30
PUMP
No Pump Output
Possible Cause
Correction
1.
Check
pump
chamber.
Pump not primed.
Prime the pump (p. 14).
Hose collapsed, cut or
punctured.
Replace suction hose
(p. 13).
Strainer not completely
underwater.
Sink the strainer and
the end of a suction
hose
completely
underwater.
Air leak at connector.
Replace sealing washer
if missing or damaged.
Tighten hose connector
and clamp (p. 13, 14).
2. Check suction hose.
Strainer clogged.
Clean
debris
from
strainer.
3. Measure suction and
discharge head.
Excessive head.
Relocate pump and/or
hoses to reduce head
(p. 12, 31).
4. Check engine.
Engine lacks power.
See page 29.
Low Pump Output Possible Cause
Correction
Hose collapsed, damaged,
too long, or diameter too
small.
Replace suction hose
(p. 13).
Air leak at connector.
Replace
sealing
washer if missing or
damaged. Tighten hose
connector and clamp
(p. 13, 14).
1. Check suction
hose.
Strainer clogged.
Clean
debris
from
strainer.
2. Check discharge
hose.
Hose damaged, too long,
or diameter too small.
Replace
discharge
hose (p. 14).
3. Measure suction
and
discharge
head.
Marginal head.
Relocate pump and/or
hoses to reduce head
(p. 12, 31).
4. Check engine.
Engine lacks power.
See page 29.