oil type DATSUN 510 1968 Service Repair Manual

ENGINE
AND
IGNITION
TUNE
UP
21

many
types
of
test

eqUipment
and

may
be
used

as
a

gUide
If
the
manufacturer

s

mstructioQs
are

not
aVailable
Connections
shown
in

Figure
1

are
as
follows

1
Voltmeter

a
PosItive
lead
to
resistor
side
of
COli

b

Negative
1
ead
to

ground

2

Tlmmg
Light

a
PosItive
lead
to

posItive
battery
termmal

b

Tngger
lead
to
number
1

spark
plug

c

Negative
lead
to

ground

3
Tachometer

a
PosItive

lead
to
dlstnbutor
Side
of
coil

b

Negative
lead
to

ground

4
Dwell
Meter

a

PosItive
lead
to
dlstnbutor
Side
of
COlI

b

Negative
lead
to

ground

BAlTERY
INSPECTION
AND
SERVICE

1
Check
the
level
of
the

electrolyte
m

battery

cells
If

necessary
replemsh
with
distilled
water

Do
not
overfill

2

Measure
the

speCific
gravity
of
the

battery

electrolyte
Refer
to
the

followmg
table
2
Use
the

proper
size
socket
and
wrench
to

remove

spark
plugs
from
the

cyhnder
head

Make
certam
that
the

gaskets
are
removed
from

the

spark
plug
holes

3

Wipe
off
the
msulator
With
a
clean

rag
to

remove

grease
and
dirt

4

Carefully

mspect
the
msulator
and

body
of

each

plug
for

signs
of

cracks
or

chips

Replace

If

faulty

5

Inspect
spark
plug
threads
and
electrodes
for

damage
or
excessive
wear

Replace
as

requrred

Figure
2
shows
the

cond1t
J
on
of

normal
and
de

fectIVe

spark
plugs
along
with

an

explanation

of
the

causes
of

the
abnormal
conditions

6
If
the

spark
plugs
are
still
serviceable
clean

them

thoroughly
With
a

stiff
brush
or

preferably

With
a
sand

blasting
type
of
cleaner

7
File
the

center
electrode

so
that

It
has

a
fiat

surface

8
File
the
surfaces
of
the
outer
electrode

so
that

all
surfaces

are
fiat
and
smooth

9

Usmg
a
feeler

gauge
adjust
clearance
be

tween
the
electrodes
to
0
031
to
0
035
m
0
8

to
0
9mm
as
shown
m

Figure
3

Full

Charge
Value

CD
68

degrees
F

PermiSSIble
Value
20

degrees
C
3

Frigid
chmates

Tropical
chmates

Other
climates
Over
1
22

Over
118

Over
1
20
128

123

126

3
Clean

top
of

battery
and
termmals
With
a

solutIOn
of

bakmg
soda
and
water
Rmse
off
and

dry
thoroughly
Top
of

battery
must
be
clean
to

prevent
current

leakage
between
termmal
and

from

pOSitive
termmal
to
hold
down

clamp
Pro

longed
accumulatIOn
of
aCid
and
dirt
on

top
of

battery
may
cause

blIstenng
of
the
matenal
cov

enng
on
the
connector

straps
and
detenoration

of
the

straps
themselves

4

Tighten
the
cable

connectors
to
the
termmal

securely

5
Coat
the
termmals

lIghtly
With

petrolatum
to

protect
them
from
corrosion

SPARK
PLUGS
INSPECTION

AND
SERVICE

1
Remove

spark
plug
WIres
Mark
them
to
fi

sure
correct

replacement
J

J

I

I

j

j

10
Remstall

spark
plugs
Make
certam
to
use

a
new

gasket
for
each

plug
Use
a

torque
wrench

to

tighten
spark
plugs
from
11
0
to
150
ft
lb

1
5
to
2
0

kg
m

11
Remstall
WIres

DISTRIBUTOR
INSPECTION

AND
SERVICE

Dependmg
on
the
model

year
velucles
have

a

smgle
pomt
or
a
dual

pomt
dlstnbutor

system

22
CHAPTER

FOUR

CD

Normal

plug

appearance
noted

by
the
brown
to

graYish
tan

deposits
and

slight
electrode

wear
This

plug
