[Vlad]

Now let's see how to make small engine run perfectly on propane and if you need on gasoline as well.

All my converted engines can run on gasoline or propane.

Here are major components you need to convert your small engine to propane (also there are some "accessories" for safety and easiness of use).

1. Propane tank. I prefer using 16 oz containers for lawnmower (they are easily refillable) and 20 lb BBQ tank for larger applications

2. Special pressure regulator (called zero governor). This is a special regulator it has very sensitive diaphragm that senses very low vacuum from carburetor (venturi effect)and supply correct amount of gaseous propane. This regulator doesn't supply propane until engine creates vacuum.

Unlike in previews conversion now we have device that senses engine fuel demand and supply right amount of fuel (gaseous propane) all the time.

3. We need some sort of restrictor because zero governors are made usually for a wide range of engines (5-15 hp or 5-25 hp or 10-40 hp etc.). You can use ball valve or just a T with a bolt in the middle for restriction or some sort of valve. You need to set it up only ones when you run your engine on full power.

4. You need some sort of delivery device that delivers propane into carburetor. This part is one where you have to use your brain.

You can buy a special adaptor that is made specificly for your engine. This is the best way but if you want to save some $$ it is easy fix part.