Fuel System Maintenance; Servicing The Fuel System - Toro 30632 Operator's Manual

Checking the Spark Plugs
1. Look at the center of the spark plugs
Note:
If you see light brown or gray on the
insulator, the engine is operating properly. A
black coating on the insulator usually means
that the air cleaner is dirty.
2. If needed, clean the spark plug with a wire brush
to remove carbon deposits.
Figure 26
1. Side electrode
2. Center electrode insulator
Important:
Always replace the spark plugs
when it has worn electrodes, an oily film on
it, or has cracks in the porcelain.
3. Check the gap between the center and side
electrodes (Figure
Note:
Bend the side electrode
gap is not correct.
Installing the Spark Plugs
1. Install the spark plugs and the metal washer.
Ensure that the air gap is set correctly.
2. Tighten the spark plugs to 22 N∙m (16 ft-lb).
3. Install the spark-plug wire
(Figure
3. Air gap (not to scale)
26).
(Figure 26) if the
(Figure 26).
Fuel System
26).
Maintenance
DANGER
In certain conditions, fuel is extremely
flammable and highly explosive. A fire or
explosion from fuel can burn you and others
and can damage property.
Refer to Adding Fuel (page 11)
list of fuel related precautions.

Servicing the Fuel System

Draining the Fuel Tank
1. Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2. Shut off the engine, remove the key, and wait
g238425
for all moving parts to stop before leaving the
operating position.
3. Close the fuel-shutoff valve at the fuel tank
(Figure 27).
4. Squeeze the ends of the hose clamp together
and slide it up the fuel line away from the fuel
filter (Figure
5. Pull the fuel line off the fuel filter
6. Open the fuel-shutoff valve and allow the fuel to
drain into a fuel container or drain pan.
Note:
Now is the best time to install a new fuel
filter, because the fuel tank is empty; refer to
Replacing the Fuel Filter (page
7. Install the fuel line to the fuel filter.
Slide the hose clamp close to the valve to secure
the fuel line.
28
for a complete
27).
(Figure
29).
27).