2004 YAMAHA WOLVERINE 400 oil type

5-13
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-29–8-39.)CAUTION:_

In order to prevent clutch slippage (since
the engine 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.


Make sure that no foreign material enters
the crankcase.
_
Recommended engine oil type and quantity:
See page 10-2.
U5TE61.book Page 13 Tuesday, May 6, 2003 4:40 PM

8-31 1. Engine oil drain bolt
1. Boulon de vidange de l’huile
1. Perno de drenaje del aceite de motor
7. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
8. Insert the dipstick into the oil filler hole, and
then tighten the oil filler cap.
9. Install the panel.
To change the engine oil (with or without oil fil-
ter cartridge replacement)
1. Remove panel F. (See page 8-27 for panel
removal and installation procedures.)
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Place an oil pan under the engine to collect
the used oil, and then remove the engine oil
filler cap.
4. Remove the engine oil drain bolt to drain the
oil from the crankcase.
U5TE61.book Page 31 Tuesday, May 6, 2003 4:40 PM

8-39
‘1. Final gear oil
2. Final gear oil filler bolt
3. Proper oil level
1. Huile de transmission finale
2. Boulon de remplissage d’huile du carter de transmission finale
3. Niveau correct
1. Aceite de la transmisión final
2. Perno del orificio de llenado de aceite de la transmisión final
3. Nivel de aceite adecuado
12. Start the engine and warm it up for several
minutes. While warming up, check for oil
leakage. If oil leakage is found, turn the en-
gine off immediately and check for the cause.
13. Turn the engine off, and then check the oil
level and correct it if necessary.
14. Install panel F.
EBU01145
Final gear oil
Final gear oil measurement
1. Place the machine on a level surface.
2. Remove the oil filler bolt, and then check the
oil level in the final gear case.NOTE:_ The oil level should be at the brim of the filler hole. _3. If the oil is below the brim of the filler hole,
add sufficient oil of the recommended type to
raise it to the correct level.CAUTION:_ Be sure no foreign material enters the final
gear case. _4. Install the oil filler bolt.
U5TE61.book Page 39 Tuesday, May 6, 2003 4:40 PM

8-91

Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down.
U5TE61.book Page 91 Tuesday, May 6, 2003 4:40 PM

10-1
EBU00428
SPECIFICATIONS
Model YFM400FA
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 265 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
U5TE61.book Page 1 Tuesday, May 6, 2003 4:40 PM

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 YFM400FA
-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.
U5TE61.book Page 2 Tuesday, May 6, 2003 4:40 PM

10-3
Final gear oil:
Type SAE 80 API GL-4 Hypoid gear oil
Quantity 0.23 L
Differential gear oil:
Type SAE 80 API GL-4 Hypoid gear oil
Quantity 0.35 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 YFM400FA
U5TE61.book Page 3 Tuesday, May 6, 2003 4:40 PM

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 YFM400FA
U5TE61.book Page 5 Tuesday, May 6, 2003 4:40 PM