rndlcates
the
correct

plug
heat

range
and

proper
air
fuel
ratio

f

j

l

Carbon

fouling

dlstrngUlshed
by
dry
fluffy
black

carbon

deposits
which

may
be
caused

by
an
over

nch
alr
fuel
mixture
excessIVe

hand

chokrng

clogged
air
filter

or
excessive
Idling

lJ
6

1

4i

Z

011

fouling
rndlcated

by
wet

OIly

depOSits
caused

by
011

pumprng
past
worn

rrngs
or
down
the
rntake

valve

gUides
A
hotter

plug
temporanly
reduces
011

depOSits
but
a

plug
that
IS

too
hot
leads
to

pre

IgmtlOn
and

possible
engrne
damage
Red
brown

yellow
and
white

coatrngs
caused

by

fuel
and
011
additives
These

depOSits
are
not
harm

ful
If

they
remarn

rn
a

powdery
form

C

I

Shrny
yellow
glaze
on
rnsulator

cone
IS
caused

when

the

powdery
depOSits
from
fuel
and
011
additives

melt

Meltrng
occurs
dunng
hard

acceleration
after

prolonged
Idling
This

glaze
conducts

electnclty

and
shorts

out
the

plug

Overheated

plug
rndlcated

by
burned
or
blistered

rnsulator

tip
and

badly
worn
electrodes
This
condl

bon

may
be
caused

by
pre
Igmtlon
cooling
system

defects
lean
air

fuel
ratiOS
low
octane
fuel
or
over

advanced

Igmbon
bmrng

Spark
plug
condition

photos
courtesy
of
At

Spark
Plug
DIvision
General
Motors

Corporation

The

procedures

given
below
would

generally

apply
to
eIther

type
In
the
dual

pomt
system

one
set
of

pomts
IS
known
as
the
advance
set

and
the
other
the
retard
set

Complete
details

are

given
m

Chapter
Nme

Figure
4
IS
a
detaIl

of

the
dual

pomt

system

1
Remove
dIStnutor

cap
Clean

It

carefully
to

remove

grease
or
dIrt

2
Examme
the
mSIde
of
the

cap
for
d1rt
or
ex

ceSSIve
wear
Look
for

SIgns
of
carbon
tracks
arcmg
from
contact
to
contact
mSIde
the
dIS

trIbutor

cap
Carbon
tracks
mdlcate
defects
or

cracks
and
If
found
the

cap
should
be

replaced

3
Remove
the
rotor
and

mspect
for
exceSSIve

wear
around
the

top
metal
contact

wiper
surface

If

defectlve
replace
As

a
matter
of

good

prac

nce
the

rotor
should
be

replaced
whenever
the

contact

pomts
are

replaced

4
Use
a
screwdriver
to

gently
open
the
contact

pomts
If

they
show
wear
or

plttmg
remove
the

I

7
r

28

CHAPTER
FIVE

011

gallery
supphes
011
to
the
crankshaft
mam

beanngs
Dnlled

passages
m
the
crankshaft

direct
oil
from
the

mam

bearings
to
the

con

nectmg
rod

beanngs
011

mJected
from

jet
holes

in
the

connectIng
rods

IS
directed

to
the

cylmder

walls
and

piston
pins
0U
dlstnbuted
from
the

mam

gallery
enters
the
cham
tensioner
The

pad

IS
held

against
the
cham

by
011

pressure
and

spnng
tension
The

tmung
chain
receives
011

through
the

Jet
located
near
It

LubncatIon
IS

supphed
to
the

cyhnder
head

mam
011

gallery
through
the
crankshaft
center

beanngs
Camshaft

beanngs
on
the

cyhnder

head

are
fed

directly
from
the

cyhnder
head

mam

gallery
The
rocker

arms
and
valves
are

lubncated

intermittently

by
the
camshaft
011

gallery
and
the

small
channel
at
the
base
CIrcle

portIon
of
each
cam
OllIS

supphed
to
the
cam

shaft
011

gallery
through
the
No
2
and
No
3

camshaft

bearings

OIL
PUMP

The
011

pump
IS
mstalled
m
the
bottom
of

the

front
cover
as
shown
in
