Fuel injection pumping apparatus

A fuel injection pumping apparatus for supplying fuel to an associated internal combustion engine, comprising an injection pump having an axially movable control rod for determining the amount of fuel delivered by the injection pump at each injection stroke, governor means comprising a first pivotal link mounted about a fixed axis, a second pivotal link pivotally connected at one end to the first link at a position removed from said fixed axis, a slot defined in said second link, pivot means located in said slot, operator-adjustable means for adjusting the position of said pivot means within said slot, said second link being operatively connected at its other end to said control rod, a spring biased weight mechanism responsive to the speed of the associated engine, a servo-mechanism for effecting movement of the said first link about said fixed axis, an operating member for the servo-mechanism, means coupling said operating member to said weight mechanism so that movement of the weight mechanism with increasing speed will effect, through the servo-mechanism, movement of said first link in a direction to reduce the fuel supply to the engine and vice versa, said servo-mechanism acts to isolate the weight mechanism from forces acting on the control rod.