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When
ItS re
employment by recondltIOmng
IS
unavOIdable
add matenal
to
the
rocker
arm
and lInk
by weldIng
and
fInISh them WIth
a
fIle
but
tms
cannot
last
long
and
IS no more
than
a
temporary
measure
Renew the
arm
pIn when
It
IS
found
worn
excessIvely
The
dIaphragm
spnng
arm
spnng
seldom become
faulty
but when weakened
replace
them
always
with
standard
ones
If the
dIaphragm
spnng
IS
too stron
It
results
In
overflow of
the
float cham
ber of the carburetor
The
tenSIOn
of the spnng
must
not
be
strengthened
or
weakened
arbItranly
by
hand
Check
to see
If there
IS
any warp
on
the
JOInt surfaces
of
the cap and
body
and
after
dIsassemblIng
IS over
renew
the
gasket
to
keep
ItS alr
tIghteness
Reassembling
Installing
Employ
standard
sprIngs
for
the
varIOUS uses as
stated before
Install
valves
precIsely
for close
contact wIth
theIr respectIve
seats
In
screwIng
In
of
upper and lower bodIes and
dIaphragm
fIt them
together
accordmg
to
the marks
WhClh
were
put
before the
dIsassemblIng
and
alIgn
one
screwmg hole
to Its
mate
and then
screw In at
the pOSItIOn where the
dIaphragm
IS
fully pulled
down
WIth the rocker
arm
pushed
towards
the SIde of the
body by
and pressure
Do
not screw In
tIght
one
by
one SInce It causes
warpIng
lnstead
clamp
all
the
screws
round
loosely
and
umformly
Then
tIghten
them
dIagonally
and
lastly
re
tIghten
all
of
them
In
order
to
make
sure
As
a
general
rule
gaskets
should be
replaced by
new ones
InstallatIon
on
the engIne
IS
done
In
the
reverse
order
to
that for
dIsassembly
Be
sure to set
the
rocker
arm so
that
It IS
contactIng
the
eccentrIC
of camshaft
properly
not
the
rear
SIde
or
to
one
SIde
Replace
the
gasket
between
the
cylInder
block
and
pump WIth
a new
standard
one
Checking
Function
When repaIrs of the pump
IS over
or
before
It
IS
Installed
on
the
engIne
make
a
check
to see
When
a vacuum
gauge
IS
connected
to
the pump
Inlet
port and the pump
IS
mounted
on a
tester
the rocker
arm IS
actIvated
by
the
eccentnc
of
the camshaft
revolVIng
at
1000 rpm
Then the gauge pressure should
nse to
mgher
than 400
mm
of
mercury column
and
even
If operatIon
IS
dIscontInued
thIS condItIOn
should
r e ma1l 1 tt
more
than 3 seconds
When
a
gauge
or tester IS
not
avaIlable
test
In
the
follOWIng
way
Clost the Inlet port
and
outlet port
wIth
fInger
tIps
Then
after
operatIng
the
rocker
arm
several
tImes
suddenly
release the
fIngers
The pump
IS
11
good
COndItIOnS If
3
to
5 seconds thence
there
can
be
heard
strong
Inlet and outlet
nOIse
respectIvely
The pump
IS
mechanIcally
fIt for
use
when
by
connectIng
a
hose
to
the
Inlet
port
It IS
able
to
draw up
gasolIne
from
a
heIght
of
more
than
O 5
m
After
InstallIng
the pump
test
ItS
functIOns
dunng
operatIon
63
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