This is not exactly on subject, but maybe helpful.
I have a 4236, circa mid'80's.
Broke an alternator/water pump belt at a most inconvenient time(of course). Fortunately I was looking at the ignition light at the exact moment it came on.
It took less than a minute to shut down engine
, but nonetheless it was on the verge of boiling.
Luckily I had a spare V belt cable tied onto the front of engine
, for just such an emergency
. I have a few other devices driving off the front pto.
Since then I have put a very loud piezo alarm
into the alternator
I also have a set of, 'murphy gauges', as a back-up.
I think it is called, 'cost v benefit'.
If the boat is new to you I would also recommend that you have a complete HP injector pump
and injector service
and change the 'O' ring seals
in the heat exchangers.