2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 42Get this manual

2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 42

Maintenance Hydrolock A hydrolock condition can be caused by either water or fuel ingestionMost often, water ingestion causes
follow these steps: 12345678Lift the seat assembly off of the topdeckIs the seat abnormally heavy compared to others? Check
engine compartment hull liner for signs of water andor water lineVisually inspect engine for signs of cracking, or missing
partsCheck engine compressionInspect reeds for water damageVerify crankshaft index(3 cylinder engines120_cylinder engines180_
Inspect flywheel and flywheel key for abnormal damageVerify ignition timing on MAG cylinderAlways check for service tips
service bulletinsS S If the engine requires disassembly, check the following components for signs of hydrolock: Crankshaft
Bearings: Inspect ALL bearings for signs of rust or damageConnecting Rods: Inspect for cracks, overheating, or dimplesroller
bearing imprints on small and bigend bearing surfacesS Piston PinPiston: Inspect pin for roller bearing imprints and rustFailures
attributed to hydrolock are, but not limited to: Engine will not startSevere backfiringHoled or melted piston(s)Engine overheatingPoor