Max, as I understand it the V40 is a Chonda copy of a Honda engine, but I do not know which model. In genuine pushrod Hondas, GXV120 is 118 cc, GXV140 is 135 cc, GXV160 is 163 cc. The Chonda I have is 163 cc, and is very similar to a GXV160. The Ruixing carburetor it uses is a close copy of the Keihin BE66C carburetor used on the GXV160. Having said all that though, the V40 is not the same as my Chonda: the V40 does not have "OHV" pressed into the rocker cover, as both real GXV engines and my Chonda do. (The letters run horizontally on a real Honda, and vertically on a Chonda).
The main point here is that your Ruixing is fairly sure to be a copy of the Keihin used on the equivalent genuine Honda. If you take your Ruixing gaskets to a Honda dealer you can compare them with the Keihin ones that come in little plastic Honda bags.
Incidentally if it is leaking fuel from the top of the float bowl, rather than around the securing nut at the bottom of the float bowl, the carburetor is flooding and the problem is not with the float bowl gasket. You will need to clean the needle and seat area. You will also need to flush out the fuel tank, clean the filter (in the fuel hose where it attaches to the tank), and flush the fuel hose and fuel tap. If your particular Chonda does not have a fuel tap (mine doesn't) it would be a good idea to install one. Gravity feed fuel systems without taps inevitably cause flooding problems while the engine is stored between uses.
Last edited by grumpy; 21/11/12 06:00 AM. Reason: Add detail
