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TROUBLE AND REMEDY
Pump does not
operate.
Pumping volume
is small.
Pump does not
self-prime.
Engine start failure.
(Refer to instruction manual of engine)
Blocked Impeller (Disassemble & clean)
Air leak at suction side
(Check piping at suction side)
Drop of engine output (Repair)
Damaged mechanical seal
(Replace mechanical seal)
High suction lift (Lower lift)
Thin or long or kink of hose
(Thicken or shorten or straighten hose)
Leak of water from water passage (Repair leak)
Blocked impeller (Disassemble & clean)
Wear and fear of impeller (Replace impeller)
Suction of air at suction side
(Check piping at suction side)
Insufficient priming water inside pump casing
(Prime fully) (fill up pump casing fully)
Imperfect tightening of drain cock
(Tighten the 2 plugs completely)
Imperfect revolution of engine (Repair engine)
Air leak at mechanical seal
(Replace mechanical seal)
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