maintenance schedule DATSUN 210 1979 Service Manual

DATSUN
210
Model
8310
Series

SECTIONGI

GENERAL
INFORMATION

CONTENTS

MODEL

VARIATION

IDENTIFICATION
NUMBERS

CAR
IDENTIFICATION
PLATE

CAR
SERIAL
NUMBER

IDENTIFICATION
NUMBER
PLATE

ENGINE
SERIAL
NUMBER

COLOR
CODE

NUMBER
LABEL

M
V
S
S
CERTIFICATION

LABEL

EMISSION
CONTROL
INFORMATION

LABE
L

MANUAL

TRf
NSMISSION
NUMBER

AUTOMATIC
TRANSMISSION
NUMBER

APPROXIMATE
REFILL

CAPACITIES
GI
2

GI
3

GI
3

GI
3

GI

4

GI
4

GI
4

GI
4

GI
4

GI
4

GI

4

GI
5
RECOMMENDED
FuEL

RECOMMENDED

LUBRICANTS

RECOf
lMENDED
LUBRICANTS

RECOMMENDED
SAE
VISCOSITY

NUMBER

LUBRICATION
CHART

MAINTENANCE
SCHEDULE

LIFTING
POINTS

AND

TOWING

PANTOGRAPH

JACK

GARAGE
JA
CK
AND

SAFETY
STAND

TOWING

TIE
DOWN

SPECIAL
TOOLS

j
GI
5

GI
5

GI
5

GI
5

GI
6

Gill

j
9

GI

9

GI

eGI

9

p

G
I

O

MAiNTENANCE
OPERATION

Periodic
maintenance
should
be
performed
at
number
of

kilometers
mila
or
month
whichewr
comes
first
Kilometers
1
000

Mile
x
1
000

M
3nthl
MAINTENANCE
INTERVAL

1
6
I
12
I
24
I
36
I
48
I
60
72

111
117
611
11511122
511
30
1137
5
45

I
6
I
12
r
16
I
24
I
30
36

UNDERHOOD
MAINTENANCE

Gl
The
above
charts
show
the
normal
maintenance
schedule

Dependir
tg
upon
weather
and
atmospheric
conditions
varying
road
surfaces

individual
driving
habits
and
vehicle
usage
additionai
or
more
frequen

maintenance
may
be
required
Abbreviations
A
Adjust
R
Replace

I
Inspe
t
correct
replace

if
necessary

L
Lubricate

NOTE
1
If
vehicle
i
operated
under
evere
conditions
hort
distance
driving
extensive
idling
or
driving
in
du
ty
condition

