10. CRANKCASE/CRANKSHAFT/TRANS- MISSION SYSTEM/STARTER SPINDLE QUANNON 125 Balance Shaft BALANCE SHAFT REMOVAL. Remove the balance shaft assembly. INSPECTION Inspect the balance shaft for deformation and damaged grooves. Measure the balance shaft O.D. Service Limits: Left : 16.924mm Right : 16.924mm Right Left BALANCE SHAFT BEARING REPLACEMENT Remove the balance shaft bearing from the right crankcase halves using the following tools. Drive in new bearings using a bearing driver. · Apply engine oil to the bearing before installation. · Drive in bearings squarely. Countershaft Main Shaft TRANSMISSION GEARS/ CRANKSHAFT REMOVAL Remove the transmission main shaft and countershaft from the right crankcase. When removing, the transmission gears must be removed as a set. Remove the crankshaft. Disassemble the main shaft and countershaft. 10-6