Toro 38637C, Operator'S Manual

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Figure 50
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 51).
Figure 51
1. Choke knob 3. Ignition key
2. Upper snow hood 4. Screw (2)
1. Remove the choke knob and the ignition key
(Figure 51).
2. Remove the 2 screws that secure the upper snow
hood to the snowthrower (Figure 51).
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 52).
Figure 52
1. Spark-plug wire
3. Thumb screw
2. Bracket
5. Clean around the base of the spark plug (Figure 52).
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 53).
Figure 53
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 4.
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.
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