change
angine
oil
every
5
000
km
3
000
mile
or
3
month
whlchevar
come
first

2
More
frequent
maintenance
if
under
dusty
driving
condition

3
Replace
differential
gear
oile
ery
96
000
km
60
000
mila
or
4
years
whichaver
com
first

4
If
vehicle
i
operated
in
ereas
u
ing
road
alt
or
other
corro
ive
material
inspect
evary
5
000
km
3
000
mile
or

3
months
whichever
comes
first

GI417

Fig
GI
15
Front

Towing
Hook

REAR
SIDE

Rear

towing
hooks

are

provided
on

bot
rear
sides

GI418

Fig
GI

16
Rear

Towing
Hooks

Special
Tools

play
very
important

role
in

the
maintenance
of
cars
These

are
essential
to

the
safe
accurate
and

speedy
servicing

The

working
times

listed
in

the

column
under
FLAT
RATE
TIME
in

FLAT
RATE

SCHEDULE
are
com

puted
based
on
the
use
of

Special

Tools
General

Information

CAUTION

a
Before

towing
make

sure
that
the

transmission
axles

steering
system

and

p
r
train

are
in

good
order

If

any
unit
is

damaged
a

dolly

must
be
used

If
the
transmission
is

inoperative

tow
the

car
with

the
rear
wheels
off

the

ground
or
with
the

propeller

shaft
removed

c
When
the
car
is
towed
with
its
front

wheels
on
the

ground
secure
the

steering
wheel
in
a

straight
ahead

position
with
the

ignition

key

turnedin
OFF

position

d
When

towing
an
automatic
trans

mission
model
on
its
rear
wheels

do

not
exceed

30
km
h
20
MPH

and
a

distance

of30
km

20
miles

e

Release
the

parking
brake
and
set

the

gearshift
lever
in
Neutral

position
before

starting
to

tow
the

car

TIE
DOWN

FRONT

51
DE

Use
front

towing
hooks
for
tie

down
at
the

front
side

SPECIAL

TOOLS

The

identification
code
of

ffi
linte

nance

tools
is
made

up
of
2

alphabeti

calletters
and
8
digital

figures

The

heading
two
letters

roughly

classify
tools
c

equipment
as

STOOOOOOOO

KVOOOOOOOO
Special
Tool

Special
Tool

GI
l0
REAR
SIDE

Use

rear

towing
hooks
for
tie

down

at
the

rear
side

EMOOOOOOOO

GGOOOOOOOO

lMOOOOOOOO

HTOOOOOOOO
Engine

Overhauling

Machine

General

Gauge

Garage
Tool

Hand
Tool

Refer
to

Service
Bulletin
DATSUN

210

fOJ

Special
Tool
List
and
further

information
of

Special
Tools

Engine
Tune

up

BASIC
MECHANICAL
SYSTEM

ADJUSTING
INTAKE

AND
EXHAUST

VAL
fE
CLEARANCE

Note
After

tightening
cYlinder
head

bolts

adjust
intake
and
exhaust

valve

clearances

Valve
clearance
ai
ljustment
cannot

be

made
while
the

engine
is
in

opera

tion

To

adjust
proceed
as
follows

I
Start

engine
and

warm
it

up
uritil

water

temperature
indicator

points
to

the
middle
of

gauge
Then

stop
engine

2
Rotate

crankshaft
to

bring
No
I

cylinder
in

top
dead
center
on
its

compression
stroke

3
Remove

valve
rocker

cover

Adjust
valve
clearance
at

following

four

points
while

engine
is
still
hot

CD
Exhaust
valve

of
No
I

cylinder

@
Intake
valve
of
No
I

cylinder

@
Intake
valve
of
No
2

cylinder

@
Exhaust

valve
of
No
3

cylinder

Note

Numbers
in

circle

agree
with

those
in

accompanying
sketch

tiri

Fig
ET
1

Adjusting
Value
Clearanu

4

Again
rotate
crankshaft
one
turn

so
that

No
4

piston
is
in

top
dead

center
on
its

ompression
stroke
Ad

just
following
valve

s

CID
Exhaust

valve
of
No
2

cylinder

@
Intake
valve
of
No
3

cylinder

j
Intake
valve
of
No
4

cylinder

@
Exhaust
valve
of
No
4

cylinder

Adjustment
should
be
made
while

engine
is
hot
After
all
valves
have
been

adjusted
correctly
tighten
lock

nut

firmly
to
secure
