Fuel System Maintenance - Toro 38701 Operator's Manual

Spark-plug gap: 0.76 mm (0.030 inch)
1. Disconnect the spark-plug wire from the terminal
of the spark plug
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
30).
Important:
Replace a cracked, fouled, or
dirty spark plug. Do not clean the electrodes,
because grit entering the cylinder can
damage the engine.
Figure 30
1. Ground electrode
2. Center electrode
5. Check the spark-plug gap with a wire gauge
(Figure 30).
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 torque 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
Service Interval: Yearly or before storage
1. Locate the drain bolt that is in the side port of
the carburetor bowl
(Figure 22).
3. Insulator
4. Spark-plug gap 0.76 mm
(0.030 inch)
(Figure 31).
(Figure
1. Bowl-retaining screw
2. Align the equipment that you will use to collect
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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:
from carburetor.
22
Figure 31
2. Drain bolt
Do not remove the bowl-retaining screw
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