Yamaha SL338D (1972), EW433C (1972), GP433B (1972), GP338 (1972), SL433B (1972) Service Manual

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'71,
'72,
'73
MODEL· SPE.CIFICATIONS
and
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NOTICE
This
manual has
been
written
by
Yamaha
Motor
Company
for use by
Authorized
'\'a
n·lah2
Dealers
and
their
qualified
mechanics.
In
light of this
purpose
it
has been assumed
tha
t certairr
basic mechanical
precepts
and
procedures
inherent
to
our
product
are already
kno\'Vn
a.~,d
understood
by
the
reader.
Without
such basic
knowledge,
repairs
or
service
to
this model may render
the
mach
ine
ll:-:~\,
·;·e,
and
for
this
reason
we
must
advise
that
all repairs
and/or
service
be
perform
ed
~
)'i
r:\'l
Authorized
Yamaha
dealer
who
is in possession
of
the
requisite basic
product
knowledge.
Other
inforn1ation
is
produced
by
the
U.S.
distributor,
Yamaha
international
Corporation,
and
is necessary
to
provide
total
technical coverage regarding
the
product.
• * * • • • • • • * * * * • * * * * * * * * * * * * * * * * * * * * * * * *
The
Research, Engineering, and Service
Departments
of
Yamaha are continually striving
to
further
improve all models
manufactured
by
the
company.
Modifications are
tt-1er
e·fcre
inevitable
and
changes in specifications
or
procedures will be forwarded
to
all
Authorized
Yamaha
Dealers
and
will,
where
applicable,
appear
in
future
editions
of
this manual .
YAMAHA
SW433C,SL433B, EL4338, EW433C,
GP4338, SL338D, GP338 SERVICE
MANUAL
1st
Edition
JUNE 1972
SERVICE DEPARTMENT
YAMAHA
MOTOR COMPANY
HAMAMATSU,
JAPAN
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FOREWORD
The Service Manual f o
1· tliis
yea1~'s
Yama/1a srzowmobiles is
divided
into
nvo
volumes
for
Single-Cylinder
Models
and
Twin-Cylinder Models. These
two
book
s will
be used as
the
basic service manuals
for
this
year's
models
.
This
manual
contains
service
information
for
standard
and
GP
models
having
twin cylinders
ranging
from 338 c.c. to
433
c.c.
It
also includes specifica-
tions ·
of
19
71
to
19
7 3
models
for
convenience
of
Yamaha service
technicians.
YAMAHA
MOTOR CO., LTD.
SERVICE DEPARTMENT
,
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CONTENTS
CHAPTER
1.
GENERAL
• • • • • • • • • • • • • • • • • • • • • • • • •
1-1
1-2
1-3
1-4
• • • • • • •
• • • • • • • • • • • • • • • •
• • • • • • • • • • •
• • • • • • • • • • • • • • • • • • •
Features
... Specifications Tools
...
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Operation
• • • • • • • • • • • • • • • • • • • • • • • • •
CHAPTER 2. ENGINE
..
• • • • • • • •
• • • • • • • • • • • • • • • • • • • • •
2-1 2-2
2-3 2-4 2-5 2-6 2- 7 2- 8
Engine Removal
...
Starter
and Magneto
Remo
val
• •
Removal
• • • • • • • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • •
of
Primary
Sheaves
Removing the Oil
Pump
• • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • •
.
• • • • • • • • • • • • • • • • • • • • • • • •
Removal
of
Flywheel
Magneto
Removal
of
Fancase
and
Air
Shroud
• • • • • • • • • • • • • • • • • • • • •
Removal
of
Top
End
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Top
End Reassembling
Crankshaft
Assembly
• • • • • • • • • • • • • • • • • •
CHAPTER
3.
POWER
TRAIN
• • • • • • • • • • • • • • • •
3- 1 3- 2
3- 3
3-4 3- 5
3- 6 3- 7
Disc Brakes and Secondary Sheaves
......
.
....
.
• • • • • • • • • • • • •
Quick
Change E
L433B
, SW433C,
GP433B,
EW433C
• • • • • • • • •
C
hain
Case
and
Front
Axle
Removal
• • • • • • • • • • • • • • • • • • • • •
Front
Axle Insta
llation
• • • • •
<I
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Bogie Wheels ...
...
.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Rear
Axle
Removal
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Track
Removal
• • • • • • • • • • • • • • • • • • • • • • •
<I
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
CHAPTER 4. STEERING (SKIS)
AND
CHASSIS
• • • • • • • • • • • • •
4- 1
4- 2
4- 3
4-4
4
-5
Steering Skis
. .
• • • • • • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Chassis and
Shroud
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Seat . . . . . .
<I
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Luggage
Box
. . . ...
• • • • • • • • • • • • • •
CHAPTER
5.
TIGHTENING
BOLTS
AND
NUTS
• • • • • • • • • • • • • • • • • • • • • • •
ELECTRICAL
• • • • • • • • • • • • • • • • • • • • •
CHAPTER
6.
6-1
Ignition
System
Lighting
System
• • • • • • • • • • • • • • • • • • • • • • • • • •
6-2 6-3
Wiring
Circuit
• • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
CHAPTER
7.
7-1
ENGi
.NE
MAINTENANCE
Ignition
Timing
• •
• • • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • •
7-2
7-3
7-4
7-5
Carburetion
and Fuel System
• • • • • • • • • •
Autolube
• • • • • • • • • • • • • • • • • • • •
Top
End
Maintenance .
.......•..........
• . . .
Piston and
Piston
Ring
Maintenance
(GP338,
GP4338)
• • • • • • • •
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
...
1 1
2
23
25
26
26
34
37
38
43
45
47
49
52 52
56
60
63
66
66
68
70 70 70
71 71 71
72
73
73
73
73
75 75 77
89
92
95
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CHAPTER
8.
DRIVE
T-RAIN
AND
CHASSIS
MAINTENANCE
.........................
.
.........
· ·
97
8-1
Primary Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
97
8-2
Secondary Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7
8
-3
or·1ve-Belt . . . . . . . . . . . . . . . . 97
• • • • • • • • • • • •
97
8-4
Primary Sheave and Secondary Sheave Alignment
• • • • • • • • •
• • • • • • • • • •
8-5
Chain and Chain Case
..........................................................
101
8
-6
Brakes .
........
.
......
101
• • • • • • • • • • • • • • • • •
8
-7
Track . . . . . . . . . . . . .
..
102
• • • • • • • • • • • • • • • • • • • • • •
8-8
8-9
Adjusting the Track
.........
'
.................................
.....
..
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. .
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102
Sk
.IS
. • . . . . . . . • . • • . • 102
• • • • • • • • • • • • • • • • • • • • • • •
APPENDIX 1. INSPECTION
AND
MAINTENANCE
• • • • • • •
• • • • • • • •
104
APPENDIX
2.
CONVERSION
TABLE
..................................
...................
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GENERAL
- Features
CHAPTER
1.
GENERAL
1-1
FEATURES
1.
Optimum
Engine
Perfor111ance
Th
e new, exclusive,
five-port cylinder
design
is
being used in this year's model
to
insure
optimum
performan·
ce.
The
five-po
rt
sys
tem inn
ova
ted
by the Yamaha engineers
has
alrea
dy
proven itself in many fields
of
competition.
2. Increased Engine
Reliability
and Economy
As another
fir
st in ·the
industr
y. Yamaha has
intr
oduced its alrea
dy
proven
Autolube
oil
injection
system in Yamaha
sn
ow
mobile engi
nes
. Th e
Aut
olube system
will
insure lo
ng
engine
lif
e and also result in a decrease
in
operational and
mainten ance costs.
3. Smooth and Positive
Clutch
System
Yama
ha snowmo
bil
es
have an
improved aut
omatic centr
ifugal clutch and power train system. The new
clutch
allews the
eng
ine
to
achieve the most
usa
ble r.p .m .s under all operati
ng conditions. The
driv
e ratio
will vary
from
3.5
: 1 - 1 : 1
thus givi
ng
maximum
acce
leration and
climbing ability.
4. Diaphragm Carburetor
Yamaha snowmo biles have
one diaphragm-type carb
uretor. These carburetors
inc
orporate
an internal metering device
whi
ch always meters the
_co
rrect air/fuel mixtur
e to t
he
engine regardless
of
vibration
or
machine position.
5.
Superior Braking
A new design in
the
track, sprocke t, V-belt and calip
er
disc brake has greatly improved the braking efficiency and safety
of
the Yamaha snowmobile.
