10. CRANKCASE/CRANKSHAFT AGILITY RS 50 NAKED SERVICE INFORMATION GENERAL INSTRUCTIONS · This section covers crankcase separation to service the crankshaft. · The following parts must be removed before separating the crankcase. Engine ( Section 5) Driven pulley ( Section 9) Carburetor ( Section 11) A.C. generator ( Section 7) Oil pump ( Section 4) Cylinder head/cylinder ( Section 6) Reed valve ( Section 11) · When the left crankcase must be replaced, remove the following part in addition to the above. Final reduction removal · Special tools must be used for crankshaft and crankcase assembly. When separating the crankcase, the bearing will remain in the crankcase and it should be removed. When, assembling, drive a new bearing into the crankcase and install a new oil seal. SPECIFICATIONS Standard (mm) Service Limit (mm) Item Connecting rod big end side clearance 0.60 Connecting rod big end radial clearance 0.04 Crankshaft runout A/B 0.15/0.10 SPECIAL TOOLS Crankcase puller Bearing outer driver handle A Universal bearing puller Bearing outer driver, 42x47mm Crankcase assembly collar Bearing driver pilot, 20mm Crankcase assembly tool Bearing outer driver, 37x40mm Bearing driver pilot, 17mm TROUBLESHOOTING Abnormal engine noise · Excessive crank journal bearing play · Excessive crankpin bearing play · Excessive transmission bearing play 10-2