Fuel System Maintenance; Replacing The Fuel Filter - Toro 41177 Multi-Pro 1250 Operator's Manual

4. Clean around the spark plugs to prevent dirt
from falling into the engine and potentially
causing damage.
5. Remove the spark plugs and metal washers.
Figure 52
1. Spark plug wire
Checking the Spark Plugs
1. Look at the center of the spark plugs
(Figure 53).
If you see a light brown or gray coating on the
insulator, the engine is operating properly. A
black coating on the insulator usually means
the air cleaner is dirty.
Important: Do not clean the spark
plugs. Always replace a spark plug when it
has a black coating, worn electrodes, an
oily film, or cracks.
2. Check the gap between the center and side
electrodes (Figure 53) and bend the side
electrode, if the gap is not correct.
Figure 53
1. Center electrode insulator
2. Side electrode
2. Spark plug
3. Air gap (not to scale)
Installing the Spark Plugs
1. Install the spark plugs and metal washers.
2. Tighten the spark plugs to 18 to 22 ft-lb (24.4
to 29.8 N⋅m).
3. Push the wires onto the spark plugs (Figure 52).
4. Close and latch the seat.
Fuel System
Maintenance

Replacing the Fuel Filter

Replace the fuel filter after every 100 operating
hours.
1. Set the parking brake, stop the pump, stop the
engine, and remove the ignition key.
2. Release the latch on the back of the seat and
lift the seat forward.
3. Clamp off the hose on either side of the fuel
filter to prevent gas from pouring out of the
hoses when you remove the filter.
4. Place a drain pan under the filter.
5. Squeeze the ends of the hose clamps together
and slide them away from the filter (Figure 54).
6. Remove the filter from the fuel lines.
Figure 54
1. Hose clamp
2. Fuel line
7. Install a new filter and move the hose clamps
close to the filter.
Ensure that the flow direction arrow points
toward the engine.
48
3. Filter
4. Flow direction arrow