6.
Tilt-up
Engine Shroud
The
attra
cti
ve
fib
erglass
engine
sh roun
d h
as bee
n designed
to tilt-up
and away from
the
engine. This functional feature
allows for engine maintenance.
7.
Engine Cowl
The engine cowl covers the
rea
r of t
he
engine
to protect the
driv
er
from
the
dirt
and noise
of
engine operation. This
cowl
is also
easi
ly removable.
8.
Superior
Comfort
The su
spe
nsion system of
the
main track rid
es
on individually
mount
ed torsion spring bogie wheels. The adjustable
torsion
sp
rin
gs
of the rear pi
vot
arm
of the trac
k,
in combin
ation
with
the
attra
ct i
ve
and durable seat, assure tireless
comf
ort
eve
n on the longest
trips.
9.
Quick Change
Gea
rs can readi
ly
be
shifted into high
or low
by
simp
ly
operating the quic
k change lever depending
on
the
conditions
of
a
runn 1ng cour
se.
ea
r ratio of high position s
pro
cket
to
low position sproc
ket
is 1.6 : 1 .
- 1 -
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GENER~t
-Specifications
1-2
SPECIFICATIONS
'
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MODEL
Dimensions and Weight:
Length (W/Skis)
Width
Height (W/Wi11dhsield)
Weight (approx.)
Engine:
Type
No.
of
cylinders
, Bore and
stroke
Displaceme
nt
Max. horse
power
1 Carburetor
I
Lubrication
system
Ignition
method
Magneto
output
Spark
plug
Starting System:
Track and Suspension:
·
Track
:
Width Length on
ground
Suspension wheels
' Drive sprocket
1
Wheel sprocket
Transmission:
Type
Drive Reduction
ratio
, Frame:
Type
Cowl:
Type
Engine
Cowl:
Seat:
-
..
.
-
Storage
Box:
-
Fuel
Tank:
Capacity
- -
- - - - -
Oil
Tank:
Capacity
.
Front
Bumper:
Rear
Bumper:
' -
-
--
--
-
-
'73 Models
SL338D
105
.5 in.
(2,680
min)
34.7 in.
(
880
mrn)
40.6
in.
( 1,030 rnm)
363
lbs.
(
165
kg)
Air
cooled
two-stroke,
5-port
induction
Cast iron sleeves, A lu
mi11um
cylinders
2
cy
lind
ers, parallel
2.362 in. x
2.346
in. (60
mm
x 59.6 mr
n)
20.62
cu.in. (338 c.c.)
24
H.P. @5,500 r.p.m.
KEIHIN
CD42-38 x 1
''
Autolube''
oil
injection Flywl1eel magneto 12V
- 70W @3,000 r.p.m.
B-7HS
(N.G.
K)
Mar1ual
recoi I starter
with
add' I emergency
rope starter
Molded rubber, steel reinforced
1 5 in. (
380
mm)
50
in. (1,270
mm)
12
rubber
wheel bearing
mounted Single, polyurethane, 9 teeth Single, polyurethane, 9 teeth
Automatic
centrifugal engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roller
chain enclosed in
oil
bath
25/13
{ 1.923 :
1)
Fabricated steel
Reinforced fiberglass {removable)
Yes
Removable Fiberglass reinforced
in
the
engine
room
5.0 US.gal
(19.0
Q)
2.1.
US.qt
(2.0
Q)
-
Chromed
tubular
steel
-
Chromed
tubular
steel
- ·2 -
GP338
105.5
in.
(2,680
nlm)
34. 7 i
ri.
(
880
rnrn)
39.0
in.
(
990
1nn
1}
358
lbs.
(
162
kg)
Air
cooled
two-stroke,
5-port
indu
ction
Cast iron sleeves,
Aluminum cy
linders
2 c
yl
inder
s,
parallel
2.362 ir1
. x
2.346
in. (60
mm x 59.6
mm)
20
.62 cu.in. (338 c.c.)
32
H.P. @6,000 r.p.m.
KE
I H I N C
038-30
x 2
··
Autolube''
oil
injection
F
lywheel magneto
12V - 70W @3,000 r.p .m.
N.
G.
K B-8EV
Manual recoil starter wi
th
add' I emergency
rop
e starter
Molded rubber, steel r
einforced
1 5 in. (
380
mm)
50
in. (1,270
mm)
12
rubb
er wheels bearing
moun
ted Single, polyurethane, 9 teeth Single, polyurethane,
9 teeth
Automatic
centr ifugal engagement,
infinitely
variable 3.5 : 1 - 1 : 1
Duplex
roller
chain enclosed in oil bath
25/
14 {
1.
786
: 1 }
Fabricated steel
Reinforced fiberglass (removabl
e)
Removable
Fiberglass reinforced in
the engine
room
5.0 US.gal
(19.0Q)
2.1
US.qt
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
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MODEL
Electrical:
Headlight
Tail I
ight
Stoplight
Igni
tion
key switch
Brake:
Type Control
Th
rattle
:
Type
Accessori
es:
Emergency starter rope
Tool kit
SL338D
12V -60/60W
Hi-
Lo
beam
12V - 8W
{rectangular)
12V
- 23W (incorporated in
taillight)
4
position
on
dash
-
Disc brake
.
Handle lever, left-hand operated
Handle lever, right-hand pperated
Yes Y
es
-3-
GENE
R~h
·
Specifications
- -
GP338
.. -
'
12V
- 60/60W
Hi-Lo
beam
'
Ii
12V
- 8W
(rectangular)
'
12V
- 23W
(incorporated
in
taillight)
4
position
on
dash
'
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Disc brake
Handle lever, left-hand operated
-
-
Handle lever, right -hand operated
,_
-
-
Yes Yes
"'
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GENERAi:.
-Specifications
MODEL
Dimensions and Weight :
Length (W/Skis) Width Height
(W/Windshield)
Weight
(approx.)
Engine:
Type
No.
of
cylinders
Bore and
stroke
Displacement
Max. tiorse
power
Carburetor
Lubrication
system
Ignition met
hod
Magneto
output
Spark plug
Starting
System:
Track
and Suspension: Track Width Length
on
ground
Suspension wheels
Drive
sprocket
Wheel
sprocket
T ra nsm
issi
on:
Type
. ' Drive
Reduction
ratio
Frame:
Type
Cowl:
Type
Engine
Cowl: Seat: Storage
Box:
-
Fuel
Tank:
,
Capacity
! .
' Oil
Tank:
Capacity
Front
Bumper:
.
Rear
Bumper:
.
.
'73 Models
SW433C
10
5.5
in.
(2,680
mm)
37 .6 in.
(
955
mm)
41.9ir1.
(1,065mm)
403 lbs.
(
1
83
kg)
Air
coo
led
two-stroke
5-port
ir1ductio11
Cast iron sleeves
, Alu111inum cyli
11d
ers
2
cy
lind
ers, parallel
2.
677
in. x 2.346 in. (68 1
11n1
x 59 .6
min)
26.42
cu.in. (4
33
c.c.)
30 H.P.
@5,500
r.p.rn.
KEIHIN
CD42-38
x 1
''
Autolube'' oil
injecti
on Flywheel magneto 12V -70
W @3,000 r.p.m.
B-7 HS ( N.
G.
K)
ManL1al
recoil s
tarter
with
add
l'
er11ergency
rope starter
Molded rubbe
r,
steel r
einforced
1 5 in. (
380
mm}
50 in. (1,
270
mm)
12
rubb
er wheels bearing
mounted
Singl
e,
polyur
ethan
e,
9 teeth
Sing le,
polyurethane,
9 teeth
Automati
c ce
ntrifugal
engagement,
infinitely
variable 3
.5
: 1 - 1 : 1 Duplex
roller c
hain
enclosed
in
oil
bath
Hi
25/14 (1.
786
: 1)
Lo
25/14 x 1.6
(2.855
: 1 )
Fabricated steel
Reinfor
ced fiberglass (removable) Yes Removable
Fiberglass
reinforced
in
the
engine room
6.0 US.gal
(23.0
Q)
2.1
US.qt
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
-4-
SL433B
1
05.5
in.
(2,680
111n1)
34. 7 in.
(
880 rnr
n)
40
.6 in.
( 1 ,0
30
ITI
111)
365
lbs.
