AMT 2S5P, Owner'S Manual

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TROUBLES AND THEIR CURES
If difficulties are experienced, in the majority of cases
they can be traced to well-known causes. We suggest
you check these points first to save needless expense.
If the pump fails to prime: (A) Make sure the pump
casing is full of cool liquid. (B) If difficulty continues,
remove suction hose, start engine and hold a flat piece
of rubber sheet, or other suitable material against the
suction inlet. If the pump develops a strong pull
against the material, the trouble is not in the pump. If
there is no pull, the shaft seal may need replacing.
(C)
Examine suction hose or pipe connections. Air leaks in
the suction line and connection to the pump are the
most frequent causes of priming trouble. Use new
gaskets in hose coupling. New couplings sometimes
require 2 gaskets. Lining of hose may also become
loose and clog the hose.
(D) Keep pump as close to
the level of the liquid being pumped. It will give best
performance on suction lifts less than 15 feet.
(E) Be
sure strainer is not clogged. (F) There are no parts or
valves to become clogged or out of adjustment. The
only requirement is that the pump case is full of liquid.
(G) Keep your pump unit clean and properly serviced.
Care in this respect will repay in many years of
trouble-free operation.