Toro 38172 - Replacing the Spark Plug; Emptying the Fuel Tank

14
930
2
1
3
Figure 12
1. Idler pulley
2. Idler spring
3. Notch
9. Lift up the idler pulley arm assembly, squeeze the belt
together, and route the belt under the idler pulley
(Fig. 12).
10. Install the belt cover and tighten the fasteners securely,
but do not overtighten them.
11. Connect the wire to the spark plug.
12. Install the control panel.
13. Insert the key in the switch.
Replacing the Spark Plug
Use a Champion CJ8Y or equivalent spark plug. Install a
new spark plug after every 100 operating hours.
1. Stop the engine and wait for all moving parts to stop.
2. Remove the key from the switch.
3. Remove the two screws that secure the control panel to
the housing (Fig. 13).
917
2
1
Figure 13
1. Screws 2. Control panel
4. Lift off the control panel and allow it to hang on the
recoil rope.
5. Disconnect the wire from the spark plug (Fig. 14).
918
1
Figure 14
1. Spark-plug wire
6. Remove the spark plug.
7. Examine the spark plug and replace it if it is cracked,
fouled, dirty, or if the electrodes are worn.
Important Do not clean the electrodes because grit
could enter the cylinder and damage the engine.
8. Set the gap on the new spark plug at 0.030 inch
(0.76 mm) as shown in Figure 15.
1
m3215
Figure 15
2. 0.030 in. (0.76 mm)
9. Install the spark plug by hand and then torque it to
15 ft-lb (20.4 N
.
m). If you do not have a torque wrench,
tighten the spark plug firmly.
10. Connect the wire to the spark plug.
11. Install the control panel.
12. Insert the key in the switch.
Emptying the Fuel Tank
1. Stop the engine and wait for all moving parts to stop.
2. Remove the key from the switch.
3. Remove the fuel tank cap and use a hand pump to pump
the fuel into an approved fuel container.
4. Start the engine and allow it to run until it stops. Repeat
this step two more times to ensure that the fuel tank and
the carburetor are empty.