10. CRANKCASE/CRANKSHAFT/TRANS- MISSION SYSTEM/STARTER SPINDLE QUANNON 125 STARTER SPINDLE INSPECTION Inspect the starter spindle for wear or damage. Measure the starter spindle O.D. Service Limits: A2 : 15.95mm replace if below B : 19.95mm replace if below A1 : 11.95mm replace if below A1 A2 B Starter Spindle Play BEARING INSPECTION Play Check the main shaft, countershaft and balance shaft bearings for smooth turning. Replace the bearings with new ones if they do not turn smoothly, quietly, or if they fit Axial loosely in the case. Radial If the countershaft needle bearing in the right crankcase is noisy or has excessive free play, replace it with the crankcase as a set. Countershaft Bearing Right Crankcase Main Shaft Bearing BEARING REPLACEMENT Remove the main shaft and countershaft bearings from the left and right crankcase halves using the following tools. Special Tool Bearing Remover E037 Bearing Remover Block E037 Main Shaft Bearing Remover Countershaft Bearing Drive in new bearings using a bearing driver. Crankcase · Apply engine oil to the bearings before installation. · Drive in bearings squarely. Special Tool Bearing Driver E037 Bearing Driver 10-9