(
1
66
kg)
Air coo led two-stroke 5-port
indL1
ction
Cast
iron
sleeves,
Alun1ir1ur11 cylinder·s
2 cy
lir
1ders, parallel
2.677 ir1. x 2.346
in. (68 1
11111 x 59.6
rn1
n)
26.42
Cll.
in
. (433 C.C. )
30
H.P. @5,500 r.
p.n1
.
KEIHIN
CD42-38 x 1
''AL
1tolube''
oi l injec
tion
F lywl1
ee
l rnagneto
12V - 70W @3,000 r.
p.n1.
B-7
~J
S
( N. G.
K)
Manual recoi I s
tart
er with add'
I emergency
rop
e starter
Molde
d rubber, steel r
einforced
1 5 in. (
380
mm)
50 in. (1,270
mm)
12 rubber wheels bearing rno
unt
ed
S
ingle, pol
yuret
hane, 9 teet h
Singl
e,
pol
yurethan
e, 9 teeth
Automatic
centrifugal engageme
nt,
infin
itely
variable 3.5 : 1 - 1 : 1
Duplex roller chain e11cl
ose
d in
oil
bath
25/
14
(1.786)
Fabricated steel
Rei
nforced fiberglass (removab l
e)
Yes
Removable Fib
erglass reinforced in the engine r
oom
5.0 US.gal (19.0Q)
2.1
US.qt
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
..
I
!
l
I
.
I
I
.
I
.
'
I
I
l
'
I
I
I
'
I
MODEL
Electrical:
Head I ight Tai
llight
Stop
I i
ght
Igniti
on key s
witch
Brake:
T
ype
Contro l
Th
rottle:
Typ
e
Accessori
es
:
Emergency star
te
r rope
Tool k
it
SW433C
12V -60
/60W
Hi-Lo
beam
12V -SW
(rectangular)
12V
- 23W
(inc
orporated
in
taillight)
4
position
on
dash
Disc brake Han
dle le
ver,
left-hand
operated
Handle lever,
right
-hand operated
Y
es
Y
es
-5-
GENERAL
-Specifications
.
-
- -
-;;
SL433B
: I
-
-
.
12V -60/60W
Hi-Lo
beam
I 1
I 1
12V
- SW
(rectangular)
I 1
12V -23W
(incorporated
in
ta i 11
igh
t)
4
position
on
dash
1 l
-
- -
Disc brake
1.
Handle lever,
left-hand
operated
I '
Handle lever, right-hand operated
I
I
I
I
Yes Yes
'
I
I
I
(
I
• I
' • I
.
:i
,'
• I I
. ' i i
I • l
11
i
I I I l
• • • f
' , . }
I l • : I
J I I I
. . I
I
I
)
I
GENERAL
-
Specifications
I
!
I
I
-
MODEL
Dimensions
and
\~eight
:
Length
(W/Skis)
Widtl1
Height
(W/Windshield)
Weigl1t
(approx.)
Engine:
Type
No.
of cylinders
Bore
and
stroke
I 1
Displaceme
nt
Carbur
eto
r
Lubrication
system
Ignition
method
Magneto
output
Spark
plug
Starting
System:
Track
and Suspension:
Track
Width
Length
on
ground
Suspension wheel
Drive
sprocket
,, Wheel
sprocket
Transmission:
Type
Fuel
Tank:
,, Capacity
- -
--
'
- - -
- - -
'73
Models
EL433B
105.5
in.
(2
,680
r11m)
34. 7 in.
(
880
rnm)
40.6
in.
( 1
,035
mr11)
400
lbs. (
181 kg)
Air
coo
led
two-stroke, 5-port
induction,
Cast
iron
sleeves,
Aluminum
cylinders
2 cylinder
s,
parallel
2.677
in.
x 2.346
in.
(68
mm x 59.6
mm)
30
H.P @5,500 r.
p.m.
KEIHIN
CD42-38
x 1
''
Autolube'' oil
injection
Flywheel
magneto
12V -70W
@3,000
r.p.m.
B-7HS
(N.G.
K)
Electric
starter
Manual recoil sta
rter
with
add'I
emergency
rope
starte
r
Molded
rubber
, steel
reinf
orced
15in. ( 380mm)
50
in.
( 1
,270
mm)
12
rubb
er
wheels bearing
mounted
Single,
polyurethane,
9 teeth
Single,
polyurethane, 9 teeth
Automatic
cent
rifugal
engagement
infinitel
y variable
3.5
: 1 - 1 : 1
Duplex roll
er chain
enclosed
in
oil
bath
Hi
25/14
( 1.
857 : 1)
Lo
25/14
x 1
.6 (2.
855
: 1 )
Fabri
cated steel
Reinfor
ced fiberglass
(removable)
Yes
Removable
-
Fiberglass
reinforced
in
the
engine
room
5.0
US.gal
(19.0
Q)
-
EW433C
105
.5in
.
{2,680
mm)
37
.6 in.
(
955
n1n1)
45.9
in.
(1,1
65 rnm)
431 lbs.
(
1
96
kg)
Air
cooled
two-stroke, 5-port
inducti
on,
Cast iron sleeves,
Alu1ninum cylinder
s
2 cylinders, parallel
2.677
in. x
2.346
in.
(68 mrn
x
59.6
mm)
30
H.P @5,500 r.p.m .
KEIHIN
CD42
-38 x 1
''
Autolub
e'' oil
injection
Flywheel
magneto
12V -70W @3,000
r.p.m.
B-
7 HS (
N.
G.
K)
Electric
starter
Manual re
co
il starter with
add'
I emergency rope starter
Molded
rubber, steel
reinfor
ced
18
in. (
457
mm)
50
in. ( 1 ,270
mm)
12
rubb
er
wl1
eels bearing
mounted
Single,
polyurethan
e,
9 teetl1
Single,
polyuretl1ane, 9 teeth
Automati
c cen
trifugal
engageme
nt
infinit
ely
variable
3.5 :
1 - 1 : 1
Duplex
roller
chain enclosed
in
oi l
bath
Hi
25/
14(1.786: 1)
Lo
25/
14 x 1.6 (2.855
: 1 )
Fabricated steel
Reinfor
ced fiberglass
(removable) Yes Removable Fiberglass
reinforced
in
the
engine
room
6.0
US.gal
(23.0
Q)
-6-
GP433B
105.5in
.
(2,680
mm)
34. 7 in.
(
880
mm)
39.0
in.
(
990
mm)
365
lbs.
(
16
6 kg)
Air
cooled two-stroke, 5-po
rt
ind
uction,
Cas
t iron sleeves,
Aluminum cylinde
rs
2 cylinders, parallel
2.677 in. x
2.346
in .
{68
mm x 59.6
mm)
38
H.P @6,
000 r.p.m .
KE I
HI
N C
038
-32 x 2
''Autolube''
oil in
jectio
n
Flywh
eel
magneto
1
2V -70
W @3,000 r.p.m.
N-3G (Champion) Manual recoil star ter
vvi
th
add'
I ernergency rope s
tarter
Molded
rubb
er, s L
ee
I
r
einf
orced
15 in. (
380
rnm)
50in. (1,
270mm)
12
rubb
er· whee
ls bearing
rn
oun
ted
Single, pol
yureLh
ane, 9 teeth
Singl
e, polyL1re
tl1
ane, 9 teeth
Aut
omatic cent
rifugal
engagen1en
t in
f-ini tely variabl e
3.5 :
1 - 1 : 1
Duplex
roll er chain enclosed
in
oil
bath
Hi 23/14 (
1.643
: 1)
Lo
23/14
. x 1
.6
(2.628 : 1 )
Fabricated steel
Reinforced fibergla
ss
(removable)
Removable Fiberglass
reinfor
ced in
the
.
engine
room
5.0
US.gal ( 19
.0
Q)
\
I
GENERAL
-
Specifications
--
-
MODEL
EL4338
EW433C
.
