2004 YAMAHA YZ85 oil type

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GEN
INFO
FUEL AND ENGINE MIXING OIL
FUEL AND ENGINE MIXING OIL
Mix oil with the gas at the ratio specified below.
Always use fresh, name-brand gasoline, and
mix the oil and gas the day of the race. Do not
use premix that is more than a few hours old.
NOTE:
If knocking or pinging occurs, use a different
brand of gasoline or higher octane grade.
CAUTION:
Never mix two types of oil in the same
batch; clotting of the oil could result. If you
wish to change oil types, be sure to drain
the fuel tank and the carburetor float bowl
of old premix prior to filling with the new
type.
Recommended fuel:
Except for ZA:
Premium unleaded gasoline
only with a research octane
number of 95 or higher.
For ZA:
Premium gasoline
Fuel tank capacity:
5 L (1.10 Imp gal, 1.32 US gal)
Mixing oil
Recommended oil:
Yamalube “2-R”
(Yamalube racing 2-cycle oil)
Mixing ratio: 30 : 1
If unavailable, use an equivalent
type of oil.
5PA10540

SPEC
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GENERAL SPECIFICATIONS
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: YZ85 YZ85LW
YZ85S (USA)
YZ85LC (EUROPE)
YZ85(S)
(CDN, AUS, NZ, ZA)YZ85LW (EUROPE)
YZ85LWS (AUS, NZ)
Model code number: YZ85 YZ85LW
5PA7
(USA, CDN, EUROPE,
NZ, ZA)
5PA8
(AUS)5SH7
(EUROPE, NZ)
5SH8
(AUS)
Dimensions: YZ85 YZ85LW
Overall length 1,821 mm (71.7 in) 1,903 mm (74.9 in)
(USA, S, NZ, ZA)
1,818 mm (71.6 in)
(F, D, I, GB, E, CDN,
AUS)
Overall width 758 mm (28.9 in)←
Overall height 1,161 mm (45.7 in) 1,205 mm (47.4 in)
Seat height 864 mm (34.0 in) 904 mm (35.6 in)
Wheelbase 1,258 mm (49.5 in) 1,286 mm (50.6 in)
(USA, S, NZ, ZA)
1,255 mm (49.4 in)
(F, D, I, GB, E, CDN,
AUS)
Minimum ground clearance 351 mm (13.8 in) 393 mm (15.5 in)
Basic weight: YZ85 YZ85LW
With oil and full fuel tank 71 kg (156.5 lb) 73.9 kg (162.9 lb)
Engine:
Engine type Liquid cooled 2-stroke, gasoline
Cylinder arrangement Single cylinder, forward inclined
Displacement 84.7 cm
3 (2.98 Imp oz, 2.86 US oz)
Bore × stroke 47.5 × 47.8 mm (1.870 × 1.882 in)
Compression ratio 8.2 : 1
Starting system Kickstarter
Lubrication system: Premix (30 : 1) (Yamalube 2-R)
Oil type or grade (2-cycle):
Transmission oil Yamalube 4 (10W-30) or SAE 10W-30 type SE
motor oil
Periodic oil change 0.50 L (0.44 Imp qt, 0.52 US qt)
Total amount 0.55 L (0.48 Imp qt, 0.58 US qt)
Coolant capacity (including all routes): 0.54 L (0.48 Imp qt, 0.57 US qt)
Air filter: Wet type element
2

SPEC
2 - 3
GENERAL SPECIFICATIONS
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (link type monocross suspension)
Shock absorber:
Front shock absorber Coil spring/air, oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel: YZ85 YZ85LW
Front wheel travel 275 mm (10.8 in)←
Rear wheel travel 282 mm (11.1 in) 287 mm (11.3 in)
Electrical:
Ignition system CDI magneto

SPEC
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MAINTENANCE SPECIFICATIONS
CHASSIS
YZ85
Item Standard Limit
Steering system:
Steering bearing type Taper roller bearing ----
Front suspension:
Front fork travel 275 mm (10.8 in) ----
Fork spring free length 430 mm (16.9 in) 425 mm (16.7 in)
Spring rate, STD K = 2.84 N/mm
(0.29 kg/mm, 16.2 lb/in)----
Optional spring Yes ----
Oil capacity318 cm
3
(11.2 Imp oz, 10.8 US oz) ----
Oil level 90 mm (3.54 in) ----

