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9-10
5. Fixer un sac en plastique sur la sortie du pot
d’échappement afin de le protéger contre l’humidi-
té.
6. Si le véhicule est remisé dans un endroit humide ou
exposé à l’air marin, appliquer une fine couche
d’huile sur les surfaces métalliques apparentes. Ne
pas appliquer d’huile sur les pièces en caoutchouc
ni sur la selle.
7. Retirer la batterie et la charger. L’entreposer dans
un endroit sec et la recharger une fois par mois. Ne
pas conserver la batterie dans un endroit excessive-
ment chaud ou froid (moins de 0°C ou plus de
30°C).N.B.:_ Effectuer toutes les réparations nécessaires avant de re-
miser le véhicule. _
5. Ate una bolsa de plástico alrededor de la salida
del tubo de escape para evitar la entrada de hu-
medad.
6. Si se va a realizar el almacenamiento en un
ambiente húmedo o salino, recubra todas las
superficies metálicas expuestas al aire con una
fina película de aceite. No aplique aceite a nin-
guna pieza de goma ni a la funda del sillín.
7. Desmonte la batería y cárguela. Guárdela en
un lugar seco y recárguela una vez al mes. No
guarde la batería en un sitio demasiado frío (a
una temperatura inferior a 0°C) o demasiado
caliente (a una temperatura superior a 30°C).NOTA:_ Antes de guardar la máquina, efectúe las reparacio-
nes necesarias. _
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10-1
EBU00428
SPECIFICATIONS
Model YFM400A
Dimensions:
Overall length 1,984 mm
Overall width 1,085 mm
Overall height 1,120 mm
Seat height 827 mm
Wheelbase 1,233 mm
Ground clearance 245 mm
Minimum turning radius 3,000 mm
Basic weight:
With oil and full fuel tank 250 kg
Noise and vibration level:
Noise level (77/311/EEC) (for Europe) 77.2 dB (A)
Vibration on seat (EN1032, ISO5008) (for Europe) Will not exceed 0.6 m/s
2
Vibration on handlebar (EN1032, ISO5008)
(for Europe)Will not exceed 2.5 m/s
2
Engine:
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 401 cm
3
Bore
× stroke 84.5
× 71.5 mm
Compression ratio 10.5 :1
Starting system Electric and recoil starter
Lubrication system Wet sump
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10-2
10
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higher
Quantity:
Without oil filter cartridge replacement
With oil filter cartridge replacement2.3 L
2.4 L Model YFM400A
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
In order to prevent clutch slippage (since the en-
gine oil also lubricates the clutch), do not mix any
chemical additives. Do not use oils with a diesel
specification of “CD” or oils of a higher quality
than specified. In addition, do not use oils labeled
“ENERGY CONSERVING II” or higher.
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10-3
Final gear oil:
Type SAE 80 API GL-4 Hypoid gear oil
Quantity 0.19 L
Radiator capacity (including all routes): 1.32 L
Air filter: Wet element
Fuel:
Type Unleaded gasoline only
For Europe: Regular unleaded gasoline only with a
research octane number of 91 or higher
Fuel tank capacity 15 L
Fuel reserve amount 4.5 L
Carburetor:
Type/quantity BSR33/1
Manufacturer MIKUNI
Spark plug:
Type/manufacturer DR8EA / NGK
Spark plug gap 0.6–0.7 mm
Clutch type: Wet, centrifugal automaticModel YFM400A
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10-4
Transmission:
Primary reduction system V-belt
Secondary reduction system Spur gear
Secondary reduction ratio 39/24
× 24/18
× 33/9 (7.944)
Transmission type V-belt automatic
Operation Left hand operation
Forward gear 38/23 (1.652)
Reverse gear 29/17 (1.706)
Chassis:
Frame type Steel tube frame
Caster angle 4°
Trail 21 mm
Tire:
Type Tubeless
Size front AT25
×8 - 12
rear AT25
× 10 - 12
Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Drum brake
operation Left hand and right foot operation Model YFM400A
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10-5
Suspension:
Front suspension Double wishbone
Rear suspension Swingarm (monocross)
Shock absorber:
Front shock absorber Coil spring / oil damper
Rear shock absorber Coil spring / oil damper
Wheel travel:
Front wheel travel 160 mm
Rear wheel travel 180 mm
Electrical:
Ignition system DC-C.D.I.
Generator system A.C. magneto
Battery type YTX14AH (For Europe)
YTX20L-BS (For Oceania)
Battery voltage, capacity 12 V, 12 Ah (For Europe)
12 V, 18 Ah (For Oceania)
Headlight type: Krypton bulbModel YFM400A
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10-6
Bulb voltage, wattage
× quantity:
Headlight 12 V, 30/30 W
× 2
Tail/brake light 12 V, 5/21 W
× 1
Meter lighting 14 V, 3 W
× 1
Neutral indicator light 12 V, 1.7 W
× 1
Reverse indicator light 12 V, 1.7 W
× 1
Coolant temperature warning light 12 V, 1.7 W
× 1
Fuse:
Main fuse 30 A
Headlight fuse 15 A
Ignition fuse 10 A
Auxiliary DC jack fuse 10 A
Signaling system fuse 10 AModel YFM400A
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10-7
FBU00428
CARACTÉRISTIQUES TECHNIQUESModèle YFM400A
Dimensions:
Longueur hors tout 1.984 mm
Largeur hors tout 1.085 mm
Hauteur hors tout 1.120 mm
Hauteur de la selle 827 mm
Empattement 1.233 mm
Garde au sol 245 mm
Rayon de braquage minimal 3.000 mm
Poids en ordre de marche:
Avec pleins d’huile et de carburant 250 kg
Niveau de bruit et de vibrations:
Niveau de bruit (77/311/EEC) (Pour l’Europe) 77,2 dB (A)
Vibrations sur la selle (EN1032, ISO5008)
(Pour l’Europe) 0,6 m/s
2 maximum
Vibrations au guidon (EN1032, ISO5008)
(Pour l’Europe) 2,5 m/s2 maximum
Moteur:
Type de moteur 4 temps, refroidissement par liquide, arbre à cames en tête
(SOHC)
Disposition du cylindre Monocylindre incliné vers l’avant
Cylindrée 401 cm3
Alésage ×
course 84,5 ×
71,5 mm
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