An hydraulic proportioning system having a fluid actuated motor with a driven
motor shaft, the motor being in fluid communication with and powered by a fluid
source. A pump is provided having a drive shaft driven by the driven motor shaft
of the fluid actuated motor, and a drive clutch interconnecting the driven motor
shaft and the drive shaft of the pump. An injector manifold is in fluid communication
with the pump which is connectable to a chemical source. A tube is in fluid communication
with the injector manifold and extends into a chamber having fluid communication
with the fluid source, the chemical and fluid from the fluid source combining in
the chamber and discharged therefrom.