2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 270Get this manual
ENGINE BOTTOM END 8-23 Crankshaft and Connecting Rods
Crankshaft Main Bearing InsertJournal Wear
Measure the bearing insertjournal [BJ clearance with plastigage [AJ
o Tighten the crankcase bolts to the specified torque (see
Crankcase Assembly)0 00 not turn the crankshaft during clearance measurementOJournal clearance less than 0.025 mm (0.0010 in can not be measured by plastigage, however, using genuine parts maintains the minimum standard clearanceCrankshaft Main Bearing InsertJournal Clearance Standard: 0.0300.054 mm (0.00120.0021 in Service Limit: 0.08 mm (0.0032 in
If clearance is within the standardno bearing replacement is requiredIf clearance is between 0.055 mm (0 .022 in and the service limit (0.08 mm0.0032 inreplace the bearing inserts [A] with inserts painted blue [B]Check insertjournal clearance with the plastigageThe clearance may exceed the standard slightly, but it must not be less than the minimum in order to avoid bearing seizure If clearance exceeds the service limit, measure the diameter of the crankshaft main journalCrankshaft Main Journal Diameter Standard: 40.98441.000 mm (1.61351.6142 in Service Limit: 40.96 mm (1.613 in