Onan microlite 2800 Gas Carburetors

westend wrote:
I serviced small engines for a decade. This is the most effective way to clean a carburetor: Remove carb from engine (make note of connecting throttle and governor rods/springs). Place rags on clean work surface and disassemble carb, including fuel adjustment jets and any plastic. Place parts in a line on work surface in order removed. Sometimes, the adjustment jets can be run in all the way to calibrate for assembly, later (be careful, don't bend anything). Place all the metal parts, including the carb body, in the basket of the carb cleaner container. Lower the basket into the cleaner and let soak. A few hours is usually good. Overnight, all residue is softened. Clean parts with solvent or gas. Blow dry. Reassemble.

I am still using my original gallon container of Berryman's carb cleaner, purchased 15 yrs ago. I have cleaned over 100 carbs with this cleaner.

Good luck!

Correct.

Which is why I mention just sitting the carb in a solvent bath does nothing..

The main area the build up affects is at the main jet and atomizer tube, very fine small holes that could take weeks, months or even years before a solvent will ever make it through without PRESSURE or even cleaning wires..

To make the solvent work, the carb does need to be dismantled in order to get the solvent into all the areas..

Then once the solvent has had time to soften the deposits you need to thoroughly remove the offending build up with either air pressure or spray cleaner..

Then careful reassembly after that..

That is why many manufacturers like Onan specifically tell their techs to replace the carb.. Simple and effective but costs the owner an arm and leg..