Replacing The Spark Plugs; Fuel System Maintenance; Replacing The Fuel Filter; Fuel Lines And Connections - Toro Workman HD 07369 Operator's Manual

Replacing the Spark Plugs

Service Interval: Every 800 hours
The spark plugs usually last a long time; however, the
plugs should be removed and checked whenever the
engine malfunctions or every 800 hours. Replace the
spark plugs to ensure proper engine performance and
reduce exhaust emission level.
The correct spark plug to use is a Champion RC 12YC
or equivalent.
The recommended air gap is 0.040 inch (1 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.
Figure 37
1. Air gap at 0.040 inch (1 mm)
4. Set the air gap one each plug between the center and
side electrodes at 0.040 inch (1 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.
Fuel System
Maintenance

Replacing the Fuel Filter

Service Interval: Every 400 hours
1. Raise the bed (if so equipped) and place the safety
support on the extended lift cylinder to hold up the
bed.
2. Place a clean container under the fuel filter
(Figure 38).
1. Fuel filter
3. Loosen the R-clamp securing the filter to the frame.
4. Remove the clamps securing the fuel filter to the fuel
lines.
5. Install a new fuel filter to fuel lines with the clamps
previously removed. The filter must be mounted
so the arrow points toward the carburetor.
6. Tighten the R-clamp securing the filter to the frame.
7. Wipe up and spilled fuel.

Fuel Lines and Connections

Service Interval: Every 400 hours/Yearly (whichever
comes first)
Every 1,000 hours/Every 2 years
(whichever comes first)
Inspect the fuel lines and connections for deterioration,
damage, or loose connections.
38
Figure 38