Typical single groove pulley for the PTO
Typical multiple groove pulley for the PTO
The belt driven PTO can run items such as bildge pumps, refrigerator pumps, or a second alternator.
Loads up to 8 kW (11 hp) can be driven by the belt drive. The side force can not be more than 113 mm (4.45 inch) from the front face of the cylinder block. The maximum power should not exceed 2 kW (2.7 hp) per belt.
Illustration 1 shows a single groove pulley with an outside diameter of 143 mm (5.6 inch).
Illustration 2 shows a multiple groove pulley with the following diameters: Two pulleys with a 195 mm (7.7 inch) outside diameter, One pulley with a 152 mm (6.0 inch) outside diameter and One pulley with a 106 mm (4.2 inch) outside diameter