2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 268Get this manual
ENGINE BOTTOM END 8-21 Crankshaft and Connecting Rods
Connecting Rod Twist
On surface plateset the big-end arbor [A] on block [C] Measure the difference in the heights of the arbor [B] above the surface plate over 100 mm (3.94 in distance-on the arbor to determine the amount of connecting rod twist with the connecting rod held horizontally, and using height gauge If connecting rod twist exceeds the service limit, the connecting rod must be replacedGI050 .4 Q1SI C
Connecting Rod Twist Service Limit: 0.21100 mm (0.0083.94 in
Connecting Rod Big End Side Clearance
Measure connecting rod big end side clearance [A] Olnsert thickness gauge [B] between the big end and either crank web to determine clearance Connecting Rod Big End Side Clearance Standard: 0.130.38 mm (0.00510.0150 in Service Limit: 0.58 mm (0.023 in
If the clearance exceeds the service limit, replace the connecting rod with new one and then check clearance again If clearance is too large after connecting rod replacement, the crankshaft also must be replaced