2004-2005 660 Yamaha Rhino Factory Service Manual, Page 36Get this manual
ENGINE SPECIFICATIONS Item Oil ring
Standard
Dimensions (B T) End gap (installed) Side clearance Crankshaft
2.5 3.4 mm (0.0984 0.1339 in) 0.200.70 mm (0.00790.0276 in) 0.060.15 mm (0.00240.0059 in)