storing the product for 30 days or more:
If using a fuel stabilizer, follow the stabilizer
manufacturer's directions to add stabilizer to petrol in
the fuel tank. Run the engine at least 10 minutes after
adding stabilizer to allow the stabilizer to reach the
carburetor.
Do not store the product with petrol in the tank inside a
building where fumes may reach an open flame or spark.
If not using a fuel stabilizer, allow the engine to run until
the product is completely out of petrol.
Once the engine has stopped, allow the blade to come
to a complete stop and disconnect the spark plug wire.
Turn the fuel valve to the closed position.
Turn the product on its side (with carburetor facing up)
and clean grass clippings that have accumulated on the
underside of the mower deck.
Clean the underside of the mower deck.
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