11.CRANKSCASE/CRANKSHAFT/ BALANCE SHAFT ATV 300/250 SERVICE INFORMATION GENERAL INSTRUCTIONS · This section covers crankcase separation to service the crankshaft. The engine must be removed for this operation. · The following parts must be removed before separating the crankcase. -Cylinder head (Chapter 7) -Cylinder/piston (Chapter 8) -Drive and driven pulleys (Chapter 9) -A.C. generator (Chapter 16) -Starter clutch (Chapter 18) -Oil pump (Chapter 4) SPECIFICATIONS mm (in) Item Standard Service Limit 0.050.4 Connecting rod big end side clearance 0.6 (0.024) (0.0020.016) Crankshaft Connecting rod big end radial clearance 00.008 (00.00032) 0.05 (0.002) Run out 0.1 (0.004) TORQUE VALUES Crankcase bolt 1 kgf-m (10 N-m, 7.2 lbf-ft) Cam chain tensioner slipper bolt 1 kgf-m (10 N-m, 7.2 lbf-ft) Cam chain cover bolt 1 kgf-m (10 N-m, 7.2 lbf-ft) TROUBLESHOOTING Excessive engine noise Excessive bearing play 11-2