5-4 COOLING SYSTEM
ENGINE COOLANT
At
the time of manufacture, the cooling system
is
filled with a
50
:50 mixture
of
distilled water and ethylene glycol antifreeze.
Th
is
mixture will provide optimum corrosion and heat protec-
tion, and
will protect the cooling system from freezing at above
-31 °C
(-24
°
F)
.
If
the motorcycle
is
to be exposed
to
temperatures below -31°C
(-
2-1
°
F),
the
percentage
of
antifreeze
shou
ld
be
increased
to
55
% or 60%, according to figure
2.
• The characteristics of different antifreeze vary; therefore,
be
SUI"
tu
W;"
tile specified antifreeze.
B Engine
coolant
: Mix antifreeze
designed
for
alumi-
num
radiators
with
distilled
water
only
.
Water/antifreeze
mixture
ratio:
50
:
50
- 40:60
[ A CAUTION]
* Mix a
high
quality
ethylene
glycol
based antifreeze
with
distilled
water
only. Do
not
mix
an
alcohol
based
antifreeze
or
different
brands
of
antifreeze.
* The percentage
of
antifreeze in
the
coolant
should
be between
50
to
60
%. If
the
percentage
of
antifreeze
is
above
or
below
this
range
the
coolant
's
frost
pro-
tection
and
rust-inhibiting
capabilities
will
be re-
duced
. Always keep
the
antifreeze
content
above
50
%
even
if
the
atmospheric
temperature
does
not
go
be-
low
the
freezing
point
.
_ Engine coolant capacity: 1
250
ml
(1
.3
US
qt, 1.1 Imp qt)
An
tifreeze density Freezing point
50
%
-31 °C
(-24
°
F)
55
%
-40
oC
{-40
0
r}
60%
-55
°C (-67"F)
A
WARNING
* Do
not
open
the
radiator
cap
when the
engine
is
hot
,
as you may
be
injured
by
escaping
hot
liquid
or
va-
por
.
* The
engine
must
be
cool
before
servicing
the
cool-
ing
system
.
* Engine
coolant
may be
harmful
if
swallowed
or
if
it
comes
in
contact
with
the
skin
or
eyes. If
engine
cool-
ant
gets
into
the
eyes
or
r.ont"cts
the
skin
, flush the
eyes
or
wash
the
sk
in
thoroughly
, with
plenty
of
wa-
ter.
If
engine
coolant
is
swallowed
,
induce
vomiting
and call a
physician
immediately
.
tOCI
(
FI
150
302
14
0
284
.
'§
130
266
Q.
en
120
:2
248
'0
110
CD
230
100 212
l-
-
-
(kgf/
cm
' . Ib-ft)
-
r-
-
I
5
'"
:;
0.9
~
~
0.5
c...
ill,
o
:J
'"
Cl
a 10
20
30 40 50 60
DenSity
("!o)
Fig. 1 Engine coolant density' boiling point
lOCI
0
·10
20
E
·
30
'0
Q.
·
40
Cl
c:
'N
'"
·50
~
60
·70
tOFI
32
14
·4
·
22
·
40
58
·76
·
9'
"'-
\
\ /
\
II
-
't
:
-
'tL
20 40
60
80
100
Density
("!o)
Fig
. 2 Engine coolant density-freezing point
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