TABLE
OF
CONTENTS
CHAPTER
1-1.
1 -
2.
1-
3.
1-4.
CHAPT
2-1. Removing the engine
2-2.
2-3. Primary sheave
2-4. Flywheel
2-5. Carburetor
2-6.
2-
7.
2-8.
1.
GENERAL
Specifications
Service data
Construction
1-3-1.
1-
3-2
.
1-3-3.
1-3
-4.
1-3-5.
1-3-6.
Tools.
ER 2. E
Manual
2-2-1.
2-2-2.
2-
2-3.
2-2-4.
2-2-5.
2-
3-1.
2-3
-2. Cleaning and inspection .
2-3-3.
2-
4-1.
2
-4-2.
2-4 -3.
2-5-1.
2-
5-2.
2-5-3.
2-
5-4.
2-5-5.
2-5-6.
2-5-7. Main
Oil
pump
2-6-
1.
2-6-2.
2-6-3.
2-6-4.
2-6-5.
Engine
2-7-1
2-
7-2.
2-7-3Engine
. .
..
...
Engine
..
Power
transmission.
Drive
unit
Steering system
Chassis ...
Electrica l system . ............................... ...........................
NGIN
E
starter
. . . ... ............ ..
Removal ........... .
Disassembly . .
Cleaning and
Assembly
Installation
Disassembly ...
Assembly.
magneto
Removal ........... .
Inspection ....... .... ...
Installation
..
Removal ...
Disassembly .... .
Cleaning and
Assembly
Installation
Adjustment.
...
Removal
Disassembly..
Cleaning and
Assembly.
Installation
Disassembly
Cleaning and in
Assembly
mounting.
...................
............................................
jet
replacement
......
...
..
. . . . . . . . . ...
. .
.
inspection.
.............
......
...
... ..... .
....................
inspection
. .......... .......................... .
............
..................
inspection
...
spect
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ion ... ............ .................
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1
3
5
5
12
14
15
15
15
22
27
32
32
33
33
34
35
36
37
38
39
40
41
46
47
47
48
49
50
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51
51
53
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54
54
55
57
58
58
59
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62
63
CHAPTER
3-1. Secondary sheave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5
3-2. Disc brake ..... ... .. ....... ............. ...... .........
3-3
.
3-4.
3-5.
3-6. Drive track
3-7. Chain
3.
POWER
3-1-1. Removal
3-1-2
. Cleaning and insp ect ion .
3-1
-3. Assembly ..... ..............
3-
1-4. Installation........... ........................ .. .....
3-1-5.
33-2-2.
3-2-3.
3-2-4.
Front axl
3-3-1 . Removal
333-3-4.
3-3-5.
Rear axle ........ ..... ........... ... .. .... .... ... ........... ...........
3-4-1.
3-4-2.
3-4-3.
3-4-4.
3
-4-5. In
Bogie wheels ...... .. ..............................................
3-5-1.
3-5-2.
3-5-3.
33-6-2
3-6-3. Installatio
3-6-4.
3-7-1. Removal....
3-7-2.
3-7-3.
33-7-5.
3-7-6.
Adjustments..
2-1
.
Removal ..
Cleaning and inspection .. .....
Inspection ..................
Adjustment
e..
..........
3-2.
Disasse
3-3
.
Cleaning and ins
Assembly
Insta
Removal............
Disasse
Cleaning and in
Assembly.
stallation .... ........
Removal
Cleaning and inspection ...................
Installation ........... ............. .. ............ ..
.........................
Removal ............
6-1.
Cleaning and inspection .. .....
.
Adjustment............................
housing..
Disassembly. . .............
Cleaning and inspection .. .... ..
Assembly
7-4
.
Installation
Chain
TRAIN
..
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mbly
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pection..........
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llation..
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mbly..
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spection...
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n............
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.. .. ..
adjustment
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... 101
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76
77
77
78
78
82
82
83
83
84
85
86
86
87
87
88
89
89
90
91
92
93
93
94
94
94
94
95
95
97
98
98
99
100
CHAPTER
4-1.
4-2.
4.
Steering
4-1-1.
4-1-2
.
4-1-3.
4- 1-4.
Ski .
2-1.
4-
4-2-2
.
4-2-3.
4-2-4.
STEERING
................................
Removal .................... ........................... .
Cleaning and inspection
Installation .. .. .....
Adjustment
Removal
Cleaning and inspection ............................ ........
Installation
Adjustment
(SKI)
..............
..............
........
.................................................
AND
CHASSIS
.... .......
...................................
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.......... ........ .. ..........
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..
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.
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103
.
104
..
105
105
106
107
.
108
108
109
.109
4-3. Chassis and
4-
3-1.
Removal ...... ..........
4-3-2
. Install
4-4. Rider's
44-4-2. I-nstall
seat................................
4-1.
Removal ..
air
shroud ............................
...........
ation
...
..................
..
.. .. . . ..
ation........
........................ .. ............ ... ............... ............ .. ...... . 111
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. 111
110
110
111
CHAPTER
5-1.
Wiring
5-2.
Ignition circuit..
5-
3.
Ignition
Lighting
5-4.
CHAPTER
Hard
Poor
High
Troubles
5.
ELECTRICAL
diagram
timing
circuit..
6.
TROUBLE
starting
low
speed engine
speed
operation
at
both
...... ....
........
adjustment
.... ....
...............
low
SYSTEM
................................
............................
...........
........
......
......
........
............
....
SHOOTING
....... .... .
operation
problems
and
high
.......
......
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speeds
.....
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...........
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113
114
121
124
12
5
..
125
.
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..
125
.
126
SOMMAIRE
CHAPITRE
1-1. Caracteristiques ......................... .
1-2. Donnees d'entretien................. ...... ............
1-3. Construction....... ....................... .................... .............. ........... ...........
1-4.
CHAPITRE 2. MOTEUR
2-
1.
2-
2.
3.
2-
2-4. Magneto
2-5. Carburateur .........
2-6.
7.
Moteur .. ....... ..........................
2-
2-7-1
2-7-
2-7-3. Montage
2-
8.
Montage du moteur .............. ........................... .
I.
GENERALITES
.......
... ......... ...............
..........
1-3-1
. Moteur .......... ............
1-3
-2.
Transmission de
1-3-3. Unite de commande .... ............. ..... .. .......
1-3
-4. Systeme de direction .......... ......... ......... ........ .................. ............... ...... ................ ....... .. ..
1-3-5. Chassis .......................................... ............................... ................................... ............
1-3-6. Systeme electrique ..................... ....... ..... .
Outils ....................... ............... ........ ......... ......... ......... ......................... .............. ............... .... ...
Demontage du moteur........... .......... ....... ............ ...... . .. . . .. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 2 7
Demarreur manuel
2-2-1. Depose ............. ...... ......... ..
