On the side of the carburetor that is beside the cam cover, below the idle speed and idle mixture adjustments, the carburetor manufacturer's name is moulded on the body casting. That will be "Keihin" if it is a Honda, and "Ruixing" if it is a chonda. The carburetors are the same (apart from quality differences, if any), and the parts seem to be interchangeable. I haven't personally seen a chonda that follows the design of Honda's cheap line (the OHC, or overhead cam, engines, designated GCV) - I've only seen OHV chondas (the engines Honda designates GXV). Given the low manufacturing costs in China I doubt it would make sense to copy the cheap line, since it would probably only cost a few pennies more to copy the premium line. So, there are three types of engine you may have:
1. A Honda GXV. This would have the letters "OHV" running horizontally across the rocker cover.
2. A Honda GCV. This would have the letters "OHC" running horizontally across the rocker cover.
3. A chonda. This would have the letters "OHV" running vertically down the rocker cover.
Between the brand on the carburetor casting, and the letters on the rocker cover, we will be able to identify your engine. Once we know which it is, we can get into detail on the checking and cleaning procedure. Note that the GCV carburetor is a cheap Keihin, the GXV a more expensive Keihin, and the chonda carburetor is a Ruixing nearly identical to the expensive Keihin, but not in all details, so we need to know which of these we are talking about.
