Toro 38720 Operator's Manual page 16

Figure 19
1. Oil-drain plug
3. After draining the used oil, return the machine to
the operating position.
4. Install the oil-drain plug and tighten it securely.
5. Clean around the oil-fill cap.
6. Use Figure 20 to select the best oil viscosity for
the outdoor temperature range expected:
Figure 20
g030122
g013802
14
Figure 21
g030449
g214777