Page 19 - Webster Service Manual

Vacuum gauge check usually covers the suction side of
the system.
Pressure gauge determines efficiency of pumping gears
and valve. The valve can be serviced in the field. Worn
pumping elements require the removal of the fuel unit.
Though these instructions may seem obvious, strict
adherence to the sequence given can save valuable
service time when time is of importance.
Metering Pump for the air atomized waste oil burner
market. Variable flow rates vs. RPM. Clockwise rotation
looking at shaft V iton seal. This unit is comparable to
the Suntec A2RA-7710 Pump.