2-2-2. Demontage ..... ...... ............................... ........... .. ......................... .... ....... .......... .............. 32
2-2-3. Nettoyage et controle ...... ......... ..
2-2-4. Montage
2
-2-
5.
Installation ............
Poulie primaire .... .
2-3-1. Demontage ........ ............ ....... ..
2-3-2. Nettoyage et controle (Inspection) ... ................
2-3-3. Montage .... ............. ........ ........ ..................... ..................... ......... ........ ........ ................... 38
.............................
........
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.........
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................ ............. .... .......
Ia
puissance ..... ......
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.................... ............ ............ .... .............. .... ............... 36
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.. ..................
... ...........
...... ......... ........ ....... ....................... ......
....
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.......
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.......
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........ ...... ........... ...... 32
a volant ....... ................. .......... ....................... ...... .................................. .. ...
2-4-1. Demontage .
2-4-2. Controle .... ........ · ....... ....
2-4-3. Installation .... ............. ........ .. ........ ........
2-5-
1.
Depose .
2-5-2.
2-5-3.
2-5-4.
2-52-5-6.
2-5-7.
Pompe a huile ............
2-62-6-
2-6-3. Nettoyage et inspection ..... ........ ................ ................ ... ... ..... ...
2-6-4. Montage .............. ......
2-6-5. Installation ............
Demontage ........................ ........ .......
Nettoyage et inspection ......
Montage ............................... .... ................... ........... ............. ..... .................................... 50
5.
Installation
Reglages ......
Rem
placement du gicleur principal ............
1.
Depose .... .. ...
2.
Demontage
. Demontage
2.
Nettoyage et inspection ....
.......
.......... .. ........... ............ .. .... ........ ... .............................. ......................... 40
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.......
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... ........ .......... ......... ...... ........ .
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...
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... 2
. ............ 4
22
31
33
33
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... .. 48
51
... ·····.·· ······ 58
62
63
70
71
12
14
15
15
CHAPITRE 3. TRA
3-
I.
Poulie secondaire ............... ..... ....................... ..........
3-1-1. Depose ...
2.
3-13-1-3.
3
Nettoyage et inspection
Montage ................... ..
-1
-4. Installation ......... ........... ..
3-1-5. Reglages ....
3-
2.
Frein a disque ....................
2-
I.
3-
Depose
IN
D'ENTRAINEMENT
....
.... .... ..... ... ..... ...... .
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.....
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.................... 8 I
................ ...... ... ........ ... ................ ........... ..... ....... ................ ... 82
3-2-2. Nettoyage et inspection ... ...... ............ ............. ........ ................ ..... ....... ...... ........... ........... 82
3-2-3. Installation ..
3-2-4. Reglages ....
3-
3.
Arbre avant ....... ....................... ..... ........... .................. ..................... .... .............. ................... ... 84
3-3-1.
3-3-2.
3-3-3.
3-3-4.
3-3-
Depose ...........
Demontage .........
Nettoyage et inspection ..
Montage .........
Installation ................................. ............... ........ ... .... ........................ ...
5.
3-4. Arbre arriere ............. ..... .....
3-4-1. Depose
3-4-2. Demontage ...........
3-4-3. Nettoyage et inspection ......
3-4-4. Montage ............ .....
3-4-
5.
Installation ......
3-5. Bogies .... .... .. ......
3-5-
1.
Depose ............................... ..................... .... .... ... .. .................... ................. ........ .......... 93
3-5-2. Nettoyage et inspection ...... ...
3-5
-3
. Install ation .. ............................ ..........
3-6. Chenille .....
3-6-1.
3-63-63-6-4.
7.
Boitier de chaine .... .. .......... ..... ... .............. ......
3-
......
Depose ................. ... ........... ........ .
2.
Nettoyage et inspection .............. .......
3.
Installation ............... .
Reglage ... ........ .... ..... ...
3-7-1. Depose .... ......... .... ..... ....... ........................................ ....
3-7-2. Demontage ....
3.
3-73-7-
Nettoyage et inspection ... ......... .. ... ..... .............. ........................ ...................................... 99
4.
Montage ....
3-7-5. Installation ..... ............... ...... ......................... .. ....... ............ ...........................
3-7-6.
Reg!
age de
..................
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......
...................
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......
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...
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... ..... .......... ......... .......... ........... ................. 86
........... ........... ...... .......................
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...........
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.......
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.................................................... ...................... ............. 90
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...
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.....
......
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........
............... ......... .....
Ia
chaine .... .................................................... ..
...
.... ..... .................................................. .. ...... 95
...
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..
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....... ........ . 100
.............................. ...... I
78
78
IOO
01
CHAPITRE 4. DIRECTION (SKI)
4-
I.
D.irection .........
4
-1
-
I.
Depose ....... .................. .......... ..............
4-1-
2.
N cttoyage ct inspection ........... ........................................... ...................................... ......
.......
.... .......... .... ................ ........
4-1-3. Installation ....... ..... .... .....................
4-1-4. Reglage ............. .....
4-
2.
Ski
....
.....
.....
... ...
...
.. .
.........
4-2-
1.
Depose .....
....................
4-2-2. Ncttoyage et inspection ..............
4-2-3. Installation ........ .......... .... .... ...... ..
4-2-4.
Reglage ...
......
......
..............
..... ...........
ET
CHASSIS
......
... ........................ .............. ........
.......
....... ...... .............................. ......... ....... .....
...
..... ............... .... .......................... ....................... ..
..... ....... ...................................
...
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...
................................ ....... ................ 109
.........
.......
......
.......... I 03
................... ........ ............. 1 06
.....
....
.... .. ..
...........
...
....... .. .... ... .. ................. 108
..... ........... I07
.....
................ .
........ ... .................. 109
104
105
105
108
4-3. Chassis et capot ...... ............................... .......... ..
4-3-
1.
Depose ... ..
-3-2.
4
4-4. Siege ... .............. ....... ............. ..... .......... ..... ...................... ........... ......
4-4-1. Depose ..... .........................
4-4-2. Installation ....... .......... ........ .........
Installation .........
........
......... .... ...................... .
...................................................................................................
...................................
......
..........
...............
.... .. ....... ... ........... ........
....
............
...... ........ .. ........ ...
........... ....... ............... ..... ...... . 110
.................... .. ................. ...... .........
........
....
.......... .
................
......
....... .... ...... ......
............... .............. ...
.....
.......
.II
111
111
.II
.Ill
0
I
CHAPITRE
5-l. Scheme de ciiblage .......... ...................
5-
2.
5-
3.
5-
4.
CHAPITRE 6.
5.
SYSTEME ELECTRIQUE
Circuit d'allumage ......... ..... .......... .........................
Reg!
age de l'avance a l'allumage
Circuit d'eclairage ...................... .... ........... .
DEPANNAGE
Demarrage difficile ........................... ............ ....
