Polaris Sportsman 570 Overheating (Problems & Solutions)

The probable reasons behind the Polaris Sportsman 570 overheating are faulty fan motors, low coolant levels, blocked radiators, faulty thermostats, wrong coolant mixture, etc., are among the common reasons.

Polaris Sportsman 570 is a great choice when it comes to ATVs. However, like all vehicles, this one also comes with its problems and issues. Overheating is one of the most common problems that ATV owners encounter. 

Don’t be worried about your 570 overheating. All problems have solutions. Keep reading to learn why overheating happens and how you can easily solve the issue.  

Overheating Issue with Polaris Sportsman 570-Causes & Solutions At A Glance

For a quick understanding, we have prepared a table of the possible reasons behind overheating and its solutions.

Faulty Fan Motor Repair or replace the motor.
Low Coolant LevelAdd more fluid to the radiator.
Blocked RadiatorClean out all the pollutants accumulated inside. 
Faulty ThermostatRepair or replace the system. 
Wrong Coolant MixturePour the right solution into the radiator. 
Bad Water PumpRepair or replace the water pump. 

Polaris Sportsman 570 Overheating- Reason and Solution in Details

Polaris Sportsman 570 Overheating Issues

As we mentioned earlier, there are quite a few reasons that cause ATVs to overheat. Solving these problems as soon as they appear is a must to avoid severe accidents or injuries. Let us guide you through the details of the reasons and how you can fix them easily. 

1. Faulty Fan Motor

One of the most common reasons why an ATV overheats is a bad fan motor. As the vehicle moves along the terrain, the engine heats up and requires cooling. If the fan motor is faulty, then it will not be able to function properly. Thus, the overall temperature will continue to rise, causing overheating. 


The solution to this problem is extremely simple. Check the cooling fan in the vehicle and make sure that it is working properly. Replace the engine or replace it with a new one if required. You can install in place of the old one. 

2. Low Coolant Level

Each and every vehicle in the market requires coolant in the radiator. The purpose of relying on coolant is to make sure that the engine cools down properly. However, there is a specific amount required in each radiator, and a low coolant level will result in overheating. 


Examine the radiator and make sure that the coolant is at the right level. Add more to the radiator until it reaches the right amount. This will make sure that the vehicle does not heat up more than normal. 

3. Blocked Radiator

Another primary reason behind excessive heating is a blocked radiator. Oftentimes, the radiator gets blocked due to the accumulation of dirt, dust, debris, and so on. When the radiator is blocked, it will not be able to cool the ATV properly, and the vehicle will overheat significantly. 


Check the radiator and see whether it is clogged or not. Conduct a radiator flush by cleaning the entire system properly. This will cause the system to be clear of grime, dirt, dust, and all other pollutants. And the radiator will provide efficient performance. 

4. Faulty Thermostat

ATVs come with a thermostat in the cooling system, which helps the engine to maintain the right temperature. If the thermostat is malfunctioning or stops working altogether, then it will not be able to perform its work correctly. This will result in malfunctioning temperature control and result in excessive heating of the engine.


Inspect the vehicle’s thermostat and ensure it is in proper working condition. If the thermostat is faulty, repair it and ensure that it holds the temperature properly. However, if repairing does not work, then replace the system with a new one. 

To know more about replacing the thermostat, the following video may give you more visual advantages.

5. Wrong Coolant Mixture

Every car relies on a specific type, formulation, and concentration of coolant. Using the wrong mixture or type of coolant will prevent the radiator from cooling the ATV properly. Not only that, but it will affect the vehicle’s overall health over time. 


Take out the user manual of the Polaris Sportsman 570 and ensure that you are using the right mixture of coolant. If the one you are using is wrong, then flush and throw out the entire fluid properly. Fill the radiator up to the correct level with the right type and concentration of liquid. 

6. Bad Water Pump

The water pump is an important vehicle component. This pump pushes hot coolant from the engine of the ATV through the cooling system. And the cooled coolant then travels back to the engine. But if the water pump does not work, then the hot coolant will remain trapped in the engine, causing overheating. 


Scan the entire system properly and ensure that the water pump is not malfunctioning. Repair the water pump and ensure that there are no leaks or problems. If the pump does not work after repair, the best option is to replace it. 

The Consequences Of Overheating In Polaris Sportsman 570

Polaris Sportsman 570 Fluid Leaks

When the Polaris Sportsman 570 overheats, the owners encounter quite a few consequences. Overheating causes the engine to heat up more than usual and affects the overall health of the ATV. It also results in power loss, fluid leaks, and so on. 


Here, we have answered some of the most commonly asked questions about the topic!

Is the thermostat important in Polaris sportsman 570?

The thermostat is a necessary part to ensure and maintain a correct operating temperature in the ATV. 

What happens if the ATV heats up excessively?

Overheating or excessive heating can result in accidents or fires, putting you and your vehicle at risk. 

How do radiators get clogged?

The radiator picks up dirt, debris, mud, etc., from the roads when the ATV travels.

Bottom Line

The Polaris Sportsman 570 overheating is nothing unusual. It is a common issue that owners usually face, but taking immediate action is a must. This is because a constantly high temperature can cause the engine to catch fire and result in significant damage. 

Some problems are easy-solvable by yourself. Some may need professional treatment. By the way, taking professional treatment is recommended if you are not that much familiar with mentioned events. 

Mark Williams

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