2
The

pump
is

held
m

place
by
four
bolts
to
the
front
cover
It

IS
a
rotor

type
dnven

by
the
011

pump
spmdle

whIch
IS
dnven
off
of
the
crankshaft
Pressure
IS

regulated
by
a
valve
shown

m

Figure
3
A
slot

at
the

top
of
the
dnve
rotor

engages
a

dog
clutch

at
the
lower
end
of
the
distnbutor
dnve
shaft

assembly
The

011

pressure
rehef
valve

IS
not

adjustable
In
the
released

pOSition
the
valve

pernnts
011
to
be

by
passed
through
a

passage
on

the

pump
cover
to
the
mlet
Side
of

the

pump

CD
CD

Oil

Pump
Removal

1
Remove
the
dIStnbutor
from
the

top
of
the

front

cover
Make
certam
to
mark
the

posItIon

of
the

dtstnbutor
relative
to
the

front
cover
so

that

It
can
be

replaced
m
the

same

posItIon

2
Drain
the

engme
od

3
Remove
the
front
stabIhzer
from
the
bottom

front
of
the

engme
compartment

4
Remove
the
front

splash
shIeld
from
the
bot

tom
front
of
the

engine
compartment

5
Remove
the
bolts

holdmg
the
oil

pump
to

the

front
cover
Remove
011

pump
and
drive

gear

spmdle
from
the
front
cover

Disassembly
Inspection
Repair
and

Assembly

Figure
4
IS
an

exploded
VIew
of
the
011

pump

assembly
Refer
to
the

figure
and
the

accom

panymg
index

1

Separate
the

body
cover
from
the

011

pump

body
by

unscreWIng
the

secunng
bolt

2
Remove
the

pump
dnve
mechamsm
and

dnver

gear
from
the

pump
body
Clean
the
dIS

assembled

parts
m
a
suitable
solvent

3

Inspect
for

Signs
of
wear
or

damage
Reparr

or

replace
as

necessary

4

Inspect
the
drive
rotor
shaft
for

excessive

wear
or

sconng
Check
the

followmg
clearances

a
Side

clearance
between
mner
and
outer

rotor
00020
to
00047
m
005
to

0
12mm

b

Tip
clearance
0
0492

m
0
12mm

c
elearance
between

outer
rotor
and

body

00059

to
0
0083
in
015
to
0
21mm

5
Check
the
relief
valve

spring
dtmenslOn
to

ensure
that
It
has
not
lost
tension

Free

length

should
be
2
24

m
57mm

Compressed

length

30
CHAPTER
FIVE

should
be
1
54
m
39mm
If
the

spnng
tension

is

accurate
the
rehef

valve
should

open
at
54
0

to
59
7
lb

1m
3

8
to
4
2

kg
cm

6
Reassemble
the
oil

pump
Make
certain
all

gaskets
are
mounted
flat

to
avoid
leaks

7
Install
the
dnve

spindle
and
the
oil

pump
to

the
front
cover

8
Install
the
distnbutor
in
the
same
relative

locallon
from
which
it
was
removed
If
the
num

ber
1

cyhnder
was
at

top
dead
center
on
the

compression
stroke
the

punch
mark
on
the
dnve

spindle
should
face
toward
the
front
of
the

engine

9
Install
the
front

splash
shield
and
the
front

stablhzer

10

Insert
the
drain

plug
in
the

pan
and
refill

the

engme

11
Oil

pressure
at
idle
should
be
142
to
17
1

lb

lin
1
0
to
1
2

kg
cm

12

Tlghtenmg
torque
values
for
the
oil

pump

mounting
bolts
is
10
8
to
152ft
lb
1
5
to
2
1

kg
m
and
21
69
to
25
31
ft
lb
3
0
to

25

kg
m

for
the
release

valve

cap
nut

Oil

Filter

The
oil
filter
is
mounted
on
the

nght
hand
side

of
the

cyhnder
block
It

IS
a

cartndge
type
with
built
m

gasket
and
threads
onto
the

mounting

spindle
The
filter
should
be

replaced
every

6
000
miles
as
follows

1
Dram
the

engme
oil
Walt
10
15
minutes

before

removmg
oil
filter

to
allow
It
to
dram

2

By
