2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 71Get this manual
EngineCooling W120HO- DFI Engine Assembly CAUTION: The cylinder mounting studs on Polaris engines are used to secure crankcase halves along with the crankcase boltsCylinder base nuts must be temporarily installed and torqued to maintain even pressure on the crankcase sealing surfaces during top end assemblyDo not allow crankcase sealer to cure before torquing base nuts or assembling the top endBe sure all top end parts are clean, inspected, and ready for assembly prior to assembling engine lower endImproper crankshaft main bearing clearance may result if sealer dries, causing premature engine wearBe sure to follow the Crankcase Assembly procedure below when assembling crankcases1Clean crankshaft and lubricate with Polaris Premium Cycle Oil