GP433B
Oil Tank:
Capacity
2.1 US.qt
(2.0
Q)
2.1 US.qt
(2.0
.Q)
2.1
US.qt
(2.0
Q)
I
Front
Bumper
:
Chromed
tubular
steel
Chromed
tubular
steel
Chromed
tubular
steel
-
Rear
Bumper
:
Chromed
tubu
lar steel
C
hr
omed
tubular
steel
Chromed
tubular
steel
Electrical:
j
Headlight
1
2V -60/60W
Hi-Lo beam 1
2V -60/60W
Hi-Lo beam
12V -60/60W
Hi-Lo
beam
Tail lig
ht
12V -SW
(rectangular)
12V - SW
{rectangular)
12V
- SW
(rectangular)
Stop
I ight
12V
- 23W
1
2V
- 23W
12V -23W
(inc
orpo
rated in tai ll ight)
(incorporated in
taillight)
(incorporated
in
tailllight)
Ignit
ion key s
wit
ch
4 positi
on
on dash
4 po
sition on
dash
4
position
on dash
Brake :
Type
Disc brake
Disc brake
Di
sc
brake
Control
Handle lever, l
eft-
hand
Handle lever, left-hand
Handle lever, left-hand
ope
rated
operated
operated
I
Throttle:
Type
Handle lever, right-hand
Handle lever, right-hand
Handle lever, right-hand
operat ed
operated
operated
A
cce
ssorie
s:
Emergency starter rope
Yes
Yes
Yes
Tool
kit
Y
es
Yes
Yes
,
-7-
I
••
I
I
I
'I
.
I
: 1 •
..
I.
. "
. 1
''
1,
'
• I
.
:,
!
I •
I
fl
I,
< I
• ' I t I
.,,
'•~
t ' t I
. !
I:
ii
. . .
' ' . • 1
••
!.
..
1 • i
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••
'
• I • '
. .
'
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: '
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1
.
..
.
l
.
I
I
,
I
GENERAL
-Specifications
--
·-
, I
M<:>DEL
Dimensions
and
Weight:
Length
{W/Skis)
'1
Width
11
Height
{W/Windshield)
Weight
(approx.)
Engine:
Type
I
No. of
cylinders
Bore
and
stroke
Displacement
I•
Max.
horse
power
I
Carburetor
Lubrication
system
Ignition
method
Magneto
output
Spark
plug
Starting
System
:
Track
and Suspension: Track Width
Length
on
ground
Suspension
wheels
Drive
sprocket
Wheel
sprocket
Transmission:
Type
.
Drive Reduction
ratio
Frame:
, ,
Type
Cowl:
Type
Engine
Cowl
: Seat: Storage
Box:
Fuel
Tank:
Capacity
Oil
Tank:
capacity
Front
Bumper:
1; Rear
Bumper:
·h
- -
- -
--
'71 Models
99
-1
/2
in.
32
in
.
38
in.
348
lbs .
SL3388
(2,526
mm)
(
815
mm)
(
965
mm)
( 158 kg)
Air
cooled
two-stroke 5-port inducti
on
Cast
iron
sleeve
s,
Aluminum cylinder
s
2
cylinders,
parallel
2.34 x 2.35
in.
{60 x 59.6
mm) each
20.6
cu.in.
(338
c.c.)
24
BHP
@5,500
r.p.m
.
One
(diaphragm-typ
e),
KEIHIN
''
Autolube''
oil
injection
Flywheel
magneto
12V -40W
@3,000
r.p
.m.
B-7Hz
{N.G. K)
Manual recoil s
tarter with
add'I emergency
rope
starter
Molded
rubber,
steel rei
nf creed 15in. ( 380mm) 50
in.
{1,270
mm)
12
rubber
wheels be
aring mounted
Single,
polyurethane, 9 teeth
Single,
polyurethan
e, 9
teeth
Automatic centrifugal
engagement,
infinitely
variable 3.5
: 1 - 1 : 1
Duplex
roller
chain enclosed
in
oil
bath
25/13
( 1
.923
: 1 )
Fabricated
steel
Reinforced
fiberglass (removable)
Yes
Removable
Fabricated
steel, located
behind
backrest
4.0
Gal.
(15.02)
2.1 Ot.
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
-8-
99-1/2
in.
36-1
/2
in.
40
-3/
4 in.
379 lb
s.
SW396
{2,526
mm}
{ 9
25
mm)
{1,0
35
mm)
{ 1
72
kg)
Air
coo
led two-stroke
5-port
inductio
n
Cas
t iron slee
ves,
A luminL1m c
ylinders
2 cylinders, paral l
el
2.56 x 2.
35
in. (65 x 59.6
mm)
each
24.1
CU. in. {396
C.C.}
27 BHP @5,
500
r.p
.m.
O
ne
{dia
phr
agm-t
ype
),
MI
KUN
I
'' Auto
lub
e''
oi l
injection Flywheel magnet o 1
2V
- 4
0W
@3,000 r.p.m.
B-
7H
z (N.
G.K)
Manu
al rec
oi I starter w
ith add'
I emergency
rope starter
Mo
lded rubber, steel reinforced
18 in. ( 457
mm)
50 in.
(1,270
mm)
12 rubber wheels bearing
mounted
Si
ngl
e, poly
urethane, 9 teeth
Si
ngl
e, polyureth
ane, 9 teeth
A
ut
omatic
centrifugal
engagement,
infinit
ely variable
3.5
: 1 - 1 : 1
Dupl
ex roll er chain enclosed in
oil
bath
25/13 { 1
.923
: 1 )
Fabric
at
ed steel
Reinforced fibergla
ss
(removable) Yes Removable Fabricated steel, located behi
nd backres
t
5.0
Gal.
(19.
0Q)
2.1
Ot.
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
..
GENERAL·
Specifications
- .
-
MODEL SL3388
.
SW396
..
-~
~
-
-
Electrical:
Head I
ight
1
2V -35/35W
Hi-L
o beam
12V -35/35W
Hi-Lo
beam
Taillight
1
2V
- 5W (rectangular}
12V
- 5W
(rectangular)
I
.
Stop
I i
ght
1
2V-
10W (incorporated
in
tai
llight)
12V - lOW
(i
ncorporated
in
ta i 11
ight)
Ignition
key swit
ch
4
position
on dash
4
position
on
dash
-
--
Brake:
Type
Disc brake
Di
sc
brake
Co
ntrol
Handle leve
r,
left-hand operated
Handle
lever,
left-hand
opera
ted
-
I 1
Throttle
:
Type
Handle lever, right-hand operated
Handle lever,
right-hand
operated
-
A
ccess
ories:
Emergency
starter
rope
Yes
Yes
Tool
kit
Yes
Yes
Seat spring
uppe
r
No
Yes
Spa
rk
plug
Yes (B7H
z)
Yes
(87Hz)
-
-9-
l
1 .
I
'
I
' I
I
'
J . • i
I•
r !
1 j I I
: 1
1
·1
I:
1
1
I
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. I •. .
I i p
;.
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. i
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I
j ' I • l
1
i·*
1
I
.I
,1
.
I f - :
; I .
II
I
1
!l
.•
...
I'
. . '
I .
••
! l I I
! I' ' ,
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I
't
t • •
' . .
• ; : 1
I t • • •
(
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• •
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..
,
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·I
'
. j
GENER~l!.
-Specifications
11
"
MODEL
Dimensions and
Weight:
Length
(W/Skis)
Width
Height Weight
(W/Windshield) (approx.)
Engine:
,,
Type
I
I
No.
of
cylinders
Bore
and
stroke
1
Displacement
I .
Max.
horse
power
Carburetor
Lubrication
system
,.
Ignition
method
" Magneto
output
Spark
plug
Starting
System:
I
Track
and Suspension:
Track
Width
Length
on
ground
I• Suspension wheels
Drive
sprocket
Wheel
sprocket
Transmission:
I 1
Type
I'
Drive
I
Reduction
ratio
Frame:
Type
Cowl:
Type
Seat:
Luggage
Box
:
-
Fuel
Tank:
I
Capacity
Oil
Tank:
Capacity:
Front
Bumper:
Rear
Bumper:
- - -
Electrical:
u
Headlight
[I
Taillight
-
: ' '
Stoplight
Ignition
key
switch
--
-
-
'71 Models
99-1
/2
in.
36-1
/2
in.
40-3/4
in.
379
lbs.
SW433E
(2,526
mm)
{
925
mm)
(1,035
mm)
(
172
kg)
Air
cooled
two-stroke, 5-port
induction,
Cast
iron
sleeves,
Aluminum cylinders
2
cylinders,
parallel
2.68 x 2.35
in.
(68 x 59.6
mm)
each
26.4
cu.in.
(433
c.c.)
30
BHP @5,500
r.p.m.
One
(diaphragm-type),
MI
KUN
I
''
Autolube''
oil
injection
Flywheel magneto
12V -40W
@3,000
r.p
.m.
B-7
Hz
(N.G. K)
Electric
starter
Manual recoil
starter
with
add'I eme rgen
cy
rope starter
Molded
rubber,
steel rei
nforced
.
