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5-15
EVU00410
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-23–8-33.)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.
EE.book Page 15 Friday, August 4, 2006 12:02 PM
Page 272 of 422
8-25 1. Maximum level mark 2. Minimum level mark
3. Dipstick 4. Engine oil filler cap
1. Repère de niveau maximum 2. Repère de niveau minimum
3. Jauge
4. Bouchon de remplissage de l’huile moteur
1. Marca de nivel máximo 2. Marca de nivel mínimo
3. Varilla de medición
4. Tapón de llenado de aceite del motor
4. Remove the engine oil filler cap and wipe off
the dipstick with a clean rag.
5. Insert the dipstick in the oil filler hole (without
screwing it in), and then remove it again to
check the oil level.NOTE:_ The engine oil should be between the minimum
and maximum level marks. _6. 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.
7. Insert the dipstick into the oil filler hole, and
then tighten the oil filler cap.
8. Install the console.
EE.book Page 25 Friday, August 4, 2006 12:02 PM
Page 282 of 422
8-35 1. Final gear oil filler bolt 2. Final gear oil
3. Correct oil level
1. Vis de remplissage de l’huile de couple conique arrière
2. Huile de couple conique arrière
3. Niveau d’huile correct
1. Perno de llenado de aceite del engranaje final
2. Aceite del engranaje final
3. Nivel de aceite correcto
EVU00710
Final gear oil
Checking the final gear oil level
1. Place the vehicle 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, and then tighten it to
the specified torque.
Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
EE.book Page 35 Friday, August 4, 2006 12:02 PM
Page 288 of 422
8-41 1. Differential gear oil filler bolt
2. Correct oil level 3. Differential gear oil
1. Vis de remplissage de l’huile de différentiel
2. Niveau d’huile correct 3. Huile de différentiel
1. Perno de llenado de aceite del diferencial
2. Nivel de aceite correcto 3. Aceite del diferencial
EVU00721
Differential gear oil
Checking the differential gear oil level
1. Place the vehicle on a level surface.
2. Remove the differential gear oil filler bolt and
check the oil level. It should be up to the brim
of the filler hole. If the level is low, add suffi-
cient oil of the recommended type to raise it
to the specified level.CAUTION:_ Be sure no foreign material enters the differen-
tial gear case. _3. Install the differential gear oil filler bolt, and
then tighten it to the specified torque.
Tightening torque:
Differential gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
EE.book Page 41 Friday, August 4, 2006 12:02 PM
Page 316 of 422
8-69 1. Crankcase breather hose
1. Durite de mise à l’air du carter moteur
1. Tubo respiradero del cárter
8. Check the sponge material and replace it if
damaged.
9. Thoroughly apply Yamaha foam air filter oil or
other quality liquid foam air filter oil (not spray
type) to the sponge material.NOTE:_ The sponge material should be wet but not drip-
ping. _10. Pull the sponge material over its frame.
11. Install the air filter element.
12. Install the air filter case cover and be sure the
crankcase breather hose is connected.
13. Install the console.
14. Install the seats.
EE.book Page 69 Friday, August 4, 2006 12:02 PM
Page 338 of 422
8-91
The brake fluid reservoir is located under the
hood. (See pages 8-17–8-19 for hood opening
and closing procedures.)
Observe these precautions:
When checking the fluid level, make sure the
top of the brake fluid reservoir is level.
Use only the recommended quality brake fluid.
Otherwise, the rubber seals may deteriorate,
causing leakage and poor braking perfor-
mance.
Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor braking 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. Recommended brake fluid: DOT 4
EE.book Page 91 Friday, August 4, 2006 12:02 PM
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10-1
EVU01050
1 -SPECIFICATIONS
Model YXR66FW
Dimensions:
Overall length 2,885 mm (113.6 in)
Overall width 1,385 mm (54.5 in)
Overall height 1,853 mm (73.0 in)
Seat height 818 mm (32.2 in)
Wheelbase 1,910 mm (75.2 in)
Ground clearance 280 mm (11.0 in)
Minimum turning radius 3,900 mm (154 in)
Basic weight:
With oil and full fuel tank 506.0 kg (1,116 lb)
For Europe: 519.0 kg (1,144 lb)
Noise and vibration level:
Noise level (77/311/EEC) (for Europe) 81.2 dB(A)
Vibration on seat (EN1032, ISO5008) (for Europe) Will not exceed 0.5 m/s
2
Vibration on steering wheel (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 660.0 cm
3
Bore × stroke 100.0 × 84.0 mm (3.94 × 3.31 in)
EE.book Page 1 Friday, August 4, 2006 12:02 PM
Page 403 of 422
10-2
10
Compression ratio 9.10 :1
Starting system Electric starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification API service SG type or higher, JASO standard MAModel YXR66FW
-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.
EE.book Page 2 Friday, August 4, 2006 12:02 PM