ihe

adjustment

Valve
clearance

Hot

Intake

0
35

mm
0
014

inl

Exhaust
0
35
mm

0
014

in

tJl
Tightening
torque

Valve

rocker

adjusting
nut

1
6

to
2
2

kltm

12

to
16
ft
lb

Alternator

Crankshaft

pulley

Unit
mm

in

Idler

pulley

Fig
ET
2

CHANGING
ENGINE

OIL

1

Check
if
oil
is
diluted
with
water

or

gasoline
Drain
and
refill
oil
if

necessary

Note

a
A

milky
oil
iiulicates
the

presence

of

cooling
water
Isolate
the
cause

and
take
corrective
measure

b
An
oil

with

extremely
low

viscosity

indicates
dilution
with

gasoline

2
Check

oil
level
If
below
the

specified
level
raise
it

up
to
the
H

level

3

Change
engine
oil
in

accordance

with
the
maintenance

schedule

Engine
oil

capacity

A14

With
oil
filter

3
7
liters

3
U
US

qt
3
Yo

Imp
qtl

ET3
CHECKING
AND

ADJUSTING
DRIVE

BELTS

I

Check
for

cracks
or

damage
Re

place
if

necessary

2

Normal
drive

belt
deflection
is

showndI
figure
below
when

moderate

thumb

pressure
is

applied
midway

between

pulleys

Thumb

pressure
10

kg
221bl

Idler

pulley

Compressor
p1
111ey

AC710

Checking
Drive
Belts

for
Deflection

Without
oil
filter

3
2
liters

3

USqt
2

U

ImP
ltl

A15

With
oil
filter

3
3
liters

3
US

qt
2
U

Imp
qd

Without
oil
filter

2
8
liters

3
us

qt
2

Imp
qd

REPLACING
OIL

FILTER

The
oil
filter
is
a

cartridge
type
and

can
be

removed

using
Oil
Filter

Wrench
STl9320000

I
Check
for

oil
leaks

past
gasketed

Oange
If

leakage
is

found
retighten

just
enough
to

stop
leakage
If
reo

tightening
is

no

longer
effective
re

SO

B
T

D
C
l650

rpm

Non
California
models

except
Canada

100
B
T
D
C
650

rpm

Canada
models

Note
On
FU
models

ignition
timing

is
set
under

a
condition

where

distributor
vacuum
hose
is

discon

nected

If

necessary
adjust
ignition
timing

as
follows

I
Loosen
set

screw
until
dis

tributor

c
uJ
be

moved

by
hand

2

Adjust
ignition
timing
to

speci

fications

3
Lock

distributor
set
screw
and

make
sure
that

timing
is
correct

YJ

Fig
T
9

Adjusting
Ignition
Timing

7

On
FU
models

proceed
as
fol

lows

I
Remove
blind

plug
from
dis

tributor

vacuum
hose
and
connect

hose
to

distributor

diaphragm

2
If

engine
speed
varies
in
this

state
set

idling

speed
at

specified
value

with
throttle

adjusting
screw

CHECKING
IGNITION

WIRING

Use
an
ohmmeter
to

check
resist

ance
on

high
tension

cables

1

Disconnect

cables
from

spark

plugs
and

remove
distributor

together

with

high
tension

cables

Note
Do
not

remove
cables
from

cap
Engine
Tune

up

2

Connect
the
ohmmeter

between

cable

terminal
on
the

spark
plug
side

and
the

corresponding
electrode
inside

cap

3

If
the

resistance
is

more
than

30
000
ohms
remove

cable
from

cap

and

check
the
cable
resistance

only
If

resistance

is
still
more
than
30

000

ohms

replace
c3ble

assembly

Fig
ET
IO

Checking
High
Tension

Cable

u
s
A

models

Type
FU

models

Standard

Hot

type

Cold

type

U

S
A
models
Canada

models

r
1g
mm
in
FU

models

Canada
models

Tightening
torque

kg
m
ft

lb

ET
6
Stan
rd

Hot

type

Cold

type

S
aridard

Hot

type

Cold

type
CHECKING
AND

REPLACING

SPARK

PLUGS

I
Remove

and
clean

plugs
in
a

sand

blast
cleaner

Inspect
each

spark

plug

Make
sure
that

they
are
of
the

specifi

ed

heat

range

2

Inspect
insulator
for
cracks
or

chips
Check
both

center
and

ground

electrodes

3

If

they
are

excessively
worn
re

place
