Lubricating The Hex Shaft; Replacing The Spark Plug - Toro 37779 Operator's Manual

Lubricating the Hex Shaft

Service Interval: Yearly—Lubricate the hex shaft.
Lightly lubricate the hex shaft yearly with automotive engine
oil (Figure 44).
1. Hex shaft
2. Steel friction pulley
Important: Do not get oil on the rubber wheel or the
steel friction pulley because the traction drive will slip
(Figure 44).
1. Drain the gasoline from the fuel tank.
2. Tip the machine forward onto its auger housing and
block it so that it cannot fall.
3. Remove the back cover
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1. Screws
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.
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Figure 44
3. Rubber wheel
(Figure 45).
Figure 45
9. Install the back cover and return the machine to the
operating position.

Replacing the Spark Plug

Service Interval: Every 100 hours—Replace the spark plug.
WARNING
Replacing the spark plug while the engine is hot
can result in burns.
Wait until the engine is cool to replace the spark
plug.
Use a Toro spark plug or equivalent (Champion® RN9YC or
NGK BPR6ES).
1. Remove the boot
1
1. Spark plug boot
1
2. Clean around the base of the spark plug.
3. Remove and discard the old spark plug.
Note: You will need a ratchet wrench extension to
remove the spark plug.
4. Set the gap between the electrodes on a new spark plug
at 0.030 inch (0.76 mm)
23
(Figure 46).
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Figure 46
Figure 47
(Figure 48).
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