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MAINTENANCE
lnspP.r.t
thP.
r1:1diator
hoses for
cracks
o
r del
!!riuration,
and replace
if necessary.
Ch!!ck
t
he
tightness of
all
hose clamps and
fostene rs.
SECONDARY AIR SUPPLY SYSTEM
ff
tne
hoses show
any signs nf
hr:nt
damage, mspacr
rr.c
PAIR
check
vt1i'i.-P.
,n
the F'AJA
, eed valva cover
for
demege.
3-18
This
model
is
equipped with o bu ilt-in
seconda
ry Air
supply
system.
The pulsl! secondary air supply
sys-
tem is located
o
n
thP. r.ylinder head cove
r.
The secondary air supply system
introd
ur.P.s
filtered
air
i
nto
exha ust yases
i
n
th
e exhaust port. The sec-
ondary
ai
r is
rlrAwn
into
t he
exhaust
purl whenever
t here is negative
pressure
pulse in
the
exhaust sys-
tem.
This
charged secondary air promotes b urning
of
thP.
unburned
ex haust
gases
am.I
chani:ies a
con-
siderable
omount
of
hydror.ubons and
carbon
monoxide
into
relatively
harmless
carbon
dioxirle
And
water.
Remove
the
air
cleaner housing
(page
5-60)
.
Check
the
PAIR (pulse secondary air
injection)
hoses
between the PA
IR
control solenoid valvP.
Md
cylinder
head
cover
rur
deterioration, damage
or
loose co n-
nections. Make sure
the
hoses
arn
not cracked.
Cli!!ck
the
air
suction hose between the
ai
r
cleaner
housing and PAIR co
ntrol
solenuitl valve
for
deterio-
ration,
domoge
or
loose connections.
Mak!! sure the hoses
are
not
kinked, pinched or
r.rAcked
.
CYLINDER
HEAD
COVER
EXHAUST
PORT
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