2005 YAMAHA YFZ450 recommended oil

5-13
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See page 8-23.)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.
U5TG61.book Page 13 Friday, April 2, 2004 11:28 AM

8-9
NOTE:

Recommended brake fluid: DOT4


Brake fluid replacement:
When disassembling the master cylinders or calipers, replace the brake fluid. Normally check the
brake fluid level and add fluid as required.
On the inner parts of the master cylinders and calipers, replace the oil seals every two years.
Replace the brake hoses every four years, or if cracked or damaged.
U5TG61.book Page 9 Friday, April 2, 2004 11:28 AM

8-25 1. Engine oil tank 2. Engine oil tank filler cap
3. Dipstick 4. Maximum level mark
5. Minimum level mark 6. Engine oil filler cap
1. Réservoir d’huile de moteur
2. Bouchon de remplissage de l’huile de moteur
3. Jauge
4. Repère de niveau maximum
5. Repère de niveau minimum
6. Bouchon de remplissage d’huile de moteur
1. Depósito de aceite de motor
2. Tapa de relleno del depósito de aceite de motor
3. Varilla de medición
4. Marca de nivel máximo
5. Marca de nivel mínimo
6. Tapa del filtro de aceite de motor
3. Remove the engine oil tank filler cap, wipe
the dipstick clean with a clean rag, insert it
back into the 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. _4. If the engine oil is below the minimum level
mark, add sufficient oil of the recommended
type through the engine oil tank filler hole to
raise it to the correct level.NOTE:_ When adding oil, be careful not to overfill the en-
gine oil tank; the oil level rises faster starting from
the half-level-portion on the dipstick. _5. Insert the dipstick into the engine oil tank filler
hole, and then tighten the engine oil tank filler
cap.
U5TG61.book Page 25 Friday, April 2, 2004 11:28 AM

8-33
11. Install the crankcase engine oil drain bolt and
the engine oil tank drain bolt, and then tighten
them to the specified torques.
12. Pour the specified amount of recommended
engine oil through the engine oil tank filler
hole, insert the dipstick, and then tighten the
engine oil tank filler cap.
13. Pour the specified amount of recommended
engine oil through the engine oil filler hole,
and then install and tighten the engine oil filler
cap. Tightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
Tightening torques:
Crankcase engine oil drain bolt:
20 Nm (2.0 m·kgf)
Engine oil tank drain bolt:
19 Nm (1.9 m·kgf)
U5TG61.book Page 33 Friday, April 2, 2004 11:28 AM

8-35
Recommended engine oil:
See page 10-2.
Oil quantity:
Without oil filter element replacement:
Quantity in oil tank:
1.55 L
Quantity in crankcase:
0.20 L
Total amount:
1.75 L
With oil filter element replacement:
Quantity in oil tank:
1.55 L
Quantity in crankcase:
0.30 L
Total amount:
1.85 L
U5TG61.book Page 35 Friday, April 2, 2004 11:28 AM

8-85 1. Brake fluid reservoir cover 2. Bolt (× 2)
1. Cache du réservoir de liquide de frein
2. Boulon (× 2)
1. Cubierta del depósito de líquido de frenos
2. Perno (× 2)
Observe these precautions:

When checking the brake fluid level, make sure
the top of the brake fluid reservoir is level.


Use only the designated quality brake fluid, oth-
erwise, the rubber seals may deteriorate, caus-
ing leakage and poor brake performance.


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. Recommended brake fluid: DOT 4
U5TG61.book Page 85 Friday, April 2, 2004 11:28 AM

8-111
EBU05700
Cable inspection and lubrication
WARNING
_ Inspect cables frequently and replace if dam-
aged. Corrosion can result when the outer cov-
ering of control cables becomes damaged.
Cables can also become frayed or kinked. Op-
eration of controls could be restricted, which
could cause an accident or injury. _Lubricate the inner cables and the cable ends. If
the cables do not operate smoothly, ask a Yamaha
dealer to replace them.
Recommended lubricant:
Engine oil
U5TG61.book Page 111 Friday, April 2, 2004 11:28 AM

10-2
10
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higher
Quantity:
Without oil filter element replacement
With oil filter element replacement1.75 L
1.85 L MODEL YFZ450
-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.
U5TG61.book Page 2 Friday, April 2, 2004 11:28 AM