2010 Polaris Sportsman 850 Service Manual, Page 144Get this manual
ENGINE Connecting Rod Inspection 12Secure connecting rod lightly in soft jawed viseNote location of the piston circlip gap
piston slightly with propane torch or heat gun Do not apply heat to piston rings or loss of radial tension could result5Measure
piston pin O.Din two directions and locations on the length 10Using dial bore gauge, measure big end I.Din two directions
shownRecord measurementsDifference between measurements is concentricityCompare to specifications11Select appropriate bearing
insert (color) from table (page 5.47)Install New Remove bearings 1Tighten snug 2Torque 24 lb-ft(33 Nm) Piston Pin O.D: 0.7873"
.0001" (19.9975 .0025 mm) 6Inspect small end and big end of connecting rod (and matching rod cap) for damage, galling of