Polaris Sportsman 300 Owner's Manual

The recommended oil type for a Polaris Sportsman 300 is 10W-40 synthetic ATV oil. Always check the owner's manual for the most accurate information.
It is recommended to change the oil every 50 hours of operation or at least once a year, whichever comes first. Regular oil changes are crucial for maintaining engine performance.
First, check the battery and ensure it is fully charged. Inspect the spark plug for wear or damage and replace if necessary. Additionally, verify that the fuel is fresh and that the fuel lines are clear.
The recommended tire pressure for a Polaris Sportsman 300 is typically 5 psi for the front tires and 7 psi for the rear tires. Always refer to the owner's manual for specific details.
Regularly inspect the brake pads for wear and replace them if they are less than 1/8 inch thick. Additionally, check the brake fluid level and top up if necessary. Ensure the brake lines are free of leaks.
If overheating occurs, immediately stop the ATV and let it cool down. Check the coolant level and top off if necessary. Inspect the radiator for obstructions and ensure the cooling fan is operational.
Remove the air filter cover and take out the air filter. Wash it with warm soapy water and let it dry completely. Apply a light coat of air filter oil before reinstalling it.
For winter storage, clean the ATV thoroughly, change the oil and filter, add fuel stabilizer, and disconnect the battery. Store it in a dry place and cover it to protect from dust and moisture.
To adjust the chain tension, loosen the rear axle nuts and move the rear axle to achieve the desired tension. Ensure the chain has about 1/2 inch of slack. Tighten the nuts securely after adjustment.
Before riding, check the tire pressure, oil level, coolant level, brakes, and lights. Ensure all controls operate smoothly and inspect for any loose or damaged components.