(From top of outer tube with inner
tube and damper rod fully com-
pressed without spring.)80 ~ 120 mm (3.15 ~ 4.72 in) ----
Oil grade Suspension oil “01”----
Inner tube outer diameter 36 mm (1.42 in) ----
Front fork top end 24 mm (0.94 in) ----
Rear suspension: USA, CDN,
AUS, NZ, ZAEUROPE
Shock absorber travel 102 mm (4.02 in)←----
Spring free length 220 mm (8.66 in)←----
Fitting length 215 mm (8.46 in) 212 mm (8.35 in) ----
202.5 ~ 218.5 mm
(7.97 ~ 8.60 in)←----
Spring rate, STD K = 49.0 N/mm
(5.00 kg/mm,
280.0 lb/in)K = 45.0 N/mm
(4.60 kg/mm,
257.6 lb/in)----
Optional spring Yes←----
Enclosed gas pressure 1,000 kPa
(10 kg/cm
2,
142 psi)←----
Swingarm:
Swingarm free play limit
End ---- 1.0 mm (0.04 in)

SPEC
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MAINTENANCE SPECIFICATIONS
YZ85LW
Item Standard Limit
Steering system:
Steering bearing type Taper roller bearing ----
Front suspension:
Front fork travel 275 mm (10.8 in) ----
Fork spring free length 430 mm (16.9 in) 425 mm (16.7 in)
Spring rate, STD K = 2.94 N/mm
(0.30 kg/mm, 16.8 lb/in)----
Optional spring Yes ----
Oil capacity318 cm
3
(11.2 Imp oz, 10.8 US oz) ----
Oil level 90 mm (3.54 in) ----

(From top of outer tube with inner
tube and damper rod fully com-
pressed without spring.)80 ~ 120 mm (3.15 ~ 4.72 in) ----
Oil grade Suspension oil “01”----
Inner tube outer diameter 36 mm (1.42 in) ----
Front fork top end Zero mm (Zero in) ----
Rear suspension: AUS, NZ EUROPE
Shock absorber travel 102 mm (4.02 in)←----
Spring free length 220 mm (8.66 in)←----
Fitting length 207 mm (8.15 in) 212 mm (8.35 in) ----
202.5 ~ 218.5 mm
(7.97 ~ 8.60 in)←----
Spring rate, STD K = 51.0 N/mm
(5.20 kg/mm,
291.2 lb/in)K = 47.0 N/mm
(4.80 kg/mm,
268.8 lb/in)----
Optional spring Yes←----
Enclosed gas pressure 1,000 kPa
(10 kg/cm
2,
142 psi)←----
Swingarm:
Swingarm free play limit
End ---- 1.0 mm (0.04 in)

SPEC
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MAINTENANCE SPECIFICATIONS
EC212300
ELECTRICAL
Item Standard Limit
Ignition system:
Ignition timing (B.T.D.C.) 0.9 mm (0.035 in) ----
Advancer type Electrical ----
CDI:
Magneto-model (stator)/manufac-
turer5PA-00/YAMAHA ----
Charging coil 1 resistance (color) 720 ~ 1,080 Ω at 20 °C (68 °F)
(Green/White – Black/Red)----
Charging coil 2 resistance (color) 44 ~ 66 Ω at 20°C (68 °F)
(Black – Green/Blue)----
Pickup coil resistance (color) 248 ~ 372 Ω at 20°C (68 °F)
(White/Blue – White/Red)----
CDI unit-model/manufacturer 5PA-00/YAMAHA ----
Ignition coil:
Model/manufacturer 5PA-00/YAMAHA ----
Minimum spark gap 6 mm (0.24 in) ----
Primary coil resistance 0.18 ~ 0.28 Ω at 20 °C (68 °F) ----
Secondary coil resistance 6.3 ~ 9.5 kΩ at 20 °C (68 °F) ----
Spark plug cap:
Resistance 4 ~ 6 kΩ at 20 °C (68 °F) ----
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Stator M6 × 1.0 2 8 0.8 5.8
Rotor M10 × 1.25 1 33 3.3 24
Ignition coil M6 × 1.0 2 7 0.7 5.1

