1968 DATSUN 510 check engine

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Page 25 of 252

DATSUN 510 1968  Service Repair Manual 
CHAPTER 
FOUR

ENGINE 
AND 
IGNITION 
TUNE 
UP

For 
best

performance 
and

economy 
care

must 
be 
taken 
in

perfornnng 
tune

ups 
While

accuracy 
is

required 
the 
task 
IS 
not 
d1flicult 
i

Page 26 of 252

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

Page 28 of 252

DATSUN 510 1968  Service Repair Manual 
ENGINE 
AND 
IGNITION 
TUNE 
UP 
23

CD 
ADJUSTING 
SCREWS 
FOR 
THE 
POSITION

OF

RETARDED 
BREAKER 
POINT

r

A 
O 
S

8

6

C

0

18

2 
6 
10 
14

contact

pomt 
assembly 
from 
the 
dIStnbutor

Page 29 of 252

DATSUN 510 1968  Service Repair Manual 
P

r 
OVll

t 
ate

I 
l 
h
l
JlA

ye
I 
o

ctg 
fI

O 
0

I 
d

1e
d 
c

Ji 
uo 
JJ

cb 
c 
s 
rlr 
I

l
4

c 
1 
2

24

CHAPTER 
FOUR

block

and 
should 
be 
used 
as 
the 
reference

point

m

II

Page 30 of 252

DATSUN 510 1968  Service Repair Manual 
ENGINE 
AND 
IGNITION 
TUNE 
UP 
4

25

block 
the 
throttle 
and 
choke 
m 
the 
WIde

open

position

3 
Remove 
all 
four

spark 
plugs

4

Sequentially 
press 
a

compressIOn 
test

gauge

mto 
e

Page 31 of 252

DATSUN 510 1968  Service Repair Manual 
26

CHAPTER

FOUR

2 
Check 
all 
belts 
hoses 
and 
fuellmes

Replace

If

reqUIred 
Check 
the 
tensIon 
of 
the 
belts 
for

the 
au

pump 
and 
the 
alternator

Adjust 
as 
re

qUIred 
Normal 
de

Page 33 of 252

DATSUN 510 1968  Service Repair Manual 
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

Page 44 of 252

DATSUN 510 1968  Service Repair Manual 
ENGINE 
39

Figure 
11 
Remove 
the 
clutch 
return

spnng 
from

Its

holdmg 
bracket 
and 
the 
clutch

operatmg

cylmder 
from 
the 
clutch 
withdrawal 
lever

19 
Disconnect 
the

speedometer 
ca