18
in. ( 457
mm)
50
in.
{1,270
mm)
12
rubber
wheels bearing
mount
ed
Single,
polyurethane, 9 teeth
Single,
polyurethane,
9 teeth
Automatic
centrifugal
engagement,
infinitely
variable 3.5 : 1 - 1 : 1
Duplex
roller
chain enclosed
in
oil
bath
25/13
( 1
.923
: 1 )
Fabricated
steel
Reinforced
fiberglass (removable) Removable Fabricated steel,
located
behind
backrest
2.1
Ot.
(2.0 2)
-
Chromed
tubular
steel
Chromed
tubular
steel
12V -35/35W
Hi-Lo
beam
12V -5W
(rectangular)
12V -10W
(incorporated
in
taillight)
4
position
on
dash
·- -
- - -
- -
-
-10-
GP396
99
in.
32
in.
38
in
.
353
lbs.
(2,515
mm)
(
815
mm)
(
965
mm)
(
160
kg)
Air
cool
ed
two-str
oke
, 5-po
rt induction,
Aluminum cylinder
s
2
cylinder
s,
parallel
2
.56 x 2.35 in. (65 x 59.6
mm) each
24.2
cu.in. (3
96
c.c.)
28
BHP @5,500 r.p.m .
Two
(diap
hragm-typ
e), KE
IHI
N
''
Aut
olube'' oil
inje
ctio
n Flywheel magneto 12
V -
40W
@3,000 r.p.m.
B-7 Hz
( N. G.
K)
Manual recoi I
start
er
with
add'I emergency
rope starter
Molded rubber
, steel r
einforced
15 in. ( 380
mm)
50
in.
(1,
270
mm)
12 rubber wheels bearing
mount
ed
Single,
polyurethan
e,
9 teeth
Single, pol
yurethane, 9 teeth
Automati
c cen
trifug
al
engagement,
infinitely variable
3.5
: 1 - 1 : 1
Duplex
roll
er chain enclosed in oil bath
25/13
(1.923 : 1)
Fabricated
steel
Reinforced fiberglass (removable) Removable Front
part
of
the
seat
4.0
Gal. (
15.0
Q)
2.1
Ot.
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
12V -35/35W
Hi-Lo
beam
12V -5W 12V -10W
(rectangular) (incorporated
in
taill
igh
t}
4
position
on
dash
GENERAL·
Specifications
- - - -
-
-
-
--
-
,_
-
MODEL
SW433E
GP396
-
i
Electric starter:
I
Maximum
output
0.51
kW
Maximum
torque
0.54 kg-m
at
6.2V
Brake:
'
Type
Disc brake Disc brake
Control
Handle lever, left-hand operated
Handle lever,
left-hand
operated
Throttle:
Type
Handle lever, left-hand operated
Handle lever, right-hand operated
.
Accessory:
Emergency starter rope
Yes
Yes
,,
Tool
kit
·
Yes
Yes
Spark plug
B-7Hz (2)
Yes (B-7Hz) (2)
Seat spri
ng
upper
Yes (2)
- - - -
-
I
-11
-
..
' I
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I
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GENERAL
-
Specifications
MODEL
'
Di
mens
ions
and Weight:
'
Length (W/Skis)
•1'
Width
I
Height
(W/Windshield)
I l
Weight (approx.)
'
Engine:
Type
, No.
of
cylinders
Bore and
stroke Displacement Max.
horse
power
Carburetor
Lubrication
system
Ignition
method
Magneto
output
.
Ignition
timing
Spark plug
Starting System:
Track and Suspens
io
n:
Track
Width
Length
on
ground
Suspension wheels
Drive
sprocket
Wheel
sprocket
, Transmission:
,,
Type
, ,
'; Drive
"
Reduction
ratio
Frame:
Type
Cowl:
Type
Seat:
Luggage
Box
:
. Fuel
Tank:
'71
Models
SS433
99
in.
(2,515
mr;n)
32
in.
(
815mm)
38
in.
(
965
mm)
353
lbs.
(
160
kg)
Air
cooled
two-stroke,
5-port
induction,
Aluminum
cylinders
2 cylinders, parallel
2.68
in. x
2.35
in. (68 x 59.6
mm)
each
26.4
cu.in.
(433
c.c. )
40
BHP @6,500 r.p.m.
Two
(diaphragm-type),
KEIHIN
''
Autolube''
oil
injection Flywheel magneto 12V -40W
@3,000 r.
p.m
.
R
....
1.7
mm±0.1
mm
B.T
.D.C.
L
....
1.9
mm±
0.1
mm
B.T.D.
C.
N-2G (Champion) Manual recoil starter
with
add'I emergency
rope starter
Molded rubber,
steel
reinfor
ced
15
in. (
380
mm)
50
in. (1,270
mm)
12 rubber wheels bearing
mounted
Single,
polyurethane,
9 teeth
Single,
polyurethane,
9 teeth
Automatic
centrifugal engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roller
chain enclosed in
oil
bath
25/13
(1.923 : 1)
Fabricated steel
Reinforced fiberglass (removable) Removable Front
part
of
the
seat
4.0
Gal. (
15.0
Q)
SR433
99
in. (2,515
mm)
32
in.
(
815
mm)
38
in.
(
965
mm)
275
lbs.
(
125 kg}
Natural
Air
cooled two-stroke,
5-port
induction
Chrome plated,
Aluminum
cylinders
2 cylinders, para
I le!
2. 68 x 2. 3 5 in. ( 68
x 59. 6 mm}
26.4
cu .in. (433 c.c.)
45
BHP @6,500 r.p .m.
Twin
{diaphragm-type), MI
KUN
I
''
Autolube''
oil inj ection
Flywheel
ma
gneto
12V -40W
@3,000 r.p.m.
R ....
1.7
mm±
0.1
mm
B.T.D.C.
L .
... 1 .9
mm + 0.1
mm
8.
T.
D.
C.
N
-2
G {Champion)
Manual recoil starter
with
add'I emergency
rope starter
Molded rubber, steel r
einforced
15 in. {
380
mm) 50 in. (1,270 mm) 12 rubber
wheels bearing mounted
Single,
polyurethan
e,
9 teelh
Singl
e,
polyureth
ane, 9 teeth
Automatic
centrifugal
eng
agement, infinitely variable 3.5 : 1 - 1 : 1 Duplex roller chain encl
osed
in oil bath
31/18 (1.722 : 1 )
Fabricat
ed
aluminum
Reinfor
ced fiberglass (removable)
Removable
-
4.0Gal.
(15.0Q)
Capacity
·
1------~~~~~~-------~~~----------------------------------------------------------;-------------------------------------------------------,
Oil
Tank:
'
1
:
Capacity
2.1
Ot. (2.0
Q)
2.1
Ot. (2.0
Q)
Front
Bumper:
Chromed
tubular
steel
Chromed
tubular
steel
Chromed
tubular
steel
Chromed
tubular
steel
::
12V -35/35W
Hi-Lo
beam
12V -35/35W
Hi-Lo
beam
''
12V -5W
(rectangular)
12V -5W
(rectangular)
4
position
on
dash
4
position
on
dash
--
- -
-12-
GENERAL
-Specifications
MODEL
SS433
SR433
Brake:
Type
Di
sc
brake Di
sc
brake
Control
Handle lever, left-hand opera
ted
Handle lever,
left-hand
operated
'
/
- -
Throttle
:
Type
Handl e lever,
right
-hand operated
Handle lever, right-hand operated
-
Accessory:
Emergency starter rope
Yes
Yes
Tool kit
Yes
Yes
Spark plug
No.
N2G (2)
-
-13-
I
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GENER~L
-Specifications
ll
- .
-
MODEL
Di
mens ions and Weight:
Length
(W/Skis)
Width
Height Weight
(W/Windshield) (approx.)
Engine:
Type
No.
of
cylinders
Bore and
stroke Displacement Max.
horse
power
Carburetor
Lubrication
system
Ignition
method
Magneto
output
Spark
plug
Starting
System:
Track
and Suspension:
, ,
Track Width
Length
on
ground Suspension wheels Drive
sprocket
Wheel
sprocket
,. Transmission:
Type
Drive Reduction
ratio
Frame:
Type
Cowl:
1:
Type:
Engine
Cowl: Seat: Storage
Box:
Fuel
Tank:
Capacity
Oil
Tank:
Capacity
!!
