Not sure on a Generac, but my Onan needs pulled for an oil leak also. I helped my neighbor pull his last year and it's not tough if you have something to lower it with. Remove the muffler, disconnect the fuel line and be prepared to plug it, disconnect the 12v coming to the starter, and disconnect the outgoing electrical. Four bolts and it drops out the bottom, we used a motorcycle jack to lower it down and reinstall it.
Roger And Kim Goodwin
bout them DAWGS!!