Hot Water Tank

[Steve H]

How long does the engine need to run to provide usable hot water? I don't seem to ever get hot water from running the engine. I've looked for some secret valve, but no luck so far.

I don't motor much, so maybe it takes longer than I think it should.

[BobK]

If I power 2000+ rpm for an hour the water is too hot to shower with,without adding cold to it.
BobK

[wes]

An hour should do it, at most, with the engine under load at cruising speed. Probably less. However it takes forever - several hours - just sitting at the dock at idle speed. The little Universal just doesn't produce much heat at idle.

Wes