SPEC
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CARACTERISTIQUES D’ENTRETIEN
Roue:
Type de roue avant Roue à rayons ----
Type de roue arrière Roue à rayons ----
Taille/matériau de la jante avant 17 × 1,40/Aluminium ----
Taille/matériau de la jante arrière 14 × 1,60/Aluminium ----
Limite de voilage de la jante:
Radial ---- 2,0 mm (0,08 in)
Latéral ---- 2,0 mm (0,08 in)
Chaîne de transmission:
Type/fabricant DID428DS/DAIDO ----
Nombre de maillons 117 maillons + attache ----
Jeu de la chaîne 35
à 45 mm (1,4 à 1,8 in) ----
Longueur de la chaîne (10 maillons) ---- 122,1 mm (4,81 in)
Frein à disque avant:
Diamètre extérieur × Epaisseur 220 × 3,0 mm (8,66 × 0,12 in) 220 × 2,5 mm
(8,66 × 0,10 in)
Limite de déflexion ---- 0,15 mm (0,006 in)
Epaisseur de plaquette 4,0 mm (0,16 in) 0,8 mm (0,03 in)
Diamètre intérieur du maître cylindre 11,0 mm (0,433 in) ----
Diamètre intérieur du cylindre d’étrier 22,22 mm (0,875 in) × 2 ----
Type de liquide de frein DOT n° 4 ----
Frein à disque arrière:
Diamètre extérieur × Epaisseur 190 × 3,0 mm (7,84 × 0,12 in) 190 × 2,5 mm
(7,84 × 0,12 in)
Limite de déflexion ---- 0,15 mm (0,006 in)
Epaisseur de plaquette 3,7 mm (0,15 in) 1,0 mm (0,04 in)
Diamètre intérieur du maître cylindre 12,7 mm (0,500 in) ----
Diamètre intérieur du cylindre d’étrier 27,0 mm (1,063 in) × 1 ----
Type de liquide de frein DOT n° 4 ----
Levier et pédale de frein:
Position du levier de frein 95 mm (3,74 in) ----
Hauteur de la pédale de frein
(distance verticale sous le sommet du
repose-pied)4 à 10 mm (0,16 à 0,39 in) ----
Jeu du levier d’embrayage
(extrémité du levier)10
à 15 mm (0,39 à 0,59 in) ----
Jeu de la poignée des gaz 3
à 5 mm (0,12 à 0,20 in) ---- Elément Standard Limite

SPEC
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CARACTERISTIQUES D’ENTRETIEN
Roue:
Type de roue avant Roue à rayons ----
Type de roue arrière Roue à rayons ----
Taille/matériau de la jante avant 19 × 1,40/Aluminium ----
Taille/matériau de la jante arrière 16 × 1,85/Aluminium ----
Limite de voilage de la jante:
Radial ---- 2,0 mm (0,08 in)
Latéral ---- 2,0 mm (0,08 in)
Chaîne de transmission:
Type/fabricant DID428DS/DAIDO ----
Nombre de maillons 123 maillons + attache ----
Jeu de la chaîne 35
à 45 mm (1,4 à 1,8 in) ----
Longueur de la chaîne (10 maillons) ---- 122,1 mm (4,81 in)
Frein à disque avant:
Diamètre extérieur × Epaisseur 220 × 3,0 mm (8,66 × 0,12 in) 220 × 2,5 mm
(8,66 × 0,10 in)
Limite de déflexion ---- 0,15 mm (0,006 in)
Epaisseur de plaquette 4,0 mm (0,16 in) 0,8 mm (0,03 in)
Diamètre intérieur du maître cylindre 11,0 mm (0,433 in) ----
Diamètre intérieur du cylindre d’étrier 22,22 mm (0,875 in) × 2 ----
Type de liquide de frein DOT n° 4 ----
Frein à disque arrière:
Diamètre extérieur × Epaisseur 190 × 3,0 mm (7,84 × 0,12 in) 190 × 2,5 mm
(7,84 × 0,12 in)
Limite de déflexion ---- 0,15 mm (0,006 in)
Epaisseur de plaquette 3,7 mm (0,15 in) 1,0 mm (0,04 in)
Diamètre intérieur du maître cylindre 12,7 mm (0,500 in) ----
Diamètre intérieur du cylindre d’étrier 27,0 mm (1,063 in) × 1 ----
Type de liquide de frein DOT n° 4 ----
Levier et pédale de frein:
Position du levier de frein 95 mm (3,74 in) ----
Hauteur de la pédale de frein
(distance verticale sous le sommet du
repose-pied)4 à 10 mm (0,16 à 0,39 in) ----
Jeu du levier d’embrayage
(au pivot du levier)10
à 15 mm (0,39 à 0,59 in) ----
Jeu de la poignée des gaz 3
à 5 mm (0,12 à 0,20 in) ---- Elément Standard Limite