61
16. TROUBLESHOOTING
Trouble
Cause
Ba
tte
ry c
ha
rgin
g f
ailu
re
Sta
rte
r m
oto
r d
oe
sn
't w
ork
En
gin
e s
tar
t fa
ilu
re
En
gin
e s
tu
m
ble
o
r s
tall
Ro
ug
h id
lin
g
Id
lin
g r
ev
olu
tio
n is
to
o h
igh
Po
or
ac
ce
ler
atio
n
En
gin
e o
ve
r-r
ev
olu
tio
n
En
gin
e o
ve
rh
ea
t
En
gin
e s
eiz
ing
Va
cu
um
p
re
ssu
re
d
efe
ctiv
e
Air
le
ak
ing
W
ate
r s
uc
tio
n f
ailu
re
Ins
uff
icie
nt
wa
te
r
dis
ch
arg
e
Flo
od
lig
ht,
G
au
ge
la
m
p, H
ou
r m
ete
r,
W
arn
ing
la
m
p d
o
no
t w
ork
W
arn
ing
la
m
p f
las
hin
g
Action
Ca
us
ed
b
y S
uc
tio
n
Ca
us
ed
b
y P
um
p u
nit
Ca
us
ed
b
y P
lay
pip
e
Ca
us
ed
b
y E
ng
ine
u
nit
S
uc
tio
n
Suction hose
strainer
clogged with
dead leaf or
waste etc.
● ●
Clean out.
Suction hose
cracking or
lining peeling
off
● ● ● ●
Repair or replace.
P
rim
er
Vacuum pipe
loose or
cracking
●
●
Tighten securely a
clump of vacuum
pipe or replace.
Strainer cap
loose or O-
ring failure.
●
●
Tighten securely
or replace.
V belt
damaged or
worn.
●
●
Replace.
Vacuum pump
rotor shaft
seizing
●
Repair or replace.
Vane, side
plate worn or
damaged
●
●
Replace.
W
ate
r s
to
p v
alv
e
Water stop
valve
contamination.
● ● ●
Clean out.
Water stop
valve
diaphragm
failure.
● ● ●
Replace.
