Does a 2004 polaris sportsman 500 have water pump?

Yes, the 2004 Polaris Sportsman 500 has a water pump. The water pump is responsible for circulating coolant throughout the engine to keep it cool. The coolant is pumped from the water pump to the engine block, where it absorbs heat from the engine. The coolant then returns to the water pump, where it is cooled down and recirculated.