Front
Bumper:
,. Rear Bumper:
1
;
Electrical:
I• Headlight
1:
Taillight
,,
Stop I ight
-
11
Ignition
key
switch
- -
- -
-
103-3/8
in.
33-1 /2 in. 38 in.
348
lb
s.
'72
Models
SL338C
(2,625
mm)
(
850
rnm)
(
965
mm)
(
158
kg)
Forced
air
cooled
two-stroke,
5-port
induction,
Aluminum cylinder
s
2
cylinders,
para I lel
2.36 x 2.35
in.
(60 x 59
.6
mm)
each
20.6
cu. in. (338 c.c .)
24
BHP @5,
500 r.p.m
. One (diaphragm-type) ''
Autolube'' oil
injection
Flywheel
magneto
12V -40W
@3,000 r.p.m.
B-7HS (N.G. K.)
Manual
with
recoil starter
Molded
rubber,
steel re
inforced
1 5 in. (
380
mm)
50
in.
(1,270
mm)
12
rubb
er wheels bearing
mounted
Single
polyurethane,
9 teeth
Single
polyur
ethane, 9 teetl1
Automatic
centrifugal engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roll
er chain enclosed in
oil
bath
25/13 (1.923:
1)
i
--·
Fabricated steel
Reinforced
fiberglass (removable)
Yes
Removable Fiberglass
reinforced
in
the
engine
room
4.0
Gal.
(15.0
Q)
2.1
Ot.
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
Hi-Lo
beam
12V-35/35W 12V -5W 12V -10W
(rectangular) (incorporated
in
taillight)
4
position
on
dash
-
-
. - - -
-
-
-14-
10
3~3/8
in.
33-1 /2 in .
38 in.
359 lbs.
SL433
(2
,625
rn
m)
{
850 111m)
{
965
mm)
( 163
kg}
For
ced air
cooled two-stroke, 5-port
induc
ti
on, Al
umin
um cylinders
2 cylinders,
pa
ra I lei
2.68 x 2.35 in. (68 x 59.6 mrn}
eac
h
26.4 cu.in. (433 c.c.) 30 BHP
@5,500 r.p.m.
One
{d
iaphragm-l ype}
'
'Auto
lube'' oil injection
Flywheel ma
gn
elo
12V
- 40W @3,000 r.p.m.
B
-7
HS
(N.
G.
K.}
Manual
with
recoil starter
Molded r
ubb
er, steel reinforc
ed
1 5 in. ( 38 0 mm }
50in.
(1,270mr
11) 12 rubber wheels bearing moun tcd Single po
ly
ureth
ane
, 9 t
eeL
l1
Single
polyureth
ane, 9 teeth
Automatic ce
ntrifugal engagement,
inf
initely
variable 3.5 : 1 - 1 : 1
Duplex roll er cal1in enclosed in oil bath
25
/ 1 4 ( 1 .
786
: 1 )
Fabricated steel
Reinforc
ed
fib
ergla
ss
(removable}
Yes
Removable Fiberglass re
infor
ced
in the engine r
oom
4.0 Gal. (15.0
Q)
2.1
Ot. (2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
12V -35/35W
Hi-Lo
beam
12V
- 5W (rectangular )
12V
- 1
OW
(incorporated in
taillight)
4
position
on dash
GENERAL
-Specifications
-
-
---
-
MODEL
SL338C
SL433
,,
I
Brake:
'
Type
Disc brake
Disc brake
Control
Handle lever,
left-hand
operated Handle lever,
left-hand
operated
- -
Throttle:
Type
Handle lever, right-hand operated
Handle lever,
right-hand
operated
- I
Accessories:
Emergency
starter
rope
Yes
Yes
Sef'1ice
tool
Yes
Yes
I \
-
- -
Optional
Accessories:
Electric starter
Electric
starter
Speedometer
Speedometer
11
Tachometer
Tachometer
I.
High
windshield
High
windshield
- - -
--
-15-
\ l
I
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'
GENERAL
-
Specifications
'
'
I
11
'
I
''
''
I '
MODEL
Dimensions
and
Weight
:
Length
(W/Skis)
Width
Height
(W/Windshield)
Weight
(approx
.)
Engine:
Type
No.
of
cylinders
Bore and
stroke Displacement Max.
horse
power
Carburetor
Lubrication
system
Ignition
method
Magneto
output
Spark
plug
Ignition
ti
ming
Starting
System:
Track
and Suspension: Track Width
Length
on
ground
Suspension wheels
Drive
sprocket
Wheel
sprocket
Transmission:
Type
Ii
Drive
11
I
I '
Reduction
ratio
Rear
Bumper:
Electrical:
Headlight Taillight Stoplight
Ignition
key
switch
- ·-
-
I :
'
103-3/8
in.
37-5/8
in.
40-3/4
in.
384
lbs.
'72
Models
SW433B
(2,625
mm)
(
955
mm)
(1,035
rnm)
(
174
kg)
Forced
air
cooled two-str
oke, 5-port
induction,
Aluminum
cylinders
2
cylinders,
parallel
2.68 x 2.35
in. (
68
x 59
.6
mm) each
26.4
cu.in. (433
c.c.)
30
BHP @5,500
r.p.m.
One
(diaphragm-typ
e)
''
Autolube''
oil
injection
Flywheel
magneto
12V -75W
@3,000
r.p
.rn.
B7HS
(N.
G.K)
B-
7HS
(N.G.K)
0.071
in.
(1.8
mm)
B.T.
D.C
.
Manual
with
reco
il
starter
Molded
rubber,
steel
reinforced
18
in. ( 457
mm)
50
in.
(1,270
mm)
12
rubber
wheels bearing
mounted
Single
polyurethane, 9 teeth
Single
polyurethane, 9 teeth
Automatic
centrifugal
engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roller
chain
enclosed
in
oil
bath
Hi
25/14
(1.786:
1)
Lo
25/14 x 1.6
(2.875: 1)
Fabrica
ted
steel
Reinforced
fiberglass (removable)
Yes
Removable
Fiberglass
reinforced
in
the
engine
room
5.0
Gal.
(19.0
Q)
2.1 Gt.
(2.0
Q)
Chromed
tubular
steel
-
Chromed
tubular
steel
12V-60/60W
Hi-Lo
beam
12V-
5W
(rectangular)
12V -10W
(incorporated
in
tail I ight)
4 posi
iton
on
dash
--
- .
--
-
·-
-
- - - ·--~ -
-16-
·-
-
'
Ii
10
3-3/8
in.
37-5/8
in.
40
-3/4 in
.
384 lbs.
EW433B
(2,625
mm)
( 9
55mm
)
(1,035
mm)
(
174kg
)
Forced air cooled
two-stroke,
5-port
inducti
on,
Aluminum
cylin
der
s
2 c
ylinder
s,
parallel
2.68
x
2.35 in. (68 x 59.6
mm)
each
26
.4 cu.in. (433 c.c.)
30
HP @5,500 r.p.m.
One
{d
iaphrag
m-type)
''Autolube''
oil inj
ection
Flywheel
magneto
12V -
75W
@3,000 r.p.m.
B-7 HS (
N.
G.
K )
0.071 in. {1.8
mm)
B.T.O.C .
El
ectric
starter
with
manual recoil starter
Molded rubber, steel re
inforce
d
18 in. ( 457
mm)
50 in. { 1 ,270
mm)
12 rubber wheels
bea
ring
mount
ed
Single poly
ur
ethane, 9 teeth
Single
polyure
thane, 9 leet
t-1
Automatic
centrifugal
engagement,
infinitely
variabl e
3.5
: 1 - 1 : 1
Dupl
ex
roller chai
n encl
osed in
oil bath
Hi
25/14 {1.
786
: 1)
Lo
25/14
x 1.6 {2.875 : 1 )
Fabricated steel
Reinforced fibergla
ss
(rernovable) Yes Removable Fiberglass reinforced
in
the
engine room
5.0 Gal .
(19.
0Q)
2.1
Ot.
(2.0
Q)
Chromed
tubular
steel
Chromed
tubular
steel
12V -60/60W
Hi-
Lo
beam
12V-
5W
(rectangular)
,,.
