Onan genset removal question

So I found the 2 screws that were holding in the circuit board, they were right in front of me the entire time but I thought they were for removing the outer case of the genset....apparently not. So I removed the solenoid and circuit board (thanks to everyone's help!!) found out where to remove the green and white wire (easy) but the black wire runs into the other side of the generator, looks like it might connect to the start switch. I'm SO CLOSE (i am fine with cutting the black wire and splicing it later since the splice will be inside the generator and not really exposed to the elements. HOWEVER, now i'm thinking is this really the best way to get this serviced? or would it be better to leave it in the RV and have a service guy look at it? I would hate to take it out and have the tech say "gee, I wish you had left it in the motorhome"......Like I said earlier the reason I need to remove it is because I ran it without oil so i am sure it will need some extensive work.