Page 293 of 386
5
3
4
2
1
1. Clamp screw (×2) 2. Securing plate
3. Screw 4. Mixing chamber cap
1. Vis de collier (×2)
2. Plaque de fixation du bouchon du carburateur
3. Vis 4. Couvercle de la chambre
1. Tornillos de sujeción (×2)
2. Placa de seguridad de la tapa del carburador
3. Tornillo 4.Tapa de la cámara de mezcla
1.Mixing chamber cap2. Throttle valve
3. Holder 4. Screw (×2) 5. Throttle cable
1. Couvercle de chambre de mélange 2. Papillon d’accélération
3. Support 4. Vis (×2) 5. Câble d’accélération
1. Tapa de la cámara de mezcla 2. Mariposa
3. Soporte 4. Tornillo (×2) 5. Cable de aceleración8-45
4. Loosen the clamp screws on each side of
the carburetor, and then remove the carbu-
retor.
5. Remove the securing plate by removing the
screw.
6. Remove the mixing chamber cap by
unscrewing it.
7. Disconnect the throttle cable from the throt-
tle valve by removing the holder screws and
holder.
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1. Float 2. Pin 3. Needle valve
4. Float arm 5. Main jet
1. Flotteur 2. Goupille 3. Pointeau
4. Bras du flotteur 5. Gicleur principal
1. Flotador 2. Pasador 3. Válvula de aguja
4. Brazo del flotador 5.Surtidor principal
8-47
8. Remove the float chamber by removing the
screws.
9. Remove the float by removing the pin.
10. Remove the needle valve by unhooking it
from the float arm.
11. Change the main jet and the jet needle clip
position. (See page 8-41.)
NOTE:
An optional main jet can be obtained at a
Yamaha dealer.
Assembling the carburetor
1. Install the needle valve by hooking it onto
the float arm.
2. Install the float by inserting the pin into the
holder.
3. Install the float chamber by installing the
screws.
4. Connect the throttle cable onto the throttle
valve by installing the holder and the
screws.
1
2
2
2
5
3 41
2
1. Float chamber 2. Screw1. Cuve à flotteur 2. Vis (×4)1. Cuba 2. Tornillo (×4) 1. Float chamber 2. Screw (×4)1. Cuve à flotteur 2. Vis (×4)1. Cuba 2. Tornillo (×4)
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Page 297 of 386
8-49
5. Install the mixing chamber cap and tighten it.
6. Install the securing plate by installing the
screw.
NOTE:
When installing the securing plate, align the slot
in the securing plate with a projection on the car-
buretor mixing chamber cap.
7. Install the carburetor and tighten the clamp
screws.
8. Connect the fuel hose and the oil hose.
9. Tighten the carburetor float bowl drain
screw.
1. Screw 2. Projection 3. Slot1. Vis 2. Saillie 3. Fente1. Tornillo 2. Protuberancia 3. Ranura
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10-3
Model YFS200
Fuel:
Type Premium unleaded gasoline only
Tank capacity 9 L
Reserve amount 2 L
Carburetor:
Type/quantity VM26SS/1
Manufacturer MIKUNI
Spark plug:
Type/Manufacturer BR8ES/NGK
Spark plug gap 0.7–0.8 mm
Clutch:
Type Wet, multiple-disc
Operation Left hand operation
Transmission:
Primary reduction system Helical gear
Primary reduction ratio 71/22 (3.227)
Secondary reduction system Chain drive
Secondary reduction ratio 40/13 (3.077)
Transmission type Constant mesh 6-speed
Operation Left foot operation
5VM-9-61-06 3/14/03 9:40 PM Page 14