Servicing The Spark Plug - Toro 22297 Operator's Manual

2. Stop the engine and wait for all moving parts to stop.
3. Disconnect the wire from the spark plug.
4. Drain the gasoline from the fuel tank.
5. Drain the engine oil; refer to
(page 17).
6. Place a rag under the oil filter
oil that may leak out as you remove the oil filter.
Figure 22
1. Oil filter
7. Remove the oil filter.
8. Use your finger to coat the gasket on the new oil filter
with oil (Figure 26).
Figure 23
1. Gasket
9. Install the new filter by rotating it clockwise until the
seal contacts the filter housing, then rotate the filter an
additional 3/4 turn by hand.
10. Fill the crankcase to the Full line on the dipstick with
fresh oil; refer to 3 Filling the Crankcase with Oil (page
9).
11. Connect the wire to the spark plug.
12. Run the engine for about 3 minutes.
13. Stop the engine, wait for all moving parts to stop, and
check for oil leakage around the filter.
Changing the Engine Oil
(Figure 22) to catch any
14. Add oil to compensate for the oil in the oil filter. Refer
to Checking the Engine-Oil Level (page
15. Recycle the used oil filter properly.

Servicing the Spark Plug

Service Interval: Every 100 hours—Inspect, clean, and
adjust the spark plug gap; replace the
spark plug if necessary.
Use an NGK BPR5ES 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.
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 0.76 mm (0.030 inch); refer
to Figure 24.
1. Center-electrode insulator
2. Side electrode
3. Air gap (not to scale)
6. Carefully install the spark plug by hand (to avoid cross
threading) until it is hand tight.
7. Tighten the spark plug to 23 N-m (2.3 kgf-m, 17 ft-lb).
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.
18
11).
Figure 24