with
new

spark
plugs

4

Replace
spark

plugs
in

accordance

with
the
maintenance

schedule

BP
ES
ll

L46PW

l

BP4E
ll

L47PW
ll

BP7ES
ll

BP6ES
ll

L44PW
II
L4
PW
11

BP5

EQ
13
L46PM
13

BP4EQ
13
L47PM
13

BP6EQ
13

L45PM
13

BP7EQ
13
L44PM

13

BPR5ES

BPR4ES

BPR6ES

1

0
to
1
1

LQ39
to
0

043

l
l

to
1
3
0
043
to

0
051

0
8
to

0
9
0

031
to

0
035

1
5

to
i
6

P
to
14

make

sure
throttle
valve

operates

click

sound
is
heard

or

continuity

turns
to

OFF
when

engine
speed

decrease
to

idling

If

not

adjust
throttle
valve
switch

Fig
ET
19

AdjlUting
Throttle
V
ve

Switch

FU
models

If
throttle

valve
switch

g1f1not
be

adjusted
to

specification

replace
Engine
Tune

up

Note

If
it
is
difrlCUlt
to

judge
open

tion
of
throttle
valve

switch

by

hearing
Click
sound
caused

by

microswitch
check

as
follows

1

DiscollI
ecl

throttle
va1ve

switch

ronnector

and
connect
circuit

tester
to
throttle
va1ve
switch

2

Run

engine
under

no
load

Increase

engine
speed
slowly
and
make
sure

it
is

within
the

specified
range
when

throttle
valve
switch
is
turned

on

Then
decrease

engine
speed
slowly

and
make
sure
it
is

within
the

specified
range
when
throttle
va1ve

switch
is

turned
off

If
not

adjust
throttle
valve
switch

3
Make

sure

continuity
of
throttle

vaIve
switch
turns

to
OFF
in
the

operation
desaihed

in

step
6

Engine
operation
Engine
speed
when

throttle
valve

switch

operates
Throttle

valve
switch

continuity

When

engine
speed

increases
1

150
i200

rpm

1

000
1
200

rpm
When

engine
speed

decreases

REPLACING

FUEL

FILTER

I

Check
for
a

contaminated
filter

and

water

deposit

0

9

ET011

Fig
ET
20
Fuel
Filter

All

engines
use
a

replaceable
car

tridge
type
fuel
filter
as
an

assembly

2

Replace
fuel
filter
in
accordance

with
maintenance

schedule
OFF

ON

ON

OFF

CHECKING

FUEL

LINES

Hoses

piping

connections
etc

Check
fuel
lines
for

loose
connec

tions
cracks

and
deterioration
Re

tighten
loose

connections
and

replace

any
damaged
or

deformed

parts

REPLACING
AIR

CLEANER
FILTER

Viscous

paper
type
air

cleaner
filter

does

not

require
any
cleaning
opera

tion
until

it
is

replaced
periodically

Sushing
or

blasting
operation
will

cause

clogging
and

result
in

enrich

ment
of
carburetor

mixture
and

should
never
be

conducted

Replace
air

cleaner
filter
in

accord

ance
with
maintenance

schedule

ET
10
CHECKING

AUTOMATIC

TEMPERATURE

CONTROl
AiR

CLEANER

I
Check

that
vacuum
hoses

Intake

manifold
to
3

way
connector
3

way

connector
to

temperature
sensor

3

way
connector
to
idle

compensator

temperature
sensor
to
vacuum
motor

are

securely
connected
in

C9rrect

posi

tion

2

Check
each
hose
for

cracks
or

distortion

3
Check
A
T
C

system
for
function

by
proceeding
as
follows

ConfIrm
that

engine
is
cold
before

starting
test

With

engine
stopp
d

distonnect

fresh
air

duct

Place
a

mirror
at

the
end
of
air

c1eaner
inlet

pipe
as

shown
and
check

to

see
if
air

control

valve
is
in

correct

pOsition

2J

v
7

EF210

Fig
ET
21

Inspecting
Valve
Position

Air

control

va
ve
is
in

correct

posi

tion

if
its

cold
air
inlet
is

open
and
hot

air

inlet
is

closed

4

Start

engine
and

keep
idling

Immediately
after

engine
starting

check
air
control

valve
for
correCt

position
as
described
above
In

this

case
correct

position
of
air

control

valve
is

the
reverse
of

step