Fonctionnement du moteur
Problemes de fonctionnement a hautes vitesses
Prob1emes a haute et
faib1e
...........
a faible vitesse defectueux ...... .......
vitesses ............. .. .. ..........
....................................
.................. .
.................
.......
.....
......
...........
............. ..... .......... ...
..........
......
... ..........
........
........... .............. ...... .. .......... .............. 129
......
.... ... ............. ........................ .............. .
.....
.............................
............. ... .. ............................... .
...
......... ....... .... ...
.....................
.........
...
..
.....
.........................
......... ....................
....
.............................. ... 124
..... ............ .... 129
..........................
113
114
121
129
..... 130
GENERAl
GENERALITE
CHAPTER
1-1.
Dimensions
Engine:
Starting
Track and suspension :
Transmission:
Frame:
Cowl
Seat:
Fuel
Front
Electrical:
Brake:
Throttle
Kill switch:
Accessories: Emergency starter rope. Service
Optional
1.
GENERAL
Specifications
MODEL
:
(w/ski
Length
Width
Height
Type
No.
of
Bor
e and stroke
Displac
Max. horsepower
Carbu
Lubrication
Magneto
system: Recoil hand
Track
Width
length
Suspension
Drive
sprocket
Wheel
Type
chain
Drive
Type
:
Type
tank:
Capacity
tank
Oil
bumper:
Headl
ight
Taillight
Stoplight
Ig
nition
Type
Control
:
Type
Type
equipment
s)
(w/windshield)
cylinder
ement
re
tor
system
output
on
ground
wheels
sprocket
capaci
ty
key
switch
parts: Tachometer and
96
33
38
Air-cooled
2
2.362 x 2.346 ins.
20.63
25 HP/
KEIHIN
"Autolub
Flywheel
Molded
15
39
12
Single polyurethane. 9
Single
Aut
Duplex roller chain enclosed in oil bath
Fabricated
Reinforced
Removable
4.5
2.4
Chromed
12V.-60/60W
12V.-8W
12V.-23W
3-
Disc brake
Handle
Handle
Push
.1 ins.
(2.440
mm.)
.3 ins.
(845
mm.)
.6 ins.
(980 mm.)
2-stroke
cu.in.
5.500
CDX42-38
e"
oil
magneto
starter
rubber. steel reinforced
ins.
(380
ins.
(990
rubber wheels. bearing
polyurethane. 9 teeth
oma
tic
centrifug
steel
fiberglass (removable)
US
gals.
qts. (2
25
tubular
position. on
lever.
lever.
button.
5-port
(60
(338
c.c.)
r.p.m.
x 1
injection
12V.-70W
mm.)
mm
)
al engagement.
(17
.0 lits.)
lits.)
steel
High-low
dash
left-hand
right-hand
right-hand
speedometer
operated
59.6
x
mounted
teeth
beam
operated
operated
GS338G
mm.)
. @
3.000
tool
r.p.m.
infinitely
kit
variable
3.5
1
~
1
:
: 1
- 1
--
GENERAL
GENERALITE
CHAPITRE
1-1.
Caracteristiques
Dimensions et poids:
Longueur (sans skis)
Largeur
Hauteur (sans pare-brise)
Moteur:
Type
Nb. de cylindres
Alesage et course
Cy
Puissance maxi
Carburateur
Graissage
Puissance du volant magnetique
Demarreur:
Chenille et suspension:
Chenille
Largeur chenille
Longueur surface portante
Suspension
Pignon d'entrainement I pignon en polyurethane (9 dents)
Pignon AR
-
Transmission:
Type
Entrainement
Chassis:
Type
-
Capot:
Type
Selle:
Reservoir de carburant:
Capacite
1-
-
Reservoir d'huile:
Capacite
Pare-choc A
--
Equipement electrique:
Phare
Feu AR
Feu stop
Contact
Frein:
Type
Commande
Accelerateur:
Commande
Commutateur
Commande
Accessoires:
En option:
I.
GENERALITES
MODELE
2.440mm
845 mm
980mm
Deux-temps, refroidissement
2
60 x 59,6 mm
lindree 338 cm
25
ch. a 5.500
KEIHIN
Systeme d'injection d'huile Autolube
12V-70W
Lanceur manuel
Caoutchouc moule,
380 mm
990 mm
I 2 galets caoutchouc montes sur roulements
I pignon
Embrayage centrifuge automatique et variateur
Chaine
Acier
Plastique
Banquette amovible
I 7 litres
2,25 litres
Tube d'acier chrome
12V -60W
12V-8W
12V-
23W
3 positions (au tableau
Frein
Main gauche, levier au guidon
Main droite, levier
Par
poussoir actionne
Corde de lanceur de secours, trousse d'outillage
Compte-tours et indicateur de vitesse
. -
V:
a cle
d'arret
---
d'urgence:
3
tr/mn
CDX42-38
a 3.000
a reenroulement
en
polyurethane (9 dents)
a rouleaux duplex baignant dans l'huile
usine
arme (amovible)
-
/60W
Feux de route et de croisement
a disque
X I
tr/mn
armature
debord)
au
guidon
par
par
d'acier
--
Ia
main droite
GS338G
air, a 5 lumieres
(3,5/
I
~
1/1)
2-
-
GENERAL
GENERA
LITE
1-2 . Ser
ENGINE
1------------------
Carburetor:
1
------------------t--
Oil
1--
---------------
DRIVE:
Clut
1--
-------------
Chain housing:
vice
der
Cylin
Piston clearance
Lubrication oil
(Recommended
Igniti on
Compression ratio
Idling
speed
plug
Spark
Model
Mai
n j
et
Opt
ional main
Pilot
screw
S
low
jet
Partial
jet
Fuel level
Valve seat
pump:
Minimum
Maximum
ch:
Primary spring
Secondary spring
V-belt
Sheave distance
Sheave
Oil
capacity
Oil
Reduction ratio (Drive ch ain
1-
sprocket/Driven
----------------+-----
Suspension:
Track
deflection
Brake:
Brake pad
Gap
between
BODY:
width
Ski
Data
MODEL
head
timing
(S.T.D.)
(S.T.D.)
(S.T.D.)
(S.T.D.)
stroke
stroke
offset
wear
(S.T
tightening
oil)
jet
chain sprocket)
limit
pad a
nd
disk
D)
torque
---
Nut
s:
16
0.0018 ~ 0.0020
1st:
YAMALU
2nd:
Another
"B
IA
With
dial gauge and
B.T.D.C. 1 5± 0 1 mm.
58:
1
6.
1
,800
±100
1':-J
.G.K. B-
-!
-----------------
KEIHIN
#14
#145 #1
1-1/4
#
60
#
70
0.1
0.07¢
--------
0
.008 ~ 0.009
0.06 ~ 0.0
0
96
+0
_0_
in.
7HS
CDX42-38
35 #130
.079.
