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I
GENERAL
- Features
CHAPTER
1.
GENERAL
•
1-1
FEATURES
1.
Optimum
Engine
Perfor111ance
Th
e new, exclusive,
five-port
cy
linder
design
is
being
us
ed in this year's model
to
insure
optimum
performan·
ce.
The
five-po
rt
sys
tem inn
ova
ted
by
th
e Yamaha e
ng
ineers
has
alrea
dy
proven itself in many fields
of
competition.
2. Increased Engine
Reliability
and Economy
As ano
th
er
fir
st in ·the
indu
s
tr
y. Yamaha
ha
s
intr
oduced its alrea
dy
proven
Autolube
oil
injection
system in Yamaha
sn
ow
mobile engi
nes
. The
Aut
olube system
will
insure lo
ng
engine
lif
e and also result in a
de
crease
in
operational and
maintenance costs.
3. Smooth and Positive
Clutch
System
Yama
ha
sn
owmo
bil
es
have an
impr
ov
ed
a
ut
oma
ti
c
ce
ntr
ifugal clu
tc
h and power train system. The new
clutch
allews the
eng
ine
to
achieve
th
e most
usa
ble r.p.m.s under all
op
erati
ng
co
nditi
on
s.
Th
e
driv
e ratio
will
va
ry
from
3.5
: 1 - 1 : 1
thus givi
ng
maximum
acce
leration
an
d
clim
bi
ng
a
bili
ty
.
4. Diaphragm Carburetor
Yamaha snowmobiles
ha
ve
one d iap
hr
agm-type
ca
rb
ure
to
r. Th
es
e
ca
rburet
o
rs
inc
orporate
an internal metering device
whi
ch always meters the
_co
rrect
ai
r/
fu
el mi
xt
ur
e to t
he
engine regardless
of
vibration
or
machine position.
5.
Superior Braking
A new design in
the
track, sprocket, V-belt
an
d
ca
lip
er
disc
br
ake
ha
s greatly improved the braking efficiency and safety
of
the Yamaha snowmobile.
6.
Tilt
-
up
Engine Shroud
The
attra
cti
ve
fib
erg
l
ass
engine
sh
ro
un
d h
as
b
ee
n d
es
igned
to
t i
lt
-
up
and away from
the
engine. This functional feature
allows f or engine maintenance.
7.
Engine Cowl
The engine
co
w l covers
th
e
rea
r of t
he
engine
to
pr
o
te
ct the
driv
er
from
the
dirt
and noise
of
engine operation. This
cowl
is
al
so
easi
ly removable.
8.
Superior
Comfort
The su
spe
nsion system of
the
main track rid
es
on indi
vi
dually
mount
ed torsion spring bogie wheels. The adjustable
torsion
sp
rin
gs
of
th
e rear pi
vot
arm
of
th
e trac
k,
in
co
mbin
at ion
with
the
attra
ct i
ve
and durable seat, assure tireless
comf
ort
eve
n on
th
e lo
ng
est
trips.
9.
Quick Change
Gea
rs can re
ad
i
ly
be
shifted i
nt
o high
or
l
ow
by
simp
ly
operating the
qu
ic
k change lever depending
on
the
conditions
of
a
•
runn 1ng cour
se.
\ The g
ea
r ratio of high posi
ti
on s
pro
cket
to
low position sproc
ket
is 1.6 : 1 .
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