EMISSION
CONTROL
AND
TUNE
UP
EMISSION
CONTROL
SYSTEM
AN
D
ENGINE
TUNE
UP
CONTENTS
BASIC
MECHANICAL
SYSTEM
ET
Checking
and
adjusting
dash
pot
Adjusting
intake
and
exhaust
valve
automatic
transmission
model
only
ET
9
clearances
ET
1
Checking
carburetor
return
spring
ET
9
Checking
and
adjustin9
drive
belt
ET
2
Checking
choke
mechanism
choke
valve
Retightening
cylinder
head
bolts
manifold
and
linkagel
ET
9
nuts
and
carburetor
securing
nuts
ET
2
Checking
anti
dieseling
solenoid
ET
9
Checking
engine
oil
ET
2
Replacing
fuel
filter
ET
10
Replacing
oil
filter
ET
3
Checking
fuel
lines
hoses
pipings
Changing
engine
coolant
L
L
C
ET
3
connections
etc
ET10
Checking
cooling
system
hoses
and
THROTTLE
OPENER
CONTROL
SYSTEM
ET
10
connections
ET
4
Checking
and
adjusting
throttle
opener
ET
13
Checking
vacuum
fittings
hoses
and
TRANSMISSION
CONTROLLED
VACUUM
connections
ET
4
ADVANCE
SYSTEM
ET
17
Checking
engine
compression
ET
4
Checking
electrical
advance
control
system
ET
19
Checking
exhaust
manifold
heat
control
AUTOMATIC
TEMPERATURE
CONTROL
AIR
valve
ET
5
CLEANER
A
T
C
AIR
CLEANER
ET
20
IGNITION
AND
FUEL
SYSTEM
ET
5
Replacing
carburetor
air
cleaner
filter
ET
20
Checking
battery
ET
5
Checking
hot
air
control
valve
ET
20
Checking
and
adjusting
ignition
timing
ET
5
CRANKCASE
EMISSION
CONTROL
Checking
or
replacing
distributor
breaker
SYSTEM
ET
22
point
condenser
and
spark
plugs
ET
6
Checking
or
replacing
PCV
valve
ET
23
Checking
distributor
ignition
wiring
and
Checking
ventilation
hoses
ET
23
ignition
coil
ET
7
EVAPORATIVE
EMISSION
CONTROL
Checking
distributor
cap
and
rotor
ET
7
SYSTEM
ET
23
Adjusting
carburetor
id
Ie
rpm
and
Checking
engine
compartment
hose
mixture
ratio
ET
8
connections
and
fuel
vapor
control
valves
ET
23
Checking
fuel
tank
vacuum
relief
valve
operation
ET
24
BASIC
MECHANICAL
SYSTEM
1
Start
engine
and
run
it
until
it
is
heated
to
operating
temperature
or
at
least
more
than
800C
I760F
of
engine
oil
temperature
then
stop
engine
Adjusting
intake
and
exhaust
valve
clearances
Valve
clearance
adjustment
should
be
made
while
engine
is
stationary
To
adjust
proceed
as
follows
2
Rotate
crankshaft
to
bring
No
1
cylinder
in
top
dead
center
on
its
compression
stroke
3
Remove
valve
rocker
cover
to
gain
access
to
valve
ET
1