(1.8¢
--l------------------
Part No.
Part No.
Part
Outer
10 63±0
02 +0020.
-~------
0.45
SAE 1
12/23
90501-45162
90508-35073
No. 820-17641-00
line length :
07
4
-
.
0.059
qt. oz.
OW/30
- -- -
0.
79 ~ 0.
0.04
in.
(1.0
0.
008 ~ 0.04
26.3
ins.
(670
.6 ~ 1
9.5ft-lbs
in.
BE
2-stro ke oil
brand
certified
r.p.m.
x 1 (8
( + 2 )
ln
. 5 _
196
mm)
-
-------------
in.
7 in.
(1
1.101±i3mm
(270± 2
ins.
6.0
(
ln.
------------
(430
c.c)
motor
oil "MS"
----------
98
in/22 lbs.
mm)
in.
(0
mm.)
GS338G
. (2.3 ~ 2.7
(0045 ~ 0.050
2-stroke
for
point
5
(0
65 ~ 1.87
+ 0 5 )
- 1.5 mm.
2 ~ 1 .0 mm.)
oil labeled
service TC-
checker
-
--------------
8400)
mm
.
20 ~ 0.25
-
-------
(Color code: Black)
(Color code:
(20 ~ 25 mm./
mm.)
mm)
detergent
mm)
W"
mm)
Not
m-kgs.)
--
painted)
----·-
-
---
1 0 kg.)
-
--------
--
---------
--------
----
--
-
-
Note:
The research and engineering
provements
maha Snowmobile
and
modific
Dealers as soon as
departments
ations are therefore inevitable.
of
Yamaha are
it
is available.
continual
Information
- 3 -
ly
str
ivi ng
to
further
regarding changes
perfect the
will
be
forwarded
GS338G
to
Snowmobil
all
Authorized
e. Im-
Ya-
GENERAL
1-
2.
Donnees
GENERALITE
d'entretien
MODELE
GS338G
MOTEUR:
Couple
de serrage de
Ia
culasse
Jeu du piston
Huile de graissage (recommandee)
Ecrous: 2,3 ~ 2,7 m-kg
0,045 ~ 0,050
1.
Huile deux-temps Yamalube
mm
2. Autre marque d'huile repondant aux prescriptions BIA
Calage de l'allumage
Rapport volumetrique
Regime de ralenti
Bougie (S.T.D.)
pour service
Avec Jauge
1,5±0,1
6,58:
1
1.800±100 t/min
N.G
.K. B-7HS
TC-
W
a cadran et controleur de vis platinee
mm
AV. P.M.H.
Carburateur
Modele
Gicleur principal (d'origine)
Gicleurs principaux en option
Vis
de ralenti
Gicleur de ralenti (d'origine)
Gicleur partie) (d'origine)
Niveau d'essence
Siege de pointeau
~------------
Pompe
---------------------+------------------------------------------------------
ahuile
Course minimum
Course maximum
~
------------------------------+-~----~--------------------------------------------
KEIHIN
#140
#145, 135 et 130
1/4
1#60
#70
+2
5_
¢1
0,20 ~ 0,
1,65
CDX42-38 x I (88400)
mm
5
,8 mm
25
mm
~
1,87 mm
-----------
·---·--
TRANSMISSION:
Poulies:
Ressort de poulie primaire
Ressort de poulie secondaire
Courroie trapezoidale
Distance entre poulies:
Decalage des poulies:
~
------------------------------~--------------------------------·---------------------------
Piece No. 90501-45162, Couleur de til: Noir
Piece No. 90508-35073, Couleur de til: Non colore
Piece No. 820 -1 7641 Longueur de circonference ext:
00
1,
108 ± 8 mm
270±2 mm
+0,5
6,0
-),
mm
5
Carter de chaine:
Contenance d'huile
Huile
Taux de reduction
(Pinion
430 cc (0,45 oz.)
Huile moteur detergeante SAE 10W/ 30W
12/23
"MS"
menant/pinion mene de chaine)
Suspension :
Fleche de Ia chenille:
20 ~ 25
mm/10 kg
Frein:
Limite d'usure des plaquettes
de frein
Jeu plaquette-disque
1,0mm
0,2 ~ 1,0 mm
CHASSIS:
Ecartement des skis (d'origine)
670mm
Remarque
:
Les departements de recherche et d'etude
modifications sont done inevitables. Tous
tions ou alterations.
de
Yamaha s'efforcent d'ameliorer sans cesse
Ies
concessionnaires Motoneiges Yamaha seront avises des que possible de toutes modifica-
- 4 -
Ie
motoneige GS338G. Par consequent, des
2.
Operatio
As
crankc
mixture
n
the piston
ase
is dra
buretor. As
seals
off all
til
it
is
above
During
negative
and
drive
vibrate
engine
pressure
carried
chamber.
up
diaphragm
through
then
The
tension
same
But it is
than
to
main
time.
the
the
the
spring
so
downward
The inlet
valve
seat.
ch
amber. the
rises. This rising
downwa
As
the
and
prevents
rising.)
pressure
This
is
is
rd
the
main
inlet control l
thus
the
In
is
chamber
located
turned
in, it
spring.
This
results
before
the
out.
the
diaphragm
fuel
pressure
The
amo
unt
tube
attached
level
height
adjustment
Once th
then
car
metered
justing
chamber
e fuel level
there
buretor
by
screw,
port
turi.
As
this
fuel
vaporized
crankcase
moves
drops below
wn
the
parts
and
atmospher
through
This
and dow
action
outlet.
regulator
diaphragm
through
it is forced
designed
upward,
atmospheric
into
the
piston
moves
compresses
ic
operation,
pulses
the
impulse
causes
n.
sucks
check
chamber.
is forced
the
upward
that the
crankcase
pressure.
alternating
are
caused
the
fuel
The
fuel
out
valve.
downward
inlet control lever.
by
upward
force.
control valve is usually
But
when
fuel flows into
fuel
weight
pressure
against
diaphragm
ever
the
fuel
pressure
this
manner. a constant
maintained
pressure
in
the
bottom
pushes
in
more
fuel valve is
to
shut
of
fuel
to
the
will rise
screw
is
are
two
venturi. The fuel
the
slow
it
is
discharged
and
the
enters
the
and carri
and
pressure
forces
the
force
of
is
forced
to
close
stops
flowing in. (That is, it
inside
the
regulator
.
is
variab
le.
of
the
carburetor.
more
firmly
pressure
shut
spring
off
pressure
outside
and
screwed
has
off.
relaxes. It
the
fuel valv e.
is
fall
with
been
through
registered
of
in
stabilized by
adjustments
(under
adjusting
screw
through
main
discharge
carburetor
ed along
by
the
.
