2004-2006 Kawasaki 900 STX Jet Ski Service Manual, Page 41Get this manual
PERIODIC MAINTENANCE 2-21 Periodic Maintenance Procedure All Nuts, Bolts, and Fasteners Check
Nuts, Bolts, and Fasteners Tightness Inspection
conditionthe tightness of and hereAlso, Check to see that eachthe boltspin isnuts listedand in good check cotter in place