You've made an A-Dapter that makes it much easier to do what has worked for several of us: Remove Fuel line to Carb. Pour the cleaner into Line. Start genset and shut down to let it soak. Be sure to use fittings that won't leak while you aren't carb cleaning. A similar trick is to dose a gallon of gas heavily with cleaner (many like Berryman) and fuel the genset with that mixture.
If you have an ONAN 4KY genset, those carbs have tiny passages that are laid out so you can't "tag wire" them for cleaning. So... If you've got a fix and it works, Good On You.
I met a sport fisherman named Joe from North Carolina. He'd drive his Class C to FL several times a year to fish. One day he was running his generator and I commented how well it started and how smooth it ran. Joe said he puts StaBil in every drop of gas that goes in that 55 gallon tank on the E450. Even on those 700 mile road trips, I asked. And Joe said Yes, Every Drop. So now, j-d does like Joe. I had to replace a carb a few years ago and I don't want the trouble or expense again. Been good now for several years. I still exercise the genset, but now it always starts, always runs well. Just like Joe.
