alank2 wrote:
So my question is - should the carb be left wet with treated fuel, or should I shut off the fuel switch and let it run dry. I've always thought letting it run dry might leave a little residual fuel in there that could dry up, gum up, varnish, etc.
You haven't told us the make / model of genset your FIL has but it seems to me the best recommendation is to follow the instructions provided in the owner's manual for that particular genset. ;) That said, these instructions are usually in reference to long term storage so the simpler solution I've always used is to just leave gas in it and run the genset at least once a month for awhile, preferably with a load on it, and have never had any issues with either of the two Honda EU2000i gensets I've owned. :)
