You have a good start on the basics, but the other part is not hard either. Good on yer for changing those hoses and clamps Did you inspect the heat exchanger
innards when you did that?
Our engine is Perkins
, 1983 with almost 5000 hours on it. You may not have to do as much with a newer engine, but we don't have to worry about winterizing.
Mainly, don't forget the fuel system. We have Racor's on the generator
and main engine and I inspect the element, something you can't do with the closed can filter on the engine. So far they always seem very clean, but I change them and the engine mounted filter every couple years.
Transmission oil should be changed depending on hours of use, Check the manual. That is probably easier, depending on access, than the main engine oil change
I had been checking valve "lash" or clearance every year but do it less often now since it seems to not change at all. Head
bolt torque I have done maybe twice on this Perkins
in 25 years.
You may also want to check torque on the bolts that hold down the fuel injectors. One of mine came slightly loose and it took me a while to figure out the load noise!
I know I should replace the manual fuel pump gasket
(got a whole new pump sittting in a box) since that can leak fuel into the oil, but didn't get around to it yet.
Periodically check for leaks
at high pressure fuel points on the engine. We check the main engine at start-up and every couple hours when running. That's because we had a serious fuel leak on the Perkins once that was a bit scary (had to rebuild
the injection pump) and another small but annoying leak on the generator
Now, the thermostat. I never opened our thermostat yet (my bad), and don't think I will. Over 25 years the engine starts, warms up quickly and runs fine to 170F, never higher.
Just tackle it one at a time. None of this is any harder than what you have already done.