2001 Polaris SLH, Virage PWC Factory Service Manual, Page 91Get this manual
EngineCooling Engine Inspection 700cc EngineContinued
Crankshaft Main Bearing Inspection
1Clean crankshaft thoroughly and oil main and connecting rod bearings with Polaris Premium cycle engine oilCarefully check each main bearing on the shaft
NOTE: Due to extremely close tolerancesthe bearings must be inspected visually, and by feelLook for signs of discoloration, scoring or galling Turn the outer race of each bearingThe bearings should turn smoothly and quietlyThe inner race of each bearing should fit tightly on the crankshaftThe outer race should be firm with minimal side to side movement and no detectable up and down movementReplace any loose or rough bearingsConnecting Rod (Big End) Side Clearance
1Measure connecting rod big end side clearance with feeler gaugeCompare to specifications
Connecting Rod Big End Side Clearance Standard: .014.020" (.36-.51 mm) Service Limit: .022" (.56mm)
Connecting Rod (Big End) Radial Clearance
1Rotate rod on crankshaft and check for rough spotsCheck radial end play in rod by securing crankshaft in holding fixtureSet up dial indicator as shown in illustration at rightSupport connecting rod against one thrust washer and apply up and down pressure on connecting rodRead total movement of indicator and compare to specificationsReplace rod, bearing, pin, and thrust washers if clearance is excessiveImportant Note: very small amount of radial play is normal and may be barely perceptible when inspecting by feelco