66
TROUBLESHOOTING
Trouble
Cause
Batter
y C
har
gin
g failur
e
S
tar
ter
m
ot
or
do
es
n
ot
w
or
k
Engi
ne
star
t fai
lu
re
Engi
ne
stum
bl
e or
st
al
l
Ro
ug
h id
lin
g
Idl
ing i
s t
oo
hi
gh
Poor
acc
ele
ra
tio
n
E
ngi
ne ov
er
-rev
.
E
ng
ine
o
ve
rh
ea
t
E
ng
ine
se
izing
Action
Pum
p
Drain valve(s) are
not closed
Close
securely.
Suction port
strainer clogged
with dead leaf or
waste etc.
Clean
out.
Discharge valve
imperfect open
●
Open securely.
Gauge pipe
connector loose
or gasket
defective
Tighten securely.
Replace a gasket if
necessary.
Pump cover bolts
loose
Tighten
securely.
Pump cover
O-ring
degradation
Clean out or replace.
Impeller or Guide
vane caught a
stone or damaged
Clean or replace.
Mechanical seal
damaged
Replace.
15
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
14
15
16
17
18
13
14
15
16
17
18