Replacing The Spark Plug - Toro 38624 Operator's Manual

3. Remove the back cover (Figure 45).
1. Back cover
4. Move the speed selector lever to Position R2.
5. Dip your finger in automotive engine oil and lightly
lubricate hex shaft.
6. Move the speed selector lever to Position 6.
7. Lubricate the other end of the hex shaft.
8. Move the speed selector lever forward and rearward
a few times.
9. Install the back cover and return the snowthrower
to the operating position.

Replacing the Spark Plug

Service Interval: Every 100 hours—Replace the spark
plug.
Use a Champion QC12YC or equivalent spark plug.
Note: To access the spark plug, you must first remove
the upper snow hood (Figure 46).
1. Choke knob
2. Upper snow hood
1. Remove the choke knob and the ignition key
(Figure 46).
2. Remove the 2 screws that secure the upper snow
hood to the snowthrower (Figure 46).
Figure 45
Figure 46
3. Ignition key
4. Screw (2)
3. Slowly remove the upper snow hood, ensuring that
the primer bulb hose and the ignition wire remain
connected.
4. Remove the bracket thumb screw and the bracket
(Figure 47)..
1. Spark-plug wire
2. Bracket
5. Clean around the base of the spark plug (Figure 47).
6. Remove and discard the old spark plug.
Note: You will need a ratchet wrench extension to
remove the spark plug.
7. Set the gap between the electrodes on a new spark
plug at 0.030 inch (0.76 mm) (Figure 48).
1. 0.030 inch (0.76 mm)
8. Install the new spark plug and tighten it firmly.
9. Install the bracket with the thumb screw that you
removed in step 1.
10. Ensure that the primer bulb hose and the ignition
wire are connected and clear of the carburetor
bracket.
11. Secure the upper snow hood to the snowthrower
with the 2 screws that you previously removed.
22
Figure 47
3. Thumb screw
Figure 48