[RichardKCMo]

92 polaris, runs on garden hose just fine gets water in motor when launched, replased ex gasket no obvious cracks anywhere. Any ideas?
RichardKCMo

 

[97 SL1050]

My first guess would be,leaking at head gaskets,probably #1 cylinder if it runs on a garden hose.Could also be a cylinder wall or cylinder gasket,the early 650 had coolant passages in cases.