Toro Power Clear 621QZE Operator's Manual page 15

4. Remove the 4 screws that secure the shroud
(Figure 34).
1. Screw (4)
2. Shroud
5. Remove the fuel tank cap.
6. Remove the shroud (Figure 34).
7. Install the fuel tank cap.
8. Disconnect the wire from the spark plug.
9. Clean around the spark plug.
10. Remove the spark plug from the cylinder head.
Important: Replace a cracked, fouled, or
dirty spark plug. Do not clean the electrodes
because grit entering the cylinder can damage
the engine.
11. Set the gap on the plug to 0.030 inch (0.76 mm)
(Figure 35).
Figure 34
3. Spark plug
4. Spark-plug wire
1. Center electrode insulator
2. Side electrode
12. Install the spark plug and torque it to 20–22 ft-lb
(27–30 N-m).
13. Connect the wire to the spark plug.
Note: Ensure that the breather tube is routed above
the spark plug wire as shown in Figure 36.
1. Breather tube
14. Remove the fuel tank cap.
15. Install the shroud with the screws you removed in
step 4.
Note: Ensure that the upper and lower shrouds fit
together in the side grooves.
16. Install the fuel tank cap.
17. Install the chute seal, the discharge chute, and the
discharge chute handle onto the machine using the
hardware you removed in step 3.
Note: The small screw goes through the small hole
in the chute seal at the front of the discharge chute
opening.
15
Figure 35
3. Air gap (not to scale)
Figure 36
2. Carburetor drain bolt