My Gen stalls out after about 1 min. It restarts right away but stalls out again after a min.?? I don't put any load on it I just start it and it starts right up it just won't stay running.

Check to see where it is drawing the fuel from the tank. There may be a valve there that is closed. Then check the filter on the genset. Seems like a fuel problem.

Generators generally have a safety shut-off mechanism for overspeed, low oil pressure, hi temp, and some other conditions. If it dies because of loss of spark, this may be your problem. Check to see if any of these are a problem. If not, disconnect the grounded kill wire from the distributor or magneto. You might need to check your wiring diagram for this. If it runs then, it's probably a relay in the shut off circuit.
If it dies from lack of fuel, check filter, pump, carb, etc.

Ditto ...

A man of few words.

Most of the time,no water. Is water flowing thru the thru hull fitting? If the boat has been on a trailer or in dry storage, it may have lost its prime,an easy fix. Or the impeller may have failed,also an easy fix.

Also check the oil level-will shut off if it's a little low.

Any mail order places where I can order a Tune up kit? It's a Kohler 5E genset