hand

or
with
the
aid
of

an
oil
filter

wrench

unscrew
the
filter
from
the

spmdle
as

shown

m

Figure
S

3

Cleanmg
of
the

oil
filter

IS
not
recommended

Rather

replace
It
as

reqUIred

4
Thread
the
new
oil
filter
onto
the

mounting

spindle
by
hand
Do
not

overtighten
or

leakage

nught
occur

34

CHAPTER
SIX

Figure
4B
shows
the
crankshaft
and

piston
as

semblIes
m
an

exploded
VIew

PISTONS
AND
CONNECTING
RODS

The

pistons
shown
m

Figure
5
are

cast
alum

mum
With
concave
heads
The

piston
pms
are

hollow
steel
and
are
connected

to
the

pistons
m

a

full

floatmg
fit
Th

piston
pms
are

press
fitted

to
the

connectIng
rods

which
are
made
of

forged

steel

CD

l

o

o

o

CYLINDER
HEAD

The

cylInder
head

Figure
6A

is
an
aluminum

alloy
that

provides
added

coolmg
effiCiency
An

exploded
VIew
of
the

cylInder
head
and
asso

ciated

parts
is

given
in

Figure
6B

page
36

In

take
valve
seats

are
an
alummum
bronze

alloy

while
exhaust

valve
seats

are
cast
iron
All
seats

are
hot

press
fitted
mto
the
alummum

head

0A
CAMSHAFr

Figure
7
shows

the
cast
Iron

camshaft
located

inSide
the

rocker
arm
cover
Four
alummum

alloy
brackets

support
the
camshaft
m
the

cyl

mder
head

CD

VALVE
MECHANISM

Figure
8

page
37

IS
an

exploded
VIew
of
the

valve
camshaft
and

t1mmg
gear
mechanism

The
valve

system
has

pivot
type
rocker

arms

activated

directly
by
the
camshaft
mechanIsm

The
valves
are
fitted
with
dual

spnngs

CAMSHAFI

DRIVE

The
camshaft
IS
dnven

by
a
double

row
roller

cham
from
the
crankshaft
The
camshaft
dnve

mechanIsm
IS
shown
m

Figure
9
The

tensIOn

of
the
cham
IS
controlled

by
a
cham

tensioner

operated
by

spnng
and
oil

pressure
A
rubber

CD

36
CHAPTER
SIX

0B

34

35

2224
19

21

p
7

31

13

4

7

O

41

rlj
17

11
lOlL
JET

2
Intake
valve

Insert

3
Exhaust
valve
Insert

4
Intake
valve

guide

5
Exhaust
valve

guide
3
2

7
Od

gallery
taper
plug
I

441
J

8

Cylinder
blind

plug

9

Cylinder
blind

plug

10

Taper
plug
21
Washer
34
Rocker
cover

44

Spnng
washer

11

Cylinder
head
011

jet
22
Front
head
cover
35
Rocker
cover

gasket
45
Water
outlet

12
stud
23
Bolt
36
Od
filler

cap
46
JOint
washer

13
stud
24
Front
cover
head

gasket
37
011

cap
paclung
47
stud

14
stud
28
Hex
bolt
38
Rocker
cover
bolt
48
Hex
nut

15
Stud
29
lock

washer
spring
39

Thennostat
a5sem
bly
49

Spring
washer

17
Cylinder
head

gasket
30

Engine
front

Slinger
40
Thennostat
hOUSing
50
Water

temperature

gauge

18

Cylinder
head
bolt
31

Engine
rear

slinger
41
Thennostat

gasket
51
Water

temperature
ground
nut

19

Cylinder
head
bolt
32

Spnng
washer
42
Hex
bolt
53
Cam
bracket
bolt

20

Cylinder
head
bolt
33
Hex
nut
43

Hex
bolt
54
Cam
bracket
bolt

shoe

type
of
tensIOner
reduces
vibration

and

controls
overall
cham

tenSIOn

MANIFOLDS

The
intake
and
exhaust
manifolds
are
shown

in

Figure
10
The
intake
mamfold
IS

made
out

of
cast
aluminum
and
the

eXhaustof
casn
roir

OIL
PUMP

The
oil

pump
is
mounted
to
the
bottom
left

hand
side

of
the
front

cover
Refer
to
the

pre
@

38

CHAPTER
SIX

EMISSION

CONTROL
DEVICES

All

Datsuns
have
a
sealed

type
of
crankcase

emISSion
