2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 164Get this manual
FSFST Engine Connecting Rod Bearing Oil Clearance Inspection
NOTE: Do not move the crankshaft or connecting rods until the measurement process is completed! 1Using the original connecting rod bearings, install each piston back into the upper crankcase
Bearing Replacement Guide
NOTE: The bearing color is imprinted on the side of each bearing shell CONNECTING ROD SPECIFIED OIL CLEARANCE: .024.053mm (.0009.0021in MEASURED OIL CLEARANCE: ORIGINAL INSTALLED BEARING COLORTHICKNESS:_ REPLACEMENT BEARINGS (THICKNESS RANGE): RED (0451338): 1.7211.726mm (.0677.0679in YELLOW (0451337): 1.7261.731mm (.0679 .0681in BLUE (0451339): 1.7311.736mm (.0681.0683in GREEN (0451340): 1.7361.741mm (.0683 .0685in BROWN (0451341): 1.7471.746mm (.0685 .0687in If the measured clearance is within specifications, replace bearings with new bearings with the same color codeIf the measured gap is larger than specified, replace bearings with the next larger bearing and re-measureIf the measured gap is smaller than specified, replace bearings with the next smaller bearing and re-measureAlways measure the crankcase main bearing and connecting rod big-end inside diameters and compare to specificationsReplace components that are outside of specificationIf the original bearings reveal an oil clearance of .04.05mm, install new bearings with the same color code as the originals