- Dec 5, 2005
I am in the final stages of my '73 commando 750 rebuild.The bike had stood for many years prior to my acquiring it, and as such the carburettors were badly gunked up. After copious quantities of carburettor cleaner, compressed air and probing with thin copper wire I can now get air and cleaner fluid to pass through the air passage and also through the pilot jet to the two small orifices at the front the carburettors, when I insert the tube of the carb cleaner aerosol can in the opening left where the air adjuster screw fits. However, no air or cleaner fluid will pass through the small threaded hole under the body of the carb. I assume this small hole is where fuel will pass through the pilot jet into the mixing chamber. How do I rectify this problem?