12V -10W
(incorporated
in
tail
I ight)
'
4
position
on
dasb
I
I
'
GENER1'11
-Specifications
-
-
-
- -
-
·-
-,
MODEL
SW433B
EW433B
I I
'
I:
-
Brake:
Type
Disc brake
Disc brake
Control
Handle lever, left-hand operated Handle lever,
left-hand
operated
; I
-
-
Th r
att
le:
Type
Handle lever, right-hand operated Handle lever,
right-hand
operated
Electric
Starter:
.
Maximum
output
-
0.51
kW
Maxi
mum
torque
0.54
kg-m
(3.90
ft-lbs)
at
6.2V
I:
-
-
Speedometer :
.
Light
bulb
-
12V -2W
.
-
Tachometer
:
Light
bulb
-
12V-2W
Accessories:
Emergen
cy
starter rope Yes
Yes
i
.
I
Service
tool
Yes
Yes
i
Optional Accessories:
High
windshield
High
windshield
1.
- - -
- -
-17
-
. . . \
. ' .
;,t
'1.
' t
''
. =
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'
,
••
,
GENER~t
-Specifications
[
MODEL
Dimensions
and
Weight:
Length
(W/Skis)
Width
Height .(W/Windshield)
· Weight
(approx.)
Engine:
:
Type
' '
I'
No.
of
cylinder
Bore
and
stroke Displacement Max.
horse
power
Carburetor
Lubrication
system
Ignition
method
I •
Magneto
output
Spark
plug
Starting
system:
Track
and Suspension:
Track
Ii
Width
I I •
Length
on
ground
Suspension wheels
,,
Drive
sprocket
Wheel
sprocket
I ,
I
Transmission;
Type
Drive
'
Reduction
ratio
.
Frame:
Type
Cowl:
Type
Seat:
Fuel
Tank:
11
Capacity
Oil
Tank:
Capacity
Front
Bumper:
·
Electrical:
·
Headlight
Taillight
,.
Stoplight
:;
Ignition
key
switch
. -
I Brake:
Type
:
~
Control
-. -
-
- - -
.....
- -
-
103-3/8
in.
33-1
/2
in.
38
in.
357
lbs.
'72
Models
GP433
(2,625
mm)
(
850
mm)
(
965
mm)
(
162kg)
Air
cooled
two-stroke,
5-port
indu
ctio
n
Cast
iron
sleeves,
Aluminum cylind
ers
2
cylinders,
parallel
1
I I I
2.68 x 2.35 in.
(68 x 59.6
mm} each
26.4
cu.in.
(433
c.c.)
38
H.P. @6,000
r.p.m.
Two
(diaphragm-
typ
e)
''
Autolube''
oil
injection FI ywheel magneto 12V -40W
@3,000 r.p.rn.
N-
2G
{Champion)
Manual recoil
starter
with
add' I emergency
rope
starter
Molded
rubber,
steel
reinfor
ced
1 5
in. { 380
mm)
50
in.
(1,270
mm)
12
rubber
wheel s bearing
moun
ted
Single,
polyurethan
e, 9 teeth
Single,
polyurethane, 9 teeth
Automatic
centrifugal
engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roller
chain enclosed
in
oil
bath
23/13
( 1 .
770
: 1 )
Fabricated steel
Reinforced
fiberglass (removable)
Removable (Racing seat)
4.0
Gal.
(15.0
Q)
2.1
Ot.
(2.0
Q)
Chromed
tubular
steel
12V -35/35W
Hi-Lo
beam
12V -5W
(rectangular)
12V
- 1
OW
with
twin
reflector
4
position
on
dash
--
Disc
brake
Handle
lever,
right-hand
operated
·-
·--
-18-
10
3-3/8
in
.
37-5/8
in.
40-3
/4
in.
416 lbs.
GP643
(2
,625
mn1}
( ·
955mm)
(1 ,035
mm)
(
189
kg}
Air
cooled
two-
stroke, 5-
port induction
Cast iron
sleeves,
AluminLJr
TI cylinders
Tw
in cylinders
3.01 x
2.76
in. (76.5 x 70
mm)
39.2
cu.in. (643 c.c.)
43
H.P. @5,500 r.p.m.
Tw
o (diaphragm-type)
''
Autolub
e''
oi l inj
ection Flywheel magneto 1
2V -40W
@3
,000 r.p.m.
B
-7E
S (N.
G.
K.)
Manual recoil starter
wi
lh add'I err1ergency
rope sta
rt
er
Molded
rL1bber, stee
l rein r orc
ed
18 in. (
457
mm)
50
i n. ( 1 , 2 7 0
rn
m )
12
rubb
er whe els bearing rnou n Led
Si
ngle,
polyurethan
e,
9 teeth
Singl
e, polyu
rethane, 9
t
e e
t~1
Automat
ic cent rifugal engageme
nt,
infinitely
variable
3.5
: 1 - 1 : 1
Duplex
roller
chain enclosed in
oil
bath
21
I 1 4 ( 1 . 500 : 1 )
Fabricated st
eel
Reinf
orced fiberglass (removable)
Removabl e (Racing seat)
5.0Gal.
(19.0Q}
2.1
Gt.
(2.0
Q)
Chromed
tubular
steel
12V -35/35W
Hi-Lo beam
12V
- 5W (rectangular}
12V
- 1
OW
with
twin
reflect
or
4
position
on
dash
Floating
pad disc brake
Handle
lever, left-hand operated
GENERAL
-Specifications
""
. .
I'
MODEL GP433
GP643
Throttle:
T
ype
Handle l
eve
r, le
ft-h
and operat ed Handle lever,
right
-hand operated
Tachometer: Right-hand side
of
the ins
trument
panel
Ri
ght
-hand side
of
the
instrument
panel
Spee
dometer:
Lef
t-
hand side of the ins
trument
panel
Left-hand side
of
the· instrument
panel
Accessor
ies
:
.
Emergency starter rope
Yes
Y
es
Service
too
l
Yes
Yes
Optional equip ment p
art
s
Expansion
muffl
er
{SS
kit)
SR
kit
-19-
\
I
1
'
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..
.
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. .
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.
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.
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GENERAL
-
Specifications
11
I '
••
MODEL
1 Dimensions and Weight :
I '
'
'
I .
Length (W/Skis) Width
Height
(W/Windshield)
Weight {approx.)
1;
1
Engine:
Type
:
Number
of cylind
ers
Bore and
st
rok
e
I '
ll
1 •
I•
I•
I•
I '
, ,
-
'.
, I
11
• I•
I
I '
I
11 11
'
-
Displac eme
nt
Max.
hor
se
power Carburetor Lubri
catio
n system
Ignition
method
Magneto
output
Spark plug
Starting
System:
Track and Suspension:
Track Width Length
on
ground Suspension wheels Drive
sprocket
Wheel s
pro
cke
t
Transmission:
Type
Drive Reduction
Frame:
Type
Cowl
:
Type
Engine
Cowl: Seat: Storage
Box
:
Fuel
Tank
:
Capacity
Oil
Tank:
·
Capacity
Front
Bumper: Rear Bumper: Electrical:
Headlight
Taillight
Stoplight Ignition
key
switch
-
- - -
i I
11
I '
'72 Models
EW643
10
3-3/8
ir1.
(2,625
n1m)
37-5
/8
in.
(
925
mrn)
40-3/4
in.
(1,
035
mm)
485 lbs.
(
220
kg)
Forced
ai
r cooled
two
-stroke, 5-
port
induction, Al
uminum cylinders
2
cylinde
rs,
parall
el
3.01 x 2.76 in. {76.5 x
70
111m) each
39.2
cu.in. (643 c.c.)
41
H.P. @5,500 r.p.m.
One {diaphragm-type),
KEIHIN
''
Auto
lube'' oil injection Flywheel magneto 12V
- 75W @3,000 r.p.m.
.
B-7 ES
( N. G .
K.
)
Electric starter witl1 manual
Molded rubber, steel
reinforced
18 in. (
457
mm)
50 in. {1,270
mm) 12 rubber wheels bearing mounted Si
ngle polyurethane, 9 teeth
Single po
lyurethane, 9
tee
th
H
ydraulic
transmission
with
qui
ck change
Duplex roller cha
in
enclosed
in
oi I bath
Hi
21/
15
(1.400 : 1) Lo 21/15 x 1.6 (2.24 :
1)
Fabricated steel
Reinforced fiberglass (removable)
Yes
Removable Fibergl
ass
reinforced
in
the engine r
oom
5.0 Gal.
(19.
0Q
)
2.1
Ot.
