2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 355Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 355

BRAKES Inspection 1Inspect caliper body for nicks, scratches or wearMeasure bore size and compare to specificationsReplace
light resistance3Lubricate the mounting bracket pins with disc brake caliper lube, and install the rubber dust seal boots
= In mmRear Caliper Piston Bore I.DService Limit: 1.193" (30.30 mm) 2Inspect piston for nicks, scratches, wear or damageMeasure
diameter and replace if damaged or worn beyond service limit 3Inspect the brake disc and pads as outlined for brake pad replacement