GENERAL
the
pre
ssure
pressure.
from
and
the
downward, the
crankcase
volume un-
positive
in
the
crankcase
port
to
the
fuel
pump
diaphragm
up
and
down pump
from .the fuel tank.
and
inlet control valve,
by
the
the
diaphragm
force
separated
in
the
main
the
diaphragm
downward,
the
inlet control valve,
is
from
the
regulator
the
chamber
diaphragm
it caus
spring.
spring.
chamber
regulator
An
against
If
the
the
the
and
screw
carburetor.
level
out.
adjusting
If
this
the
diaphragm
the
carburetor
is
then
takes
in
a fuel level
tube
chamber
backed
adjustment,
to
control fuel to
constant
venturi,
air
pressure)
or
by
the
the
idle
port
into
it
is
broken
rushing into
main ad-
discharge
the
in
the
the
car
piston
and
pump
to
inl
et
At
the
greater
the
es
also
from
screw
screw
less
Fuel
as
the
the
ven-
up,
the
is
GENERA
2.
Fonctionnement
le
Lorsque
carter descend sous
-
lange est attire
piston se deplace vers
mettent
so
it au-dessus de
Durant
piston se deplace vers
Ia
pression atmospherique,
dans
le
carter du carburateur. Lorsq
le
Ia
compression du volume du carter
Ia
pression atmospherique.
le fonctionnement du moteur, des impulsions de
le
haut,
Ia
pression dans le
bas, les segments de celui-ci per-
jusqu'a
pression negatives et positives alternativement
le carter
d'
sence. Ainsi
le haut et le bas. Cette action de
piration de !'essence
termediaire du clapet de retenue et de
mande d'admission
et
impulsion a
sont acheminees
Ia
chambre de
Ia
membrane de
a partir du reservoir d'essence,
a
Ia
chambre
par
l'intermediaire de !'orifice
commande
Ia
pompe a essence vibre vers
de
Ia
Ia
membrane permet !'as-
Ia
soupape de
de regulation.
La membrane principale est forcee vers le bas
d'adm
ission
par
l'intermediaire du levier de
d'admission.
le
ressort de
Ia
force vers
Au
meme moment
Ia
membrane. Mais
le
haut est plus grande que
il
est force vers
sa
conception est telle que
Ia
force vers
La soupape de commande d'admission est generalement
paree
du siege de
coule
dans
Ia
pression
tion de pression force Ia membrane vers
force du ressort de
principale est forcee vers
d'admission ferme
par
suite !'essence
auss
i,
empeche
Ia
chambre de regulation). De cette
constante
dans
Ia
soupape. Mais lorsque !'essence s'e-
Ia
chambre de regulation,
dans
Ia
chambre
Ia
aug
.membrane. Lorsque
le
Ia
soupape de commande d
ne
penetre plus a l'interieur (c'est a dire
!'au
gmentation de
le
poids de !'essence et
mentent.
bas,
le
levier de commande
Ia
pression a l'interieur de
fa<;:on,
Ia
chambre de regulation est maintenue .
Cet
le
bas contre Ia
Ia
'ad
La pression de cette chambre est variable. U
glage e
st
situee a
Ia
partie inferieure du carburateur.
LITE
et
le me-
ue
ce qu'il
ont
lieu
dans
pompe a es-
par
l'in-
com
par
le
ressort
commande
le
haut
par
le
bas.
se-
te augmenta-
membrane
mission, et
une pression
ne
vis de re-
le
-
Si
cette vis est vissee, elle pousse plus fermement contre le res-
-
sort de Ia membrane.
II
en resulte plus de pression a l'interieur du
ava
nt que
Ia
Si
Ia
vis est devissee,
soupape
d'adm
ission de !'essence so
le
ressort de membrane se relache.
carb
it
faut done moins de pression d'essence pour fermer
urateur
fermee.
Ia
sou-
il
pape d'essence.
La
qu
antite de pression d'essence est enregistree
tube de niveau d'essence
fixe a l'exterieur du carburateur.
dans
un
Le niveau d'essence variera done avec le niveau du tube
lorsque
Lorsque le niveau de !'essence est stabilise
reglages
teur doivent
tante) est mesuree
n!gla
chambre et
tur
Lorsq ue !'essence entre
est pulverisee, vaporisee et transmise
ge
i.
Ia vis
de reglage sera vissee et devissee.
pour
commander !'essence au venturi du
etre effectues. L'essence (sous press i
par
Ia vis de reglage lent
principal,
iJ
est libere
par
!'orifice de liberation principal dans le ven-
par
!'orifice de liberation de
dan
s le venturi du carburateur, elle
par
par
reglage, deux
carbura
on
cons-
ou
par
Ia
vis de
Ia
I' air dans le carter.
-
- 11 -
GENERAL
1 -3-
2.
Power
Engine
power
ing
manner:
0
The
crankshaft.
through
0
The
secondary
are
mounted
secondary
down
on
the
0
As
the
sprocket.
track.
1.
Primary
As
the
side
the
trifugal force.
causes
the
primary
As a resu
sheave
ing
transmitted
drive
~
2.700
As
engine
further
belt
radially.
constant.
is
pulled
toward
sheave
change;
changed
To
sum
and
the
2. S
econdary
This
manner:
a.
When
secon
by
the
As
engine
b.
ed
together.
center
The V-belt
other
belt
on
diameter
transmission
is
transmitted
primary
through a chain
system.
secondary
at
dary
of
words.
sheave
It
transm
the
V-belt.
sheave
on
sheave.
front
axle.
front axle
The
sprocket
sheave
engine
the
toward
secondary
speed
primary
overcoming
primary sliding
fixed
lt.
the V-belt
and
the
fixed
to
The
r.p.m.
speed
the
Since
the
V-belt
by
the
the
shaft.
diameter
that
is.
according
up,
the
secondary
sheave
rest
or
sliding
rpm
increases.
the
the
secondary
wedges
the
the
primary
on
the
the
sheave
sheave.
the
increases.
fixed s
primary
This
the
reduction
sheave
at
slow
sheave
spr
V-belt is
diameter
secondary shea
to
mounts
its
power
unit
same
through
to
turns.
increases.
cap
is
sheave.
drive
V-belt
heave
the length
on
the
causes
to
secondary
reduction
to
the
sheave
speed
ing.
sheaves.
the
tw o
sheave
the
drive
track
directly
to
the
and
chaincase
shaft.
