Servicing The Spark Plugs - Toro 07277 Operator's Manual

Figure 35
1. Engine oil drain plug
6. Pour oil into the fill opening until the oil level is up
to the Full mark on the dipstick. Add the oil slowly
and check the level often during this process. Do
not overfill.
7. Install the oil fill cap and dipstick firmly in place.
Changing the Oil Filter
Replace the oil filter every 100 operating hours or yearly,
whichever occurs first.
1. Drain the oil from the engine; refer to Changing
the Oil.
2. Remove the existing oil filter (Figure 35).
3. Apply a light coat of clean oil to the new filter gasket.
4. Screw the new filter on until the gasket contacts the
mounting plate, then tighten the filter an additional
1/2 to 3/4 turn further. Do not overtighten.
5. Fill the crankcase with the proper type of new oil.
6. Start and run the engine to check for leaks.
7. Stop the engine and check the oil level. Add oil if
necessary.

Servicing the Spark Plugs

Replace the spark plugs after every 800 operating hours
or yearly, whichever occurs first, to ensure proper engine
performance and reduce the exhaust emission level.
Type: Champion RC 14YC (or equivalent)
Air Gap: 0.030 inch (0.762 mm)
Note: The spark plugs usually last a long time; however,
the plugs should be removed and checked whenever the
engine malfunctions.
1. Clean the area around the spark plugs so that foreign
matter cannot fall into the cylinder when the spark
plug is removed.
2. Engine oil filter
2. Pull the spark plug wires off of the spark plugs and
remove the plugs from the cylinder head.
3. Check the condition of the side electrode, center
electrode, and center electrode insulator to ensure
that there is no damage (Figure 36).
1. Center electrode insulator
2. Side electrode
Important: A cracked, fouled, dirty, or
malfunctioning spark plug must be replaced. Do
not sand-blast, scrape, or clean the electrodes by
using a wire brush because grit may eventually
release from the plug and fall into the cylinder.
The result is usually a damaged engine.
4. Set the air gap between the center and side electrodes
at 0.030 inch (0.762 mm) (Figure 36).
5. Install the correctly gapped spark plug and tighten
the plug to 18-22 ft-lb (24-30 N-m). If a torque
wrench is not used, tighten the plug firmly.
6. Install the spark plug wires.
30
Figure 36
3. Air gap (not to scale)