Two basic types of setups are direct drive and belt drive. Direct drive meaning that the pump and engine are connected directly together. A belt drive will be separated by a system of belts and pullies. Basic differences being direct drive pumps will run at exact same speed as engine. They will run around 3800 RPM, advantages being they are simple, no belts to adjust, and less expensive initially. Belt drives will run at much lower RPM, between 1400 and 1800 compared to 3800. The create less friction, lower operating temperatures, and overall lower wear and tear. Should extend the life of pump considerably. Disadvantages of belt drive would be more maintenance, possibly adjusting belts, and higher initial cost factor.
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