2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 152Get this manual
FUEL SYSTEM (DFI) 3-93 Fuel Line
Push and pull [A] the hose joints [8] back and forth more than two times and make sure they are locked and don't come offWhen the hose joints are correctly installed, they should slide on the pipe aboutmm (0.040.08 in
Check the joint lock for deformation and wearIf the joint lock is deformed [A], replace the fuel hose with new one