(2
.0
Q)
Chromed
tubul
ar steel
Chromed
tubular
steel
12V -60/60W 12V
- 5W
12V -10W
Hi-Lo bea
m (rectangular) (in
co
rporated in
taillight)
4
position
on
dash
-
-20-
, .
GENERAL
·
Speciffcations
-
-
-- -
MODEL
EW643
Brake:
Type
Disc brake
Control
Handle lever,
left
-hand operated
'
-
Th
rattl
e:
Type
Handle lever, right-hand operated
"
-
, I
Electric
starter:
Starting
method
Button
type
(Left-hand
side
of
the
instrument
panel)
I
-
I
Speedometer:
Light
bulb
12V -3W
Tachometer:
L
ight
bulb
12V -3W
Accessories:
'
Service
tool
Yes
Optional
Accessories:
High
windshield
- - -
-21-
I
. I .
I
I
I
i
!
I
'
'
. .
.
f '
'
I '
1.',1.
'
~· . ~
GENERAi:.
-Specifications
-
MODEL
Dimensions and Weight:
Length {W/Skis)
Width
Height Weight
Engine:
·
Type
Cooling
method
No.
of
cylinder
' Bore and
stroke
,. Displacement
Compression
ratio
Carburetor
Lubrication
system
·
Ignition
method
Max. horse
power
·
Ignition
ti
ming
Spark plug
ldl
ing r.p.m.
Piston clearance
Starting
System:
Drive:
Transmission
Drive
chain
Reduction
ratio
Drive
sprocket
Suspension
Body:
Frame Cowl Fuel
tank
capacity
Oil
tank
capacity
Front
bumper
,;: Rear
bumper Brake System: Throttle
Type:
,, Tachometer:
Speedometer:
S.
T.D.
attachment
parts:
'
- -
- - -
- - - - -
-
-
'72
Models
SR433B
99-3/4
in.
(2,5
35
mm)
33-1
/2
in.
(
850
1Tlll1)
33
in. (
840
rnm)
309 lbs.
(
140
kg)
2-stroke 5-ports, Cast
iron
sleeves,
Aluminum cylind
ers
Free
air
cooled
2
cy
lind
ers
2.68 x 2.35
in. (68 x 59.6
mm)
26.4
cu.in.
(433
c.c.)
7.0
: 1
CD42-38
(twin),
KEIHIN
Yamaha
autolube
oil injecti
on system
Flywh
eel
magneto
55
H.P.
@7
,500 r.p.m.
L,
R 0.
07'' (1.8
mm)
B.T.D.C. Champion N-2G 3,000
r.p.m.
40...., 50µ (0
.040"' 0.050
mm)
Manual
with
recoil starter
V-belt aut
omat
ic cent
rifug
al
engagement,
infinitely
variable
3.5
: 1 - 1 : 1
Triple
roller
chain 30/18 = 1.667 Single
polyurethane
9 teeth
15
in. (380 mm)
in
width
Special reinforced
rubber
track
deep
patte
rn
Bogie
type
torsion spring 12 rubber wheel
Aluminum Fiberglass reinforced plastic
3.2gal.
(12.0Q)
2.1
qt.
(2.0
Q)
Yes
(Aluminum)
Yes
(Aluminum)
Floating
pad disc brake
Handle lever, right-hand operated
Yes
(Right
-hand side
of
the
instrument
panel)
Yes ( Left-hand side
of
the
i nstru men t panel )
Service
tool
Spark plug
(Champion
N-2G) x 2
-22-
SR643
99-3/4
in.
(2,535
mr
11)
37-5/8
in.
(
95
5 r11n1)
33-3/4
in .
(
860 mr
11)
352 lbs
.
(
1
60
kg)
2 stroke
5-port
s, Cast iron sleeves,
Aluminum cylind
ers
Free air cooled
2
cylinder
s
3.01
x 2.76 in. (76.5 x
70
mm)
39.2 cu.in. (64 3 c.c.)
6. 7 : 1
CD50-43
(tw
in), KEI
HIN
Yamaha autolube oil inj
eclio
11 system
F
lywhee
l magneto
70
H.P.
@7
,000 r.p.m.
L,
R
0.10'
' (2.6 mr
11)
B.T.D.C.
Champion N-2G 2,900 r.
p.
m.
40,....,
50µ (0.04
0,....,
0.050
mn1)
Manual
with re
coil s
tart
er
V-be
lt aut
omatic cer1
trif
ugal e
r1gag
cme
nt,
infinitely
'lariable
3.5
: 1 - 1 : 1
Triple
rol ler cl1ain
27/18
= 1.500
Single pol
yur
ethane 9 teetl1 18 1
n.
(45 7 mm}
in
width
Special
reinforced
rubber track deep pat terr'
Bogie
typ
e torsion spring 12 rubbe r wh
eel
Aluminum Fibergl
ass reinfo
rced plastic
4.0
gal
. (15.0
Q)
2.1
qt.
(2.0
Q)
Yes
{Aluminum)
Yes
(Aluminum} Floating pad disc brake Handle lever, right-hand operated Yes
(Right
-hand side
of the
instrument panel)
Yes
(L
eft-
hand side
of
tl1e
instrument
panel)
Service
to
ol
Spark plug (Champion N-2G) x 2
1-3
TOOLS
1. Special Tools
1-b
1-c
1-d
1-a
1-e
4-a
3-b
0
111
1-f
0
3-c
4-b
3-a
0
3-d
3-e
Fig. 1-1
1 .
Cr
ankshaft
assem
bly
disassembling and re
asse
mbling
jigs.
3.
Flywheel/Primary
sheave
pu
Iler
1-a
Crank separator 90890-021
03
3-a
Magneto
puller
body
1-b Crank jig
90890-02300
3-b
Magneto pu Iler
sc
rew
1-c
Press
box
90890-02202
3-c
Magneto
puller
attachment
1-0
Press
pin
90890-02203
3-d Screw
, 8
mm
L :
80
l
-€
Support plates
90890-02204
3-e
Screw, 6
mm
L:
160
1-f Wedge
90890-02205
4.
Ignition
timing
setting
tool
1
-g
Stops (56
mm)
90890-0221
5
4-a
Dial
gauge stand #1
2.
Ring nu t re
mov
al tool
4-b
Dial
gauge stand
#2
2-a Bearing
nut
wrench
90890-01812
5.
Socket
end
wrench
2.
Gauge
5
2
1
3
6
4
W'•
~
@)
-
...
_
0
·'
I
c
'
e
ort
~
7
Fig.
1-2
1. Thickness gauge
4.
Cylinder
gauge
2.
Dial
gauge
5.
Vernier
caliper
3.
Micrometer
6. Torque wrench
-23-
2-a
0
5
8
GENERAL·
Tools
0
90890-01802
90890-01803 90890-01804 90890-01800
908~1816
9089(}.()1037 90890-01039 90890-01813
7.
Point
checlw
8..
Coil'9SW
\
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11
11 : ...
,
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1
1
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· ·
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11
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GENERAL·
Tools
3. General Tools
3
6
8
7
9
10
1. Plug wrench
2. Set
of
open-end wrenches
3.
Set
of
socket wrenches
4.
Soft.faced
hammer
5.
Steel
hammer
6.
Circlip
pliers
(ST
type)
4.
Standard Tool Kit
1.
Pliers
2.
3.
4.
5.
29 x 22
mm
Special
wrench
21 x 19
mm
Open-end wrench
17 x 13
mm
Open-end wrench
12 x 10
mm
Open-end
wrench
6.
8 x 7
mm
Open-end
wrench
I
1
2
14
15
,
2
3
4
5
4
16
11
13
17
Fig. 1-3
7.
Circlip
plier
s
(RT
type)
8.
Needle nose pliers
9. Pliers
10. Philips-heac.t
screwdriver
11. Philips-head
sc
rew
driver
(large)
12. Philips-heac.t
sc
rew
driver
(medium)
5
6
Fig. 1-4
7.
13
x 21
mm
Plug wrench
8. Screwdriver handle
t--1
8
13.
Philips-head screw
dri
ver (small)
14. Slot-head
r:c
rew
driv
er
(medium)
15.
Slot-head
r:c
rew driver (small}
16.
T-typ
e socket
wren
ch
17.
18.
8
9
L-type
socke t
wren
ch
Torque wrench
and s
ocke
ts
10
11
12
9.
Combination
slotted and
philips
type
screwdriver
10.
Philips
type
screwdriver
11.
Point
wrench and feeler gauge
12. Hexagon wrench
-24-
l
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