Servicing The Spark Plugs; Remove Debris From The Engine - Toro 07050 Operator's Manual

5. When the oil has drained completely, replace the
plug.
Note: Dispose of the used oil at a certified recycling
center.
6. Place a shallow pan or rag under the filter to catch oil.
7. Remove the old filter and wipe the surface of the
filter adapter gasket.
8. Pour the new oil of the proper type through the
center hole of the filter. Stop pouring when the oil
reaches the bottom of the threads.
9. Allow a minute or two for the oil to be absorbed by
filter material, then pour off the excess oil.
10. Apply a thin coat of new oil to the rubber gasket
on the replacement filter.
11. Install the replacement oil filter to the filter adapter.
Turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the filter an
additional 1/2 turn. Do not over tighten.
12. Check the oil level; refer to
Checking the Engine Oil Level (page 13).
13. Slowly add additional oil to bring the level to the full
mark on the dipstick.
14. Replace the fill cap.

Servicing the Spark Plugs

Service Interval: Every 200 hours—Check the spark
plugs.
Ensure that the air gap between the center and side
electrodes is correct before installing each spark plug.
Use a spark plug wrench for removing and installing the
spark plugs and a gapping tool/feeler gauge to check and
adjust the air gap. Install new spark plugs if necessary.
Type: Champion RC12YC or equivalent. Air Gap: 0.03
inch (0.75 mm)
Removing the Spark Plugs
1. Stop the engine, set the parking brake, and remove
the key.
2. Pull the wires off of the spark plugs.
3. Clean around the spark plugs.
4. Remove both spark plugs and metal washers.
Checking the Spark Plugs
1. Look at the center of both spark plugs (Figure 20).
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means the air cleaner is dirty.
Important: Never clean the spark plugs. Always
replace the spark plugs when they have a black
coating, worn electrodes, an oily film, or cracks.
1. Center electrode insulator
2. Side electrode
2. Check the gap between the center and side electrodes
(Figure 20).
3. Bend the side electrode (Figure 20) if the gap is not
correct.
Installing the Spark Plugs
1. Thread the spark plugs into the spark plug holes.
2. Tighten the spark plugs to 20 ft-lb (27 N-m).
3. Push the wires onto the spark plugs.
Remove Debris from the
Engine
Service Interval: Every 100 hours
To ensure proper cooling, keep the grass screen, cooling
fins, and other external surfaces of the engine clean at
all times.
Every 100 hours of operation (more often under
extremely dusty, dirty conditions) remove the blower
housing and other cooling shrouds. Clean the cooling
fins and external surfaces as necessary. Make sure the
cooling shrouds are reinstalled.
Note: Operating the engine with a blocked grass
screen, dirty or plugged cooling fins, or cooling shrouds
removed, will cause engine damage due to overheating.
19
Figure 20
3. Air gap (not to scale)