10. CRANKCASE/CRANKSHAFT/TRANS- MISSION SYSTEM/STARTER SPINDLE QUANNON 125 GEAR/SHAFT COLLAR INSPECTION Check each gear and gear teeth for wear, damage, or poor lubrication. Measure each gear I.D. Service Limits: Main shaft 4th/5th gear: 20.061mm replace if over Countershaft 3rd gear: 20.061mm replace if over Countershaft 2nd gear: 22.081mm replace if over Measure each shaft collar I.D. Service Limits: Countershaft starter idle gear: 16.6mm replace if over Countershaft 1st gear: 16.6mm replace if over Shaft Collar Measure each shaft collar O.D. Shaft Collar Service Limits: Countershaft starter idle gear: 19.73mm replace if below Countershaft 1st gear: 19.23mm replace if below 10-7