3
under

hood
air
inlet
is

closed
and
hot
air

inlet

is

open

5

Check
that
air
control

valve

gradually
opens
to
cold
air
inlet

side
as

engine
warms

up
When
environmental

temperature
around

temperature

sensor
is

low

spend
more
time
for

engine

warning
up
operation
of

facili

tate
smooth

operation
of
air

control

valve

If
the

above

test
reveals

any
prob

lem

in
the

operation
of
air

control

valve

carry
out
the

further

inspection

described
in

Section
EF

R
EPIACING
AIR

PUMP
AIR

CLEANER
FILTER

Except
FU
models

and
Canada
models

When

replacing
air
cleaner
filter

remove
ir

cleane

frO
ho

od

legge

and
detach
lower

body
and
filter
as
an

assembly

ET530

Fig
ET
23

Replacing
Air
Cleaner

Filter

REPI
ACINGAIR

INDUCTION
VALVE

FILTER

FU
models

and
Canada
models

Remove

screw

securirtg
valve

to
air

cleaner
Air
induction
valve
fIlter
can

be
taken

out
easily
Replace
fIlter

periodically
in
accordance
with
main

tenance
schedule

2

C

l
11
l

r
r

EC9

Fig
ET

24
R

pklcing
Air
Induction

Value
Filter

REPLACING
P
C
V

VALVEANb
FILTER

I
Check
P

C
V
valve
as
follows

With

engine
running
at
idle
remove

the
ventilator
hose
from
P

C
V

valve

if
the
valve
is

working
a

hissing
noise

will
be
heard
as

air

passes
through
the

valve
and

a

strong
vacuum
should
be

felt

inunediately
when
a

finger
is

placed
over
valve
inlet
Engine
Tune

up

2

Replace
P
C
V
Valve
and
filter
in

accord
with
maintenance

schedul

ET531

Fig
ET
25
Replacing
P
C
V
Value

and
Filter

CHECKING

VENTILATION
HOSES

I
Check
hoses
and
hose
connec

tions
for
leaks

2
Disconnect
all
hoses
and
clean

with

compressed
air

If

any
hose
cannot
be

free
of

obstructions

replace

Confirm

that
flame
arrester
is
locat

ed

correctly
in
hose
between
rocker

cover
and
air
cleaner

ET277

Fig
ET
26

Cleaning
Ventilation
Hose

ET

12
CHECKING
VAPOR

LINES

I
Check
all
hoses
and
fuel
tank

flller

cap

2
Disconnect
vapor
vent
line
con

necting
carbon
canister
to
fuel
tank

3
Connect
3

way
connector
mana

meter
and

cock
or

equivalent
3
w

y

charge
cock
to
end
of
vent
line

ET532

Fig
ET
27
Vent
Line

4

Supply
fresh
air
into

vapor
vent

line

through
cock
little
by
little
until

pressure
become

400

mmH20
is
75

inH20

5
Shut

cock
completely
and
leave
it

unatiended

6
After
2
5
minutes

measure
height

of

liquid
in
manometer

7
Varilllion
in

height
should
remain

with
25

mmHp
0
98

inH20

8
When
filler

cap
does
not
close

completely
height
should

drop
to
zero

ih

a
short
time

9
If

height
does
not

drop
to
zero
in

a
short
time
when
filler

cap
is
re

moved
it
is

cause
of
a

stuffy
hose

Note
In
case
vent
tine
B

stuffy

breathing
in

fuel
tank
is
not

thoroughly
made
thlis

caming
in

sufficient
delivery
of
fuel
to

engine

or

vapor
lock
It
must
tberefore
be

repaired
or

replaced

TEMPERATURE
SENSOR

Removal

I

Using
pliers
flatten

clip
con

necting
vacuum

hose
to

sensor
vacuum

tube

1

Pipe

2
Catch

3
Fixed
with

adhesive

4
Hose

5
Tab

6

Clip

7
Gasket

EC019

Fig
EF
7

Removing
Seruor

2
Disconnect
hose
from

sensor

3
Take
off

clip
from
sensor
vacuum

tube
and
dismount
sensor

body
from

air
cleaner

Note

The

gasket
between

sensor
and

air

cleaner
is
bonded
to

the
air

cleaner

side
and

should
not

be

removed

Installation

Mount
sensor
on
the

specified

position

2

Insert

clip
into

vacuum
tube
of

sensor
After

installing
each
vacuum

