Servicing The Spark Plug; Checking The Spark Arrester (If Equipped) - Toro 23510 Operator's Manual

Changing the Engine Oil
WARNING
Oil may be hot after the engine has been run, and
contact with hot oil can cause severe personal injury.
Avoid contacting the hot engine oil when you drain
it.
1. Disengage the cutting blades, stop the engine, turn off
the engine switch, and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug.
3. Raise the front wheels 5 to 8 centimeters (2 to 3 inches)
off the ground, and place a pan under the drain plug
to catch the oil.
4. Remove the drain plug
1
2
Figure 21
1. Dipstick
2. Drain plug
5. When the oil has drained completely, lower the front
wheels to the ground, replace the drain plug, and
torque the plug to 18 N-m (13 ft-lb).
Note: Dispose of the used oil at a certified recycling
center.
6. Remove the dipstick, and slowly pour oil into the fill
hole until the oil pours out of the fill hole.
7. Replace and secure the dipstick.
8. Wipe up any spilled oil.
9. Connect the wire to the spark plug.

Servicing the Spark Plug

Service Interval: Every 100 hours—Inspect and adjust the
spark plug; replace it if necessary.
Every 200 hours—Replace the spark plug.
Use an NGK BR6HS spark plug or equivalent.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug.
3. Clean around the spark plug.
4. Remove the spark plug from the cylinder head.
(Figure 21).
G021787
Important: Replace a cracked, fouled, or dirty
spark plug. Do not clean the electrodes, because
grit entering the cylinder can damage the engine.
5. Set the gap on the plug to 0.6 to 0.7 mm (0.024 to
0.028 inch); refer to
1. Side electrode
2. Center electrode insulator
3. Air gap—0.6 to 0.7 mm (0.024 to 0.028 inch)
6. Carefully install the spark plug by hand (to avoid cross
threading) until it is hand tight.
7. Tighten the spark plug an additional 1/2 turn if it is
new; otherwise, tighten it an additional 1/8 to 1/4 turn.
Important: A loose spark plug can become very
hot and can damage the engine; overtightening a
spark plug may damage the threads in the cylinder
head.
8. Connect the wire to the spark plug.
Checking the Spark Arrester
(if equipped)
Service Interval: Every 50 hours
Note: A spark arrester is available as an option. If you
require a spark arrester, contact your Authorized Toro Service
Dealer.
Toro spark arresters are approved by the USDA Forestry
Service.
WARNING
If the engine has been running, the muffler will be
hot.
1. Stop the engine and wait for all moving parts to stop.
2. Wait for the muffler to cool.
3. Remove the spark arrester from the exhaust outlet
by removing the screws from the muffler cover and
exhaust deflector.
4. If there are any breaks or holes in the screen, replace
the spark arrester.
21
Figure 22.
Figure 22