control
device
and
an
exhaust
emISsion

control
deVice
Models
sold

m
Cahfornla

smce

1970
also
have
an

evaporative
emisSion

control

deVice
An

rmportant
part
of
the

exhaust
control

device
is
the
air

pump
located

at
the

bottom
left

hand
side
of
the

engme
It

IS
dnven

by
a
belt
off

of
the
crankshaft

pulley
and

supphes
air
to
the

exhaust

system
In
1972

an
electric
blower
in

corporated
m
the

air
cleaner

replaced
the

mechanical

pumI

ENGINE
REMOVAL

Expenence
has

shown
It
IS
easier

to
remove

the

engine
and

the
transmission

as
a

smgle
UnIt

than

to
remove
the

engme
alone
Once

the
en

gine
and

transmiSSIon
are

out
of

the
vehIcle
the

tranSmIssion
can
be

detached
from
the

engme

To
remove
the

engme
transmISsion

proceed

as
follows

1
Scribe

ahgnment
marks
on
the
hood

around

the

hmges
ThIS

will
make
remstallatlon

eaSIer

2
Remove
the

two
bolts
that
secure

each

hInge

and

remove
the
hood

It
is

not

necessary
to
re

move
the
hood

support
from

the

engme
firewall

3

DISconnect
the
lower

radIator
hose

from
the

right
hand
SIde
of
the

engine
and
at
the
bottom

of
the
radIator
ThIS
will

pernnt
coolant
to
dram

from
the

engme
and
the

radIator

4

Remove
the
draIn

plugs
from
the

engine

pan

and
translIDSsIon

and

completely
dram
lubn

cants
Into
suitable

contamers

5
DISconnect

the

battery
cables
from

the
bat

tery
loosen

the
two
hold
down

clamps
and

re

move

the

battery

NOTE

The
location
and

number

of

hoses

to
be
removed

from
the
air

cleaner
varies

from
model
to

model

It
IS

normally
easier
to
remove

the

hoses

from
the
sources
rather

than

try

to

dISconnect

them

from

yndemeath

the

air

cleaner
The
1972
model

Will

requlre
dlsconnectlOn

of
the
electrica1

cirCUit

In
the
air

cleaner

system
wing
nut
from
the

top
of
the
air
cleaner
and

remove
the

aIr
cleaner

7
DIsconnect
the

upper
radiator
hose
from
the

radiator
and
the
thermostat

housmg
Remove

the
hose

8
Disconnect
the
two
heater

hoses
from

the

nght
hand
side
of
the

engme
TIe
these
bac
so

they
won
t
interfere
with

removal
of
the

engme

9
Remove
the
radIator

grille

by
unscrewing
all

mountmg
screws

10
Remove
the
four

mounting
screws

holding

the
fan
shield
to
the
backside

of
the

radiator

11
Remove
the
four

mountmg
bolts

holdIng
the

radiator

In

place
In
automatic
tranSmISsion

models
dISconnect

the
two
transnnsslOn
oIl

cooler

lInes
from

the
bottom
of
the
radiator

Pull
the

radiator

straight
up
to
remove
Remove

the
fan

shield

12
Loosen

the

adjustment
and

mounting
bolts

from

the

retamIng
brackets
on
the
alternator

and

air

pump
If
so

eqwpped
The

alternator
is
lo

cated
at
the
bottom

nght
hand
Side
of
the

engme

and
the
air

pump
on
the

lower
left
hand
Side

13
Loosen
tenSIon

on
the

two
dnve
belts

re

move
the
belts
from

the
alternator
and
air

pump

and
then
from
the

fan

pulleys

14
Remove
the
bolts

holdIng
the
fan
and

pulley

to
the
water

pump
assembly
and
remove
the

fan
and

pulley

15

DISconnect
the
fuel
hne
from
the
fuel

pump

16
DIsco

ect
accelerator

control

linkage
and

choke

WIre
at
the
carburetor

17
Disconnect

