2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 238Get this manual
6-40 ENGINE TOP END Cylinder, Pistons
Piston Ring End Gap
Place the piston ring [A] inside the cylinder, using the piston to locate the ring squarely in placeSet it close to the bottom of the cylinder, where cylinder wear is low Measure the gap between the ends of the ring with thickness gauge [8]Piston Ring End Gap Standard: Top Second Service Limit: Top Second 0.7 mm (0.0276 in 0.8 mm (0.0315 in 0.250.40 mm (0.00980.0157 in 0.400.55 mm (0.01570.0217 in