Makita EW120R Instructions For Use Manual page 20

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)
− 9−
Plug (priming)