the

wiring
from

the
starter

motor
alternator

Ignition
coIl
oIl

pressure

switch

and

temperature

transmItting
unit

NOTE
The

following

steps
are

per

formed

from
under
the
car
lack

up

the

front
of
the

car
and

position

stands
under

the

front
support

points

to

proVide

working
room

under

the

vehicle

WARNING

Never

climb
under
a
vehicle
that
is

supported
by
the

lack
only
If
stands

are

not
avflllable

sturdy
wooden

blocks
can

be
U3ed

6
Disconnect
all
hoses

that
lead
to
the

air

cleaner

remove
two

bolts
that
hold
the
air

cleaner
to

its

mountmg
bracket

unscrew
the
18
Remove
two
bolts

holdIng
the
clutch

operat

Ing
cylInder
to
the

flywheel
hOUSIng
shown

m

56

CHAPTER
SIX

NOTE
Lubncate
the

cylinder
walls

with
new

engine
oil

prior
to
insertIOn

of
pistOns
Make

certain
that
the

ring

gaps
are
not
In
line

wIth
one
another

Place

the

gaps
180

degrees
from
each

other

and
not

posltloned
either

front

to
back
or

dIrectly
in
line
with

the

piston
pIns

CAUTION

Use
extreme
care
when

Inserting
pzs

tons
so
as
to
avoId

crankshaft

damage

14
With
the
aid
of

a

nng
compressor
illStaIl

the

pISton
and

connectmg
rod
assembhes
into

the

cyhnder
block

as
shown
in

Figure
60
Make

certain
the

proper
piston
IS
mserted
mto
the

proper
hner
and
the
F
on
each

pISton
faces

forward

@

15
Install

beanngs
mto
the

connectIng
rod

caps

after

lubncatmg
them

hghtly

16

Gently
push
connecting
rods
With

beanngs

installed
down
the

cyhnder
until
contact

IS
made

with
the
crankshaft

17
Set

connectIng
rod

caps
over
crankshaft
and

insert

COnnectIng
rod
bolts
Make
certam
that
the

numbers
on
the
rods

and
the
rod

caps
face
in

the
same
direction

18

Tighten
rod
bolts
to
the

proper
torque
speci

ficatIon

as
shown

m

Figure
61

I
J

@v

N

i

19
Check
the

connecting
rod
end

play
With
a

feeler

gauge
as

previously
described

Cylinder
Head
Installation

1

Spread
a
suitable

gasket
seahng
agent
on
the

top
of
the

cylinder
block
and

position
a
new
head

gasket

2

Spread
seahng
agent
on

top
of
the

gasket

CAUTION

PositIon
the

crankshaft
so
that
no

pzston
IS
at

top
dead
center

Before

installing
head

point
the

keys
on
the

camshaft
and

crankshaft

straight
up

Once

the
head
zs

Installed
do
not

rotate
the

camshaft
and

crankshaft

separately
as

damage
to
the

piston

tops
might
result

3
Place
the

cyhnder
gently
onto
the
head

gask
et

NOTE
Three

dIfferent

types
of
bolts

are
used

to
hold
down
the
head

Make

certain
the

proper
ones
are
used

In

the

proper
places

4
Insert
head
bolts

through
holes
ill
head
and

thread
them
mto
the

cyhnder
block

5

Refemng
to

Figure
62

use
a

torque
wrench

and
Datsun
tool
ST49010000
or

equivalent
to

tIghten
the
head
bolts
to

specIficatIon
Tighten

them

gradually
m
three
or
four

stages
wlnle
fol

lOWIng
the

sequence
diagram
Torque
values
are

hsted

m
the

specIfication
table

CHAPTER

NINE

ENGINE
ELECTRICAL
SYSTEM

The
electrIcal

system
has

undergone
slIght

yearly
changes
the
most

SignIficant
being
ill
the

distrIbutor
Some
models
have
a

smgle
contact

pomt
whIle
others
have

a
dual

