johnson ocean runner overheating

[capnwill]

started my engine today, hot water commimg out of pisser, warning alarm indicated overheat, is this a costly repair , waht does it entail? thanx for your help

 

[Chris1956]

Re: johnson ocean runner overheating

Overheat is usally caused by a bad waterpump, defective thermostats or both. When was the last time the waterpump was rebuilt? If it has been some years, you might like to do it. In addition, you might remove the thermostats and suspend them in a pot of water on the stove. They should open at 140 degrees F or so.