Power passes
the
drive
the
driven
it
rotates a single
meshes
the
gripped
begins
sheave
load
ratio
varies
operates
is
and
of
with.
the
weights
are
thrown
primary
sheave
side
secondary
to
between
Engine
track
through
turning
the
sliding
and
squeezes
of
the
of
the
and
the
ratio
sheave
ratio is
and
speed
between
from 3. 5 : 1
(and
high
forced
against
primary
pulled
down
the
circle
becomes larger.
ve
becomes
in
the
to
the
secondary
drive
sprocket.
sprocket
and
turn
loc
outward
spr
ing force. This
be
pushed
the
power
is
the
complete
at
about
sheave
out
V -
belt
secondary
forced
of
the
diameter
automatically
of
the
the
crankshaft
to 1 1.
in
the
following
track
load),
fixed
sheaves
closer
sheaves
formed
apart.
by
while
smaller
follow-
engine
sheave
sprocket
from
the
then
mounted
attached
s.
the
ated in-
by
cen-
toward
sliding
now
be-
2,600
moves
the
V-
rem
ains
sheave
to
move
primary
to
engine.
the
sheave
are
forc-
to
the
In
the
V-
the
.
GENERALITE
Ia
1-3-2. Transmission de
La
puissance du
Ia
fac;:on
de
0 La puolie primaire est couplee directement au vilebrequin.
Elle transmet Ia puissance
termediaire d'une courroie en
0 L'unite
chaine sont montes sur
Ia
transmise de Ia poulie secondaire
non de
chaine
avant.
0 Lorsque !'axe avant tourne,
chaine. Le pignon s'engrene et permet le mouvement des
de
chenilles.
Poulie primaire
I.
Lorsque
poids situes
sont projetes vers l'exterieur
lisant
bile primaire est poussee vers Ia poulie fixe primaire.
tre part,
Ia
poulie fixe. La puissance
transmise aux chenilles
commande
moteur
suivante:
de
poulie secondaire et le pignon
commande
au
pignon
Ia
vitcsse
a l'interieur du couvercle de
Ia
force du ressort primai re.
Ia
courroie en V est serree entre Ia poulie mobile et
complet.
a environ 2.600
ue
Lorsq
ie
l
en
cons
par
Par
le
le
fonction de
Pour resumer,
Ia
2.
Poulie secondaire
Cette
Au
a.
condaire mobile est appliquee contre
ressort secondaire.
b. Lorsque
poulies primaires
est
La courroie en V maintient les deux poulies secondaires
parees. En
Ia courroie en V
tandis que
petit.
Ia vitesse
mobile se deplace vers Ia poulie fixe
V,
de
fac;:on
tante, celle-ci du cote
Ia
poulie primaire
suite
le
rapport
diametre
rapport
pou
tiree vers
de
Ia
de
reduction est automatiquement modifie en
Ia
charge
le
lie
secondaire varie de 3,5 : I a I : I.
poulie fonctionne de
repos
ou
a faible vitesse (et forte charge),
Ia
rotation (tpm)
le
bas
d'autres
Ie
diametre
puissance
est transmise a
a
le
de
chaine, puis
de
chaine
il
de
rotation
par
La
courroie en V commence a tourner
~
2.700 tpm.
de
rotation
radiale. La longueur de
de
et
obligee
entre le diametre de Ia poulie primaire et
poulie secondaire change; c'est a dire
et
de Ia vitesse
rapport
de reduction entre
Ia
du
sont
pressees ensembles, Ia courroie en V
vers
le
centre des poulies secondaires.
termes,
le
sur
Ia poulie primaire devient plus
sur
Ia
Ia
piste d'entrainement
Ia
poulie secondaire
V.
de
commande
meme
arbre
. La puissance est
par
l'intermediaire du pig-
par
l'intermediaire de Ia
commande
assure Ia rotation
du
par
Ia force centrifuge, neutra-
du
l'intermediaire du systeme de
du
moteur
Ia
poulie secondaire est tiree
de
fac;:on
moteur
diametre
pou
lie secondaire devient plus
monte sur !'axe
d'un
moteur
Par
moteur
se deplacer vers !'axe.
augmente, les
Ia
poulie primaire
suite Ia poulie mo-
est maintenant
augmente,
et
serre Ia courroie
Ia
courroie
du
moteur.
le
vilebrequin et
suivante:
Ia poulie se-
Ia
poulie fixe
augmente, et que les
du
cercle forme
par
pignon
D'au
Ia
etant
par
grand,
l'in-
de
-
pou-
que
le
se-
par
-12-
2-2
.
Manual
starter
ENGINE
2-2 •
MOTEUR
manuel Demarreur
Tools required:
10
mm
box
13
mm
box
Slotted
he a
wrench
wrench
crewdriver
d
S
(medium)
. I necessaires:
Outt s
Clef
Clef
Tournevts P
10
a tube
. b
a tu e ,
mm
13
mm
our
.
tete
'"
,e
ndue (moyen
)
-
-
------
2. Shea
- e
'
'"""
"'
drum
ve
spring Sh ave cover . . men! d I 8 Ron d'arret 0 6)
Th
3.
""""
4
o.;.,
,,., ''"
washer
'""
""
"''"'
h
.
ng
er
rust
6
. o,;""'""'"" "·
S g <8
·
'"""'
Flat
was
;
'"""'
g D
,;.,
11.
10
'''''' • .,,.,
02
N"'
-
~~~
----
13. Rope Rcssorl du d I 5. d pouhc
Starw
" · ' G
<6. '
" 5
17
. Spring
20.
3.
2<
2
22. Soh R
"'""'
Connector
""d
washer
"""'"'"
Sh,·m
drive plate ·
Bolt
'"""
'"""
"''"
9
18
'"o"
-
D·" .5·0
----
-----:=:~---
I.
3
2. T demarreur Conncclcur .
·
6. Ressorl
61
.
3
8.
.
9
W.
II.
F;g
d demarre I
CofTrel u . .
ambour
Osoo< do
Ressorl
de
d.'""''"'
""'""
do
de
""'""
do
Ploqoo
do
"'""'""'"'
ooodoUo
2.
17
ur
de
pouhe I
ooom"" '
' . . .
nasque I
.
do
'""'
mmande
oommoo ' ·
' '
retour
"""'
00
'"'""
2.
11
3.
4.
,.
7. v,s a l (grover)
"
20. Calc de
"
·
22
H
-3<-
Ecrou
. d
ce
o""'"''
""
d.'"""
"'"'
O
<d"
u
'"'"'''
" " " .
plaque rcur
dom"
Cable (corde)
Po,gn .
C
''"""
'"";
Boulon
''"'""
de·
marreur
'
"
"'
'"'"'"""'
(8
o.; U · ·
.
ENGINE
MOTEUR
2-3-3.
1.
Grease
primary
Thoroughly
shaft
2.
Install
the
To
tool
an
Nut
3.
Grease
shaft.
collars
the
4. Install
fasten
washer
Assembly
the
oil
pump
fixed
sheave.
clean
the
and
fixed
sheave.
the
bearing.
bearing
tighten
iron rod
the
(which
tightening
433.98 ~ 694.37
the
push
into
circlip.
the
primary
it
with
lobe
spring
nut.
nut;
was used
into
the
torque:
spline.
the
sliding
the
primary
sheave
the
to
lock
drive
gear
tapered
and
seat
lock
the
in
disassembling).
starter
in-lbs.
insert
the
sheave
shaft
cap
lock
washer
the
sheave
and
prepare
portions
fit
the
sheave
and
washer.
crankshaft
pulley.