pomt
system
De

talls

are
covered

m
the
dIstrIbutor
sectlon
The

electrIcal

system
IS
a
12
volt

negatIve
type

OPERATION

Figure
1
shows
the

starter
motor
When
the

Ignltlon
sWItch

IS
turned

to
the

start

pOSItIon

current
flows

through
the

senes
and
shunt
colis

of
the

magnetIc
SWitch
and

magnetizes
It
The

plunger
IS

pulled
mto
the

sWItch

operatlng
the

shIft
lever
to

engage
the
dnve

pmlon
with

the

flywheel
rmg
gear
and
to
close
the

magnetIc

SWitch

CD
Figure
2
shows
the
starter
motor
CIrcUIt
Clos

ing
of
the

statlonary
and
movable
contacts
cause

the
motor
to
crank
the

engme
and
cut
out
the

series
coIl
of
the

magnetic
switch
The

magnetic

pull
of
the
shunt
coll

IS
suffiCIent
to
hold
the

pmIOn
m
mesh
With
the

flywheel
nng
gear
after

meshing
has
occurred
After
the

engme
starts

and
the

Ignition
key
IS
released
to
the
on

POSI

1

CD

12
11
10

1

Stationary
contact
8
ShIlt
le
er

2
Sene
coli
9
Orne

pinion

3

IgmtlOn
SWitch
10

Ring

gear

4
Solenoid
11
Plmon
slee
e

spllng

5

Shunt
COil
12
Armature

6

Plunger
13
Movable
contact

7
Return

spllng
14

Battery

112

Table
1
CHAPTER
NINE

DISTRIBUTOR
SPECIFICATIONS

POint

gap

POint
pressure

Shaft
diameter
lower

part

HOUSing
Inner
diameter

Clearance
between
shaft
and

hOUSing

Ammendment
limit
ot
clearance

Shaft
diameter

upper
part

Cam
Inner
diameter

Clearance
between
shaft
and
cam

Weight
piVOt
dIameter

Weight
hole
dIameter

Clearance
between
piVOt
and
hole
Inches
Millimeters

00177
00217

1
10
143
Ibs

o
4902
0004

0008

o
4902
0
0007

o

00004
00015

00031

03150
0002

0006

03150
0
0006

o

00002
00011

o
1969
00004

00010

01969
0
0007

o

o
0004
0
0018
o
45
0
55

o
50
0
65

kg

1245
010

0020

1245
0
018

o
OlD
O
038

008

8
005

014

8
0
015

o

o
005
0
029

5
010

028

5
0
018

0

001
0046

@
@

r
COllIS
not

pOSSIble
and
It
must
be

replaced
1f

found
defectIve

Inspect
the
connectIons
to
the

coll
to
make
certaIn

they
are
clean
and

tIght

Inspect
the

top
of
the
coIl
for

SIgnS
of
cracks
or

damage
and

replace
1f

necessary
The

Ignluon

COllIS
located
on
the
left
SIde
wall
of
the

engme

compartment
and
is
held
In

place
by
two
screws

and
washers

SPARK
PLUGS

The

followmg
spark
plugs
or
then

equivalent

are

recommended
for
the
L16

engme
ChampIon

No
NlOY
AutolIte
No
AG32A
AC
No

44XL
and
NGK
No
BP
6E

Figure
66
shows

spark
plug
constroctIon

They
should
be
re
RING

CENTER
ELECTRODE

TERMINAL
NUT
IS

r

1
n
f

INSULATOR

moved

penodlcally
and

inspected
for

general

condItIon

cleanmg
or

replacement
anl

regap

pmg

Figure
67

IS
a
senes
of

photos
that
show
the

appearance
of
and

pOSSIble
causes
of

spark
plug

problems
If
the

spark

plugs
are
still
usable

they

should
be
cleaned

thorougWy
with

a
sand
blast

Ing
type
cleaner
The
electrodes
should
then
be

filed

flat
and
the

plug
regapped
The

proper
gap

IS
0
031
to
0035

m
0
8
to
0
9mm
Never
use

a

spark
plug
that
has

a

damaged
or
cracked

msulator
Use
extreme
care
when

remOVIng
and

mstallmg
spark
plugs
to

keep
from

crackIng
the

msulator

Always
bend
the

ground
electrode

when

settmg
the

plug
gap
Never
bend
the
center

electrode