Fuel System Maintenance - Toro 38700 Operator's Manual

Checking the Spark Plug
Service Interval: Every 100 hours
Spark plug type: Champion® RC12YC, Kohler® 12 132
02-S, or Koher 25 132 14-S (RFI compliant)
Spark-plug gap: 0.76 mm (0.030 inch)
1. Disconnect the spark-plug wire from the terminal of
the spark plug (Figure
2. Clean the area around the base of the spark plug.
3. Remove the spark plug from the cylinder head by
rotating the plug counterclockwise.
4. Examine the plug for wear and damage
Important: Replace a cracked, fouled, or dirty
spark plug. Do not clean the electrodes, because
grit entering the cylinder can damage the engine.
1 2
Figure 27
1. Ground electrode
2. Center electrode
5. Check the spark-plug gap with a wire gauge
Note: If necessary, adjust the gap to 0.76 mm (0.030
inch) by carefully bending the ground electrode.
6. Install the spark plug by threading it into the cylinder
head and torquing the plug to 20 N-m (14 lb-ft).
7. Connect the spark-plug wire to the terminal of the
spark plug.

Fuel System Maintenance

Draining the Fuel System
1. Locate the drain bolt that is in the side port of the
carburetor bowl (Figure
19).
(Figure 27).
4
3
G019300
3. Insulator
4. Spark-plug gap 0.76 mm
(0.030 inch)
(Figure
28).
1. Bowl-retaining screw
2. Align the equipment that you will use to collect the fuel
beneath the drain screw.
3. Remove the drain screw from the carburetor and allow
the fuel to drain from the fuel tank and the carburetor.
Note: Do not remove the bowl-retaining screw from
carburetor.
27).
1. Side port of the carburetor
bowl
4. Install the drain bolt into the side port of the carburetor.
22
Figure 28
2. Drain bolt
Figure 29
2. Drain bolt