Where this fits
The Felsted Electronic Vernier (EV2) has been designed to provide precise, variable engine speed adjustment on electronically controlled stationary engines, or from a remote operating position on mobile equipment. The EV2 is engineered for capability with most electronically controlled diesel engines and is easy to operate, even with gloves on.
Additional information
The large 2-1/4 inch diameter knob provides continuous engine speed regulation from idle to wide open throttle in seven full turns, providing fine engine speed adjustment. To prevent accidental over-revving, the EV2 cannot be pulled to the wide open throttle position; it must be turned. It also offers a quick shutdown feature activated by pushing in the knob, plus an adjustable friction collar to prevent accidental changes in engine speed. When a change in engine speed is desired, the friction collar may be loosened. The EV2 requires a .78 inch diameter drilled hole, only 4.5 inch clearance behind the dash panel, and is pre-set at the factory with no field adjustment necessary. The potentiometer unit is sealed for protection against moisture and contaminants.