(5.0 ~ 8.0
primary
over
collar
on
the
and
cap.
of
with
or
spring
the
shaft.
groove.
primary
bolt.
to
install
the
to
the
and
the
by
inserting
m-kgs.)
onto
and
shaft.
Bend
the
primary
shaft.
tighten
special
the
put
the
install
and
the
2-3-3. Montage
I.
Graisser
pn!parer
Nettoyer
maire
2.
Monter
serrer l'ecrou du roulement.
Pour
cial (qui a ete utilise
tige de
Le couple de
Graisser
3.
pousser
gorge de
4. Installer
et
Courber
le
pignon
a installer Ia poulie primaire fixe.
entierement les parties chanfreinees de
et
de
Ia
poulie fixe, et
le
roulement,
serrer l'ecrou, bloquer
metal
dans
serrage
5
~
8 m-kg
Ia
cannelure, inserer
Ia
poulie mobile sur l'arbre, placer
l'arbre
primaire et installer
le
capot
de
le
serrer avec
Ia
Ia
rondelle afin de bloquer
d'entrainement
adapter
le
siege du ressort et
le
vilebrequin avec l'outil spe-
pour
le demontage),
Ia
poulie du
de l'ecrou est
le
ressort primaire
Ia
poulie primaire
rondelle frein et
de
Ia
pompe
Ia
poulie
ou
demarreur.
le
suivant:
le
jonc
sur
le
boulon.
le
capot
a huile et se
sur
Ia
rondelle, et
en
pla9ant
le
collier
d'arret.
l'arbre
de
l'arbre
l'arbre.
sur
l'arbre,
dans
primaire,
Ia
poulie.
pri-
une
Ia
-
38-
ENGINE
b.
Check
ed
c.
Check
damaged.
d.
Check
any
e.
Check
damaged.
f.
Check
for
replac e.
g.
Check
severe.
h.
Check
Replace
i.
Check
j.
Check
damaged.
k.
Check
justing
damaged.
ed.
Check
clean
Check
m.
blow
n.
Don't
ly.
the
carburetor
or
holed. replace.
the
threaded
replace.
the
main
other
defect.
the
check
the
arm
wear
or
breakage.
the
arm
replace.
the
pump
any
defective
the
pump
the
gasket
replace.
the
metering
screw
and
the
Replace
with
the
with
the
compressed
the
idle
compressed
main
disassemble
If
the
shaft
body
and
portion
diaphragm
Replace.
valve for
pin. float
of
for
if
cracks
arm,
valve pin,
If
excessively
spring for spring
body
gaskets.
one.
diaphragm.
located
needles
slow
needle
carburetor
bypass
seat
If
over
on
adjusting
is
considered
body.
hole for clogging.
air. Never
nozzle for clogging,
air.
the
choke
mechanism
or
the
choke
lever
pump
body,
the
stop
center
plate
any
defect
and
holes.
and
worn
fatigue. If
upper
bent
or holed. replace.
the
pump
the
ends
screw.
use
and
is
bent. replace.
and
if
screw.
position
is found.
replace
needle
or
broken.
it is
and
lower.
diaphragm.
of
main ad-
If
any
needle
to
be
scratch-
If
clogged.
a wire.
if
necessary,
unnecessari-
crack-
and
and
valve
too
if
if
If
is
MOTEUR
b.
Contr6Ier
s'ils sont feles
pompe et s'ils sont
c. Contr61er
rioree,
d.
Verifier que
pour tout autre defaut. La remplacer
le
corps
Ia
partie filetee de
Ia
remplacer.
Ia
du
ou
troues du
carburateur
et
le
corps de pompe et
carburateur
et
feles ou troues les remplacer.
Ia
vis de butee;
si
elle est dete-
membrane principale est bien centree
si
un defaut est cons-
tate.
e. Verifier que
trou;
f.
Verifier
le
et
le
clapet ne comporte pas de crevasse ou de
le
remplacer s'il est defectueux.
Ia
goupille,
le
bras de flotteur,
Ia
valve de pointeau,
pointeau; s'ils sont uses excessivement ou casses les
rem placer.
g. Verifier que
le
ressort n'est pas detendu; s'il est trop
rem placer.
h.
Verifier les garnitures Uoints) de corps de pompe, superieur
et inferieur et les remplacer s'ils sont defectueux .
1.
Contr6Ier
trouee
J.
Verifier
elle est deterioree
k.
Contr6Ier les pointeaux de debit
principale de reglage et de
Ia
membrane de
Ia
remplacer.
Ia
garniture situee
Ia
remplacer.
Ia
pompe.
sur
Ia
Ia
vis de reglage et de Ia vis de re-
Si
elle est courbee
membrane de
sur
les extremites de
Ia
glage de ralenti.
Si
un
pointeau est deteriore,
comme raye. Remplacer
I.
Verifier que !'orifice de derivation n'est
le
cncrasse
liser de
m. Verifier que
nettoyer avec de !'air
til.
Ia
principale tubulure n'est pas encrassee, et
le
siege de celui -
le
corps de carburateur.
com
ci
pas
encrasse; s'il est
prime. Ne
est considere
necessaire injecter de !'air comprime.
n.
Ne pas demonter
necessaire.
Si
!'axe ou
le
mecanisme diffuscur
le
levier du diffuseur est courbe ,
si
cela n'est pas
rem placer.
le
corps de
pompe.
jamais
dur
Ia
ou
le
ou
Si
vis
uti-
si
le
2-5-4
. A
sse
mbly
Reverse
the
procedure
for
disassembly.
Note:
1.
The
assembly
main
diaphragm
2.
2. Take
care
rect
position. Fit
the
into
the
check
work. or low
3.
When
installing
float
arm
4.
The
choke
5.
When
assembling.
of
gaskets.
and
incorrect service.
operation
so
that
pump
body
valve hole.
performance
the
guide
mechanism
Carburetor
should
completely
the
check
the
rubber
groove. Align
If
not
arm
spring.
pin.
should
be
careful
failures
be
in
the
valve
around
aligned.
will result.
it
should
not
not
to
are
performed
groove
is
installed
the
check
the
valve
the
be
be
disassembled.
reverse
often
caused
in
pump
in
seat
pump
aligned
the
with
the
body
the
cor-
valve lip
with
will
not
with
position
by
dust
2-5-4. Montage
Ia
lnverser
procedure du demontage.
Remarque:
I. L'operation de montage doit etre effectuee,
principale
pompe
2.
Faire attention que
tion. Disposer
dans
avec !'orifice du clapet.
etant entierement
2.
le
clapet soit installe
le
caoutchouc
Ia
gorge du corps de pompe. Aligner
S'il n'est pas aligne
fonctionncra pas, et de mauvais resultats en resulteront.
