2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 37Get this manual
MAINTENANCE Spark Plug InspectionInstallation 1Inspect electrodes for wear and carbon buildupLook for sharp outer edge with
the battery-to-chassis connection underneath the seatThis connection allows the chassis to provide ground path3 Gap.035"
(0.90 mm) 4If necessary, replace spark plug with proper typeCAUTION: Severe engine damage may occur if the incorrect spark
plug is usedInspect the chassis-to-engine connection on the left side of the engine attached to the enginetransmission housingThis
connection allows the engine to provide ground path Recommended Spark Plug Champion REA6MC or REA8MCL Spark Plug Torque:
18 1.5 ftlbs(25 Nm) 567Apply small amount of anti-seize compound to the spark plug threadsInstall spark plugs and torque