Here's why:
* 2-stroke engines use a pre-mixed fuel and oil solution. This means that the oil is already mixed with the gasoline and lubricates the engine internally during combustion.
* 4-stroke engines have a separate oil reservoir for lubricating the engine. This oil needs to be changed regularly.
However, 2-stroke engines do require periodic maintenance, including:
* Checking and topping off the fuel/oil mix: Ensure you have the correct fuel/oil ratio for your specific engine.
* Changing the spark plug: A worn spark plug can affect performance and fuel efficiency.
* Cleaning the air filter: A dirty air filter can restrict airflow and cause engine problems.
* Inspecting other components: Check the chain, brakes, and other parts for wear and tear.
Always refer to your Polaris 4-wheeler's owner's manual for specific maintenance instructions and schedules.