CHECK PRIMING WATER
It is recommended that the water chamber of pump casing should be primed with full of water before operating.
WARNING
Never attempt to operate the pump without priming water or the pump will overheat. Extended dry operation will destroy the mechanical seal. If the unit has been operated dry, stop the engine immediately and allow the pump to cool before adding priming water.
Plug (priming)
Plug 
(priming)
