63
TROUBLESHOOTING
Trouble
Cause
Vacuum
pr
essur
e def
ec
tive
A
ir l
eak
ing
Wa
te
r su
ction
fa
ilu
re
Insufficie
nt
,w
ater
di
schar
ge
Fl
oodl
ight
, Ga
ug
e l
am
p, d
o n
ot w
ork
Action
C
aused
by suc
tio
n
C
au
se
d b
y P
um
p u
nit
C
aused
by Pl
aypi
pe
C
aused
by Engi
ne u
nit
Co
mp
re
ssio
n
Piston, piston ring
or cylinder
excessively worn
●
Correct or replace.
Carbon deposition
in the combustion
chamber
●
Clean out.
Sucti
on
Suction height too
high or length too
long
●
Make it pump location to
nearer and/or lower
position.
Suction hose end is
not in water
●
● ● ●
Put the end of suction
hose below 300mm
(11.8 in) of the surface of
the water.
Suction hose
coupling loose or
gasket defective
●
● ● ●
Clean out a gasket and
tighten securely.
Replace a gasket if
necessary.
Suction hose
strainer clogged
with dead leaf or
waste etc.
● ●
Clean
out.
Suction hose
cracking or Lining
peeling off
●
● ● ●
Repair
or
replace.
15
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