Polaris Sportsman 850, Sportsman 850 SP Owner's Manual
![Polaris Sportsman 850, Sportsman 850 SP manual cover](/images/840ab7dc2eb7ad7ee03d38fd/thumbs/thumb175x175.webp)
To perform an oil change on a Polaris Sportsman 850, first warm up the engine to allow the oil to flow better. Place the vehicle on a flat surface and remove the drain plug to let the old oil drain completely. Replace the oil filter and reinstall the drain plug. Finally, fill the engine with the recommended type and amount of oil as specified in the owner's manual.
If your Polaris Sportsman 850 SP won't start, check the battery connections for corrosion or looseness. Ensure the battery is fully charged. Check the fuel level and ensure the fuel valve is open. Inspect the spark plug for wear or fouling and replace if necessary. If the problem persists, consult a professional technician.
To improve the performance of your Sportsman 850, regularly maintain the air filter, spark plug, and fuel system. Consider upgrading to performance parts such as a high-flow air filter or exhaust system. Ensure the tires are properly inflated and the suspension is adjusted for your riding conditions.
Use a high-quality, ethylene glycol-based antifreeze with a 50/50 mix of coolant and distilled water. This will provide optimal performance and protection for your Polaris Sportsman 850 SP's cooling system.
It is recommended to inspect the spark plug every 100 hours of operation or annually. Replace it if it shows signs of wear, damage, or fouling to ensure optimal engine performance.
To adjust the suspension on your Polaris Sportsman 850, locate the shock absorber and use the preload adjuster to increase or decrease the tension based on your weight and riding conditions. Refer to the owner's manual for specific adjustment procedures and recommended settings.
If the brakes feel spongy, check the brake fluid level and top it off if necessary. Inspect the brake lines for leaks or air bubbles. Bleed the brakes to remove any trapped air. If the problem persists, consult a professional technician for further diagnosis.
To clean the air filter on your Polaris Sportsman 850, remove it from the airbox and gently tap it to remove loose dirt. Use a mild detergent and water to wash the filter, then rinse thoroughly. Allow it to dry completely before reinstallation. Apply air filter oil if required.
The recommended tire pressure for a Polaris Sportsman 850 SP is usually between 5-7 psi for the front tires and 5-7 psi for the rear tires. Always refer to the owner's manual for specific recommendations based on your riding conditions.
To troubleshoot electrical issues on your Sportsman 850, start by checking the battery voltage and connections. Inspect the fuses and replace any that are blown. Examine the wiring harness for signs of damage or corrosion. If you are unable to identify the issue, seek assistance from a qualified technician.