hose

secure
hose
with
the

clip

Note
Be

sure
to
install
vacUl
11n

hose

correctly
Correct

position
is
R
H

side
to

Ntisan

mark
at
the

top

face
of
sensor
for
intake
manifold

L

H
side
for

Deuum
motor

VACUUM

MOTOR

1

Remove

screws

securing
vacuum

motor

to
air
cleaner

2

Disconnect

valve
shaft

attached

to

vacuum
motor

diaphragm
from
air

control
valve

and

remove

vacuum

motor

assembly
from
air

cleaner

3
To
install

reverse
the

removal

procedures
Engine
Fuel

Fig
EF

8
Removing
Vacuum
Motor

INSPECTION

AIR

CLEANER
FILTER

Viscous

paper

type
air

cleaner
filter

does

o
ot

rt

quire
any
cleaning
opera

tion

until
it

is

replaced
periodically

Brushing
or

blasting
operation
will

cause

clogging
and
result

in
enrich

ment

of
carburetor
mixture

and

should
never
be

conducted
For
reo

placement
interval
of
air

cleaner
filter

refer
to

Maintenance

Schedule

AUTOMATIC

TEMPERATURE

CONTROL
SYSTEM

Engine
failures

resulting
from
a

malfunctioning
A
T
C

system
are

manifest

during
cold
weather

opera

tion
Such
failures

include

Engine
stall
or
hesitation

Increase
in
fuel

consumption

Lack
of

power

If
these

phenomena
should

occur

check

A
T
e

system
as

described
in

the

following
before

carrying
out

inspection
of

carburetor

I
Check
that

vacuum
hoses
are

se

l

urely
connected
in
correct

position

2

Check
each
hose

for
cracks
or

distortion

3

Check
A
T

C

system
for

proper

function
as

follo
ys
Confirm
that

engine
is

cold
before

starting
test

With

engine
topped
disconnect

fresh
air

duct
if
so

equipped

Place
a
mirror
at
the
end

of
air

cleaner
inlet

pipe
as
shown
and

check

to
see
if
air
control
valve

is
in
correct

position

EF
4
Fig
EF
9

Inspecting
Valve
Po

man

Air
control
valve
is

in
correct

posi

tion
if
its
cold
air
inlet

is

open
and

hot

air
inlet
is

closed

4
Start

engine
and

keep
idling

Immediately
after

engine

starting

check
air
control

valve
for

correct

position
as
described
above
In

this

case
correct

position
of
air
control

valve
is

the

reverse
of

step
3

under

hood
air
inlet
is
closed

and
hot
air

inlet
is

open

S

Check
that
air
control
valve

grad

ually
opens
to

cold
air

inlet
side

as

engine
warms

up
When

environmental

temperature
around

temperature
sen

sor
is
low

spend
more
time

for

engine

warming
up
operation
to
facilitate

smooth

operation
of
air
control

valve

If
the
above

test
reveals

any
prob

lem
in
the

opera
ion
of
air
control

valve

carry
out
the

following
test

VACUUM
MOTOR

I
With

engine
stopped
confirm

that

cold
air
inlet
is

open
and

hot
air

inlet
is

c1
Sed

If
not

check
air
control
valve
link

age
for

proper
operation

2

DiscoJln
ct
ac
um

motor
inlet

vacuum
hose

and
connect

another

hose
to
the

inlet
to

apply
vacuum
to

vacuum
motor

Vacuum
can

be

appli
d

by
breathing
in

tile
hos
e
end

as

shown
Then

confirm
that

the
air

control
valve

moves

3
With
hot
air
inlet
in

open
posi

tion
as

described
in

step
2

above

pinch
vacuum
hose
with

fingers
and

cut
off
air
from

vacuum
hose
In

this

condition

check
that
air
control

valve

maintains
the

condition
described
in

step
2

for
more
than

30
seconds

and

that
hot

air
inlet

is

open
If

diaphragm

spring
actuates

the
air
control
valve

by

Air
Induction
v
lve
filter

The
air
induction
valve
filter
is

installed
at
the
dust
side
of
the
air

cleaner
It

