11. CRANKCASE/CRANKSHAFT AGILITY 50 Clean off all gasket material from the crankcase mating surfaces. Avoid damaging the crankcase mating surfaces. Oil Seal Remove the oil seal from the left crankcase. Oil Seal Remove the oil seal from the right crankcase. CRANKSHAFT Measure the connecting rod big end side clearance. Service Limit: 0.55mm replace if over Connecting Rod Big End 11-3