2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 34Get this manual
MAINTENANCE Spark Plug
1Remove spark plug high tension leadClean plug area so no dirt and debris can fall into engine when plug is removed2Remove spark plug3Inspect electrodes for wear and carbon buildupLook for sharp outer edge with no rounding or erosion of the electrodes
Battery Maintenance
Complete battery servicing information for both conventional and sealed batteries can be found in Chapter 10 of this manual
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