Generator not starting

Steve welcome to the forum, it won't become a money pit if you can do some simple things yourself. If you have to take it to a dealer every time something goes wrong it probably will. I would remove and clean each cable end as others have suggested, check the inside of the cable ends where the braided wire goes into the crimped end for green corrosion also. This is often overlooked and sometimes hard to see if tape is wrapped around the ends. How old are your batteries? Will they hold a charge all winter without being connected to a charger? Once the connections are cleaned and tightened try to start the genset. If you still get a clicking sound you can start the chassis engine and that will combine it with your house batteries to supply more amperage to turn over your starter. If it starts you know you problem is with the house batteries. If it still does not start try tapping on the starter while the switch is depress for start on the genset, it it starts then you know there is a problem with the starter. Good luck and let us know how you make out.