Choke cylinder with a valve stem Johnson 28 special

[sambrigman]

I have a 90,s model Johnson. The choke cylinoid does not work, it clicks like it should, but no gas. This cylinder has something I have never seen. , there is a valve stem with the red arrow. Does anyone have an idea what the stem is for, Thanks guys

 

[racerone]

This unit is an electric valve.-------Motor should be hooked up to a tank and cranking for gas to come out.----It is not a pump.----------The valve stem can be used to inject storage oil / engine tuner products,-----The red lever is for manual operation.-------Test this way.-------Push key in and have an assistant operate the primer bulb on the hose, does gas come out?

 

[Chinewalker]

That is correct. The valve acts as a primer system. While the engine is turning over, or if the system is otherwise pressurized, fuel can go through the valve when it is activated. The fuel goes from there to a fuel nub on the carb flange which squirts directly into the intake manifold. Gives a solid shot of fuel for starting a cold motor.