3.
Lors de !'installation du ressort,
goupille du bras de flotteur.
Lc
mecanisme diffuseur nc doit pas etre demonte.
4.
5.
Lors du montage, faire attention a ne pas inverser
tion des joints. Les pannes de carburateur sont souvent
par
Ia
poussiere et
-50
causees
-
dans
Ia gorge du corps de
dans
autour
du
il
doit etre aligne avec
un
service incorrect.
Ia
membrane
Ia bonne posi-
bord du clapet
le
siege du clapet
Ia
pompe
Ia
posi-
ne
Ia
2- 5-5. Installation
For
installation.
ening
Tigh t
No
tightening
be
specified
they
care.
Tightening torque
164.91
Tightening
60.76
2-
5-6.
1. The
carburetor
stringent
be
disassembled
However.
geographical
require
case
a.
Adjusting
the
regulator
b.
The
eng
ine
The throttle
c.
main
d. The
ing
is larger.
Note
As
the
slow
details.
2.
Adjust
level)
The
depends
therefore.
To adju
the
engine
the
fue
with
tom).
reverse
torque
for
torque
for
should
be
:
in-Jbs. ( 1. 9 m-kgs.)
torque
:
in-lbs
. (0. 7 m-kg)
Adjustments
test
at
according
conditions
readjust
the following
screw
chamber.
adj
ust
screw
idles.
stop screw
jet
to
:
throttle
jet
and
partial
refer
to
ing
the
regulat
performance
greatly
the
regulator must
st.
first
at
idling
l level
pip
the
adjusting
the
procedure
spacer and
for
carburetor mounting
reas
on
of its
tightened with a wrench
for carb
is
properly
the factory
or
ment. cleani ng and in
to
control
opening increases.
the
of
on
remove
e.
screw (locat
adj
. and t
adju
sted
to
(weather.
parts
must be readjusted.
control
to
control
to
the
mixture
jet functio
carbure
or
chamber
the
diaphragm
the
con
the
speed
so
Adjust
for
carburetor:
construction.
for
spacer a
uretor and
uste
d and
heref
ore.
unnecessarily.
operating conditions
altitude.
spection.
the
pressure (fuel
the
mixture
control the
when
the
ns. in
tor
manual.
intern
diti
on
of
the
be
adjusted
fue
l level
pipe
that
the
fuel
the
fuel level as specified
ed
in
the
ENGINE
removal.
nuts
can
and
therefore.
with
special
nd
cylinde
r
air duct
subjected
it
etc.).
idli
ng speed.
throttle
adjust
that
al pressure (fuel
type
regulator.
very
cap. a
moves up
carburetor
to
should
not
it
may
In
this
leve
l)
when
the
open
screw.
order
. For
carburetor
and
care
fully
nd
run
into
bot-
a
or
in
-
.
MOTEUR
2-5-
5.
Installation
Pour !'installation inverser Ia procedure
Co
uple
de
serr
age
pour entr
de
Des couples
burateur
construction et c'est pourquoi, ils doivent etre serr
ef
une cl
Co
uple
de
serrage:
l
,9 m-kg
Co
uple
de
serrage:
0,
7 m-kg
2-5-6. Reglages
ca
I. Le
a.
b.
c.
rburateur est soigneusement regie et rigoureusement
controle
so
n reglage
Toutefois, certaines conditions d'utilisation du scooter ou
circonstances geographiqu
dieter une modification
demontage du carburate ur
il faudra reglcr
Vis
de
reglage
chambre
Vis
de
rcglage (qui regie
moteur tourne
Vis butee d'acce!erateur (qui regie
serrage
ne
peuvent pas etre specifies pour
en
prenant
pour
entretoise et cylindre
pour
carburateur et condu it
en
usine. II
sans
les organes
de
<;le
regulateur.
au
d. Gic!eur principal (qui regie
circu
it
de
marche).
etoi
se
pour
des
precautions speciales.
ne
faut
jamais
necessite.
es
des
pour
suivants:
Ia pr
ess
ion (niveau d'essence) dans Ia
Je
dosage du melange lorsque
raleti).
le
Remarque:
A
mes
ure que l'ouverture
glage, le gicleur du ralent i et lc gicleur parti
en jeu
ccssivcment
nuel du
ca
. Po
rburateur.
ur
des
plus
2. Le reglage du niveau consiste ici a regler Ia pression a
J'
intcrieur de Ia chambre
ment d'un carburate
J"etat
du regulateur. Par conse
regie
avec un soin
suit.
Co
mmencer par enlever Je bou chon du tube
niveau d'essence, et faire tourner
tellc sor
te
que !'essence monte dans
gier
au
niveau specifie a !'aide
carburateur .
de
regulateur. Le bon fonct ionne-
ur
a diaphragme depend avant tout
tout
particulier,
du
demontage.
et carburateur:
les
ecrous
de
montage
d'air
le
demonter ou
(climat, altitude, etc.) peuvent
reglages.
dosage du melange dans
gaz augmente,
de
de
le
nettoyage
le
details,
quent,
en
le
moteur
le
tube
Ia vis prev
D'autre
regime
se
reporter au ma-
ce
dernier
procedant comme
de
ue
du
des
raisons
es
modifier
part, apres
et
le controle,
de
ralenti
Ia
vis de re-
e!
entrent suc-
doit
de
contole du
au
ralenti,
controle. Re-
a Ia base du
car-
avec
etre
de
le
).
le
de
de
51
-
-
ENGINE
Fi
MOTEUR
g. 2-96
-73-
3 -2 .
T
Di
ools requ
sc
ired:
Pliers d
19
mm
brake
open
wrench
-
-en ··-----
---
POWER
- - - -
TRAIN
3-2.
,
Frein a •sq
Outils necessaires:
Pinces
Clef
plate
19
d"
mm
ue
TRAIN
RAINEMENT
D'E=N_T _ _ _
1.
Brake
disk complete
Caliper
Pin
Cotter
body
bo
pin
washer
2. d
3. Caliper
.
4
5 Pin
6.
7 Pin
8. Plain
co
y
mpl
ete
1
2
9 Re
.
Return
10
.
11
.
Bolt
12.
Nut
13. Sp
1
4. N
15
. Sh
turn spnn
spring
ring
washer
ut
im
. g 1
2
F1g
. 3-14
.
-81-
Disque
de
.
rps
upille
d'etrier
d'etrier
ll
e
frein mble I
ense
ensem
ord
inaJre
I.
Corps ble 2
2
.
Co
3.
4. C heville
5. C hevi
6.
Go
7
Cheville .
. Rondelle
8.
Ressort
de
ra
pel I
on
de
grover
P
rap
9. pel 2
I 0.
Ressort
II. Boul
l2.
Ecrou
13.
Rondelle
l4. Ecrou
l5.
Cale
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