purifies
secondary
air

to
be

sent
to
the

exhaust
tube
The
fIlter

element
should
be

replaced
periodical

ly
in
accordance
with
the
Maintenance

Schedule

EC921

Fig
EC
54
Air
Induction
Valve

Filter

Antl
beckflre
v
lve
A
B
v
lve

Tltis
valve
is

controlled

by
intake

manifold
vacuum
to

prevent
backfire

in
the

exhaust
system
at
the
initial

period
of
deceleration

At
this

period
the
mixture
in

the

intake
manifold
becomes
too
rich
to

ignite
and
burn
in

the
combustion

chamber
and
burns

easily
in
the
ex

haust

system
with

injected
air
in
the

exhaust
manifold

The
anti

backfire
valve

provides
air

to
the
intake

manifold
to
make
the

air
fuel
mixture
leaner
and

prevents

backfire

If

the
valve
does
not
work

properly

unburned
ntixture
will
be

emitted

from

the
combustion
chambers
and

burns
with
the
aid
of

high
temperature

and

injected
air
which

causes
backfrre

To
intake

manifold

vacuum

To
intake

manifold

From
air

cleaner

EC069

Fig
EC
55
Anti

backfire
Value
Emission
Control

System

Air
Induction
Into
exhaust

port

The

secondary
air
fed
from
the
air

induction
valve

goes
through
the
check

valve
to
the
air

gallery
in

the

cylinder

head
It
is
then

distributed
to

each

exhaust

port
and

injected
near
the

exhaust
valve

I
Air

gallery

2
Exhaust

port

3
Exhaust
manifold

EC316

Fig
EC
56
Sectional
View

of

Exhaust
Port

REMOVAL
AND

INSTALLATION

Air
Induction
valve
and
filter

Remove
the
screws

securing
the

valve
and
filter
to
the
air

cleaner
body

The
air
induction
valve
and
valve
filter

can
then
be
taken

out

easily
Installa

tion
is
in
the
reverse

sequence
of

removal

EC922

Fig
EC
57

Removing
Air
Induction

Valve
and
Filter

EC
19
Air
Induction

pipe

Loosen
out
a

nut
securing
the

pipe

to

the

engine
cylinder
head
At
the

same
time
remove
the
screws

securing

the
bracket
and
rubber
hose

clamp

The
air
induction

pipe
can
then
be

taken
out
Installation
is
in
the
reverse

sequence
of
removal

Fig
EC
58

A
B
valve

The
A
B
valve
is
located
at
the

rear

side
of
the
air
cleaner
Remove

the
air

hoses
and
vacuum
tube

The
A
B
valve

can
then
be

taken

out
Installation
is
in
the

reverse
se

quence
of
removal

EC152A

Fig
EC
59

Removing
A
B
Valve

INSPECTION

Preliminary
Inspection

Check
hose
for
looseness

flatting

damage
or

faulty
connections
and

each

part
for

proper
installation
If

necessary

replace

Air
Induction
valve
and
filter

I
Disconnect
air
induction
hose
at

air
induction

pipe
side
Suck
or
blow

hose
to
make
sure
that
air

flows

only

on
the
air

induction

pipe
side

EC924

Fig
EC

60
Checking
Air
Induction

Valve

2

Check
air
induction
valve
reed

valve
for

binding
or

damage
At
the

same
time
check
filter
for

damage
or

plugging
If

necessary
replace
Filter

should
be

replaced
periodically
in
ac

cordance
with
Maintenance
Schedule
Emission

Control

System

1
Air
induction
valve
filter

2

Air
induction
valve

EC925

Fig
EC
6I
Checking
Air
Induction

Valve
and
Filter

Anti
backfire
valve
A
B
alve

I
Warm

up
engine
thoroughly

2
Disconnect
hose
from
air
cleaner

EC
20
and

place
aflriger
near
tneoutlet

3

Run

engine
at
about
3

000

rpm

under
no
load
then

quickly
return
it

to
idling
If

you
feel
a

pull
or

suction

force

on

your
finger
the
anti
J
ackfire

valve
is

functioning

normally
If
no

suction
is
felt

replace
the
anti
backfire

valve

eC76S

Fig
EC
62

Checking
Anti
bock
ire

Valve