Polaris Sportsman 550 X2, Sportsman 850 X2 Owner's Manual
![Polaris Sportsman 550 X2, Sportsman 850 X2 manual cover](/images/e48ee7d2d762fbf62c77993a/thumbs/thumb175x175.webp)
The recommended maintenance schedule for the Polaris Sportsman 550 X2 includes checking the oil level and tire pressure before each ride, changing the oil every 25 hours of operation, inspecting the air filter every 50 hours, and performing a full inspection every 100 hours.
If your Sportsman 850 X2 is having starting issues, check the battery connections for corrosion or looseness, ensure the fuel level is adequate, inspect the spark plug for wear, and verify that the kill switch is in the 'run' position.
The Polaris Sportsman 550 X2 requires a high-quality 4-stroke engine oil, specifically Polaris PS-4 Synthetic 5W-50, to ensure optimal performance and protection.
To adjust the suspension on the Sportsman 850 X2, use the preload adjustment rings found on the shocks. Turn them clockwise to increase preload for a firmer ride, or counterclockwise to decrease preload for a softer ride.
Remove the air filter from the airbox, gently wash it with a mild soap and water solution, rinse thoroughly, and allow it to dry completely before re-oiling and reinstalling it back into the airbox.
Use a tire pressure gauge to check the current pressure. Refer to the owner's manual for the recommended psi, usually around 5-7 psi, and adjust as necessary using an air compressor or by releasing air.
To winterize your Polaris Sportsman 550 X2, clean the ATV thoroughly, add fuel stabilizer to the tank, change the oil and filter, remove the battery and store it in a warm place, and cover the ATV to protect it from the elements.
To improve fuel efficiency, ensure regular maintenance, keep the tires properly inflated, avoid excessive idling, and maintain a steady speed during operation.
If the check engine light comes on, first ensure the fuel cap is tight, check for any visible issues like loose wires, and consult the diagnostic trouble code (DTC) using a code reader or visit a Polaris dealer for an assessment.
To replace the spark plug, remove the spark plug boot, use a spark plug socket to unscrew the old plug, check the gap on the new spark plug, install it by hand to avoid cross-threading, and tighten with a socket wrench before reattaching the boot.