Replacing The Spark Plugs - Toro 07367 Operator's Manual

Every 200 hours
1. Raise the bed (if so equipped) and place the safety
support on the extended lift cylinder to hold up the
bed.
2. Remove the drain plug and let oil flow into a drain
pan (Figure 47). When the oil stops, install the drain
plug.
1. Engine oil drain plug
3. Remove the oil filter (Figure 48).
1. Engine oil filter
4. Apply a light coat of clean oil to the new filter seal
before screwing it on.
5. Screw the filter on until the gasket contacts the
mounting plate, then tighten the filter 1/2 to 2/3 of
a turn. Do not overtighten.
6. Add oil to the crankcase; refer to Checking the
Engine Oil Level.

Replacing the Spark Plugs

Service Interval: Every 400 hours
The spark plugs usually last a long time; however, the
plugs should be removed and checked whenever the
engine malfunctions or every 400 hours. Replace the
spark plugs to ensure proper engine performance and
reduce exhaust emission level.
Figure 47
Figure 48
The correct spark plug to use is a Champion RC 14YC
or NGK BPR 4ES.
The recommended air gap is 0.032 inch (0.81 mm).
1. Clean the area around the spark plugs so foreign
matter cannot fall into the cylinder when you remove
the spark plug.
2. Pull 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.
Important: A cracked, fouled, dirty, or
otherwise malfunctioning spark plug must
be replaced. Do not sand blast, scrape, or
clean 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.
1. Air gap at 0.032 inch (0.81 mm)
4. Set the air gap one each plug between the center and
side electrodes at 0.032 inch (0.81 mm).
5. Install the correctly gapped spark plugs and tighten
them to 18 to 22 ft-lb (24.5 to 29 N-m). If you
cannot use a torque wrench, tighten the plugs firmly.
6. Install the spark plug wires.
43
Figure 49