Replacing The Spark Plug; Fuel System Maintenance; Replacing The Fuel Filter - Toro 07390 Workman HDX-Auto Operator's Manual

Replacing the Spark Plug

Service Interval: Every 400 hours
Spark plug type: Champion RC14YC
Air gap: 0.76 mm (0.030 inch)
1. Clean the area around the spark plug so foreign matter
cannot fall into the cylinder when you remove the
spark plug.
2. Pull wires off the spark plug 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 and
damaged the engine.
1 2
Figure 56
1. Side electrode
2. Center electrode
4. Set the air gap (Figure
electrodes at 0.81 mm (0.032 inch).
5. Install the correctly gapped spark plug and tighten
them to 24.5 to 29 N-m (18 to 22 ft-lb).
Note: If you cannot use a torque wrench, tighten the
plug firmly.
6. Install the spark-plug wire.
(Figure 56).
3 4
G019300
3. Insulator
4. Air gap at 0.76 mm (0.030
inch)
56) between the center and side
Fuel System
Maintenance

Replacing the Fuel Filter

Service Interval: Every 400 hours
1. Raise the bed (if so equipped) and install the bed safety
support onto the extended lift cylinder to hold up the
bed; refer to Raising the Cargo Box (page 19)
Using the Bed Safety Support (page
2. Unplug the wiring harness connectors from the fuel
pump (Figure 57).
3. Loosen the hose clamp and disconnect the fuel line
from the fuel pump cap
1. Fuel pump
2. Hose clamp
4. Remove the fuel-pump cap by unthread it from the top
of the fuel tank
Important: Do not allow the fuel pump assembly
to rotate during the removal process. If the pump
rotates, it can result in damage to the float arm
assembly.
5. Remove the fuel pump assembly and fuel filter from
the tank (Figure
6. Remove the clamp securing the fuel filter hose to the
fuel pump fitting
7. Remove the hose from the fitting
8. Insert the new hose clamp onto the new fuel filter hose.
9. Insert the hose onto the fuel pump and secure the
clamp.
10. Insert the assembly into the fuel tank and tighten the
cap to 20 to 22 N-m (175 to 200 in-lb).
Note: Note: Verify that the float arm does not contact
the fuel tank walls at any point through the full range
of motion.
42
36).
(Figure 57).
Figure 57
3. Fuel line/fuel filter
(Figure 57).
57.
(Figure 57).
(Figure
and
57).