wheel size YAMAHA YZ85 2006 Owners Manual

SPEC
2 - 9
MAINTENANCE SPECIFICATIONS
Wheel:
Front wheel type Spoke wheel ----
Rear wheel type Spoke wheel ----
Front rim size/material 17 × 1.40/Aluminum ----
Rear rim size/material 14 × 1.60/Aluminum ----
Rim runout limit:
Radial ---- 2.0 mm (0.08 in)
Lateral ---- 2.0 mm (0.08 in)
Drive chain:
Type/manufacturer DID428DS/DAIDO ----
Number of links 117 links + joint ----
Chain slack 35 ~ 45 mm (1.4 ~ 1.8 in) ----
Chain length (15 links) ---- 194.3 mm (7.65 in)
Front disc brake:
Disc outside dia. × Thickness 220 × 3.0 mm (8.66 × 0.12 in) 220 × 2.5 mm
(8.66 × 0.10 in)
Deflection limit ---- 0.15 mm (0.006 in)
Pad thickness 4.0 mm (0.16 in) 0.8 mm (0.03 in)
Master cylinder inside dia. 11.0 mm (0.433 in) ----
Caliper cylinder inside dia. 22.22 mm (0.875 in) × 2 ----
Brake fluid type DOT #4 ----
Rear disc brake:
Disc outside dia. × Thickness 190 × 3.0 mm (7.84 × 0.12 in) 190 × 2.5 mm
(7.84 × 0.12 in)
Deflection limit ---- 0.15 mm (0.006 in)
Pad thickness 3.7 mm (0.15 in) 1.0 mm (0.04 in)
Master cylinder inside dia. 12.7 mm (0.500 in) ----
Caliper cylinder inside dia. 27.0 mm (1.063 in) × 1 ----
Brake fluid type DOT #4 ----
Brake lever and brake pedal:
Brake lever position 95 mm (3.74 in) ----
Brake pedal height
(vertical height above footrest top)4 ~ 10 mm (0.16 ~ 0.39 in) ----
Clutch lever free play (lever end) 10 ~ 15 mm (0.39 ~ 0.59 in) ----
Throttle grip free play 3 ~ 5 mm (0.12 ~ 0.20 in) ----Item Standard Limit

SPEC
2 - 11
MAINTENANCE SPECIFICATIONS
Wheel:
Front wheel type Spoke wheel ----
Rear wheel type Spoke wheel ----
Front rim size/material 19 × 1.40/Aluminum ----
Rear rim size/material 16 × 1.85/Aluminum ----
Rim runout limit:
Radial ---- 2.0 mm (0.08 in)
Lateral ---- 2.0 mm (0.08 in)
Drive chain:
Type/manufacturer DID428DS/DAIDO ----
Number of links 123 links + joint ----
Chain slack 35 ~ 45 mm (1.4 ~ 1.8 in) ----
Chain length (15 links) ---- 194.3 mm (7.65 in)
Front disc brake:
Disc outside dia. × Thickness 220 × 3.0 mm (8.66 × 0.12 in) 220 × 2.5 mm
(8.66 × 0.10 in)
Deflection limit ---- 0.15 mm (0.006 in)
Pad thickness 4.0 mm (0.16 in) 0.8 mm (0.03 in)
Master cylinder inside dia. 11.0 mm (0.433 in) ----
Caliper cylinder inside dia. 22.22 mm (0.875 in) × 2 ----
Brake fluid type DOT #4 ----
Rear disc brake:
Disc outside dia. × Thickness 190 × 3.0 mm (7.84 × 0.12 in) 190 × 2.5 mm
(7.84 × 0.12 in)
Deflection limit ---- 0.15 mm (0.006 in)
Pad thickness 3.7 mm (0.15 in) 1.0 mm (0.04 in)
Master cylinder inside dia. 12.7 mm (0.500 in) ----
Caliper cylinder inside dia. 27.0 mm (1.063 in) × 1 ----
Brake fluid type DOT #4 ----
Brake lever and brake pedal:
Brake lever position 95 mm (3.74 in) ----
Brake pedal height
(vertical height above footrest top)4 ~ 10 mm (0.16 ~ 0.39 in) ----
Clutch lever free play (lever end) 10 ~ 15 mm (0.39 ~ 0.59 in) ----
Throttle grip free play 3 ~ 5 mm (0.12 ~ 0.20 in) ----Item Standard Limit

SPEC
2 - 12
MAINTENANCE SPECIFICATIONS
NOTE:
1. First, tighten the steering nut approximately 38 Nm (3.8 m · kg, 27 ft · lb) by using the steering nut
wrench, then loosen the steering nut one turn.
2. Retighten the steering nut 4 Nm (0.4 m · kg, 2.9 ft · lb). Part to be tightened Thread size Q’tyTightening torque
Nm m · kg ft · lb
Upper bracket and outer tube M8 × 1.25 2 22 2.2 16
Lower bracket and outer tube M8 × 1.25 4 20 2.0 14
Upper bracket and steering stem M22 × 1.0 1 125 12.5 90
Handlebar holder and upper bracket M8 × 1.25 4 27 2.7 19
Steering stem and steering ring nut M25 × 1.0 1 Refer to NOTE.
Front fork and front fork cap bolt M40 × 1.0 2 28 2.8 20
Front fork and base valve M22 × 1.0 2 55 5.5 40
Front fork cap bolt and damper rod M10 × 1.0 2 15 1.5 11
Front fork bleed screw and front fork cap bolt M5 × 0.8 2 1 0.1 0.7
Front fork and front fork protector M6 × 1.0 6 7 0.7 5.1
Front fork and brake hose guide M5 × 0.8 1 4 0.4 2.2
Front fork and brake hose holder M6 × 1.0 1 10 1.0 7.2
Throttle grip cap M5 × 0.8 2 4 0.4 2.2
Throttle cable cap M4 × 0.7 2 1 0.1 0.7
Front brake master cylinder M6 × 1.0 2 9 0.9 6.5
Brake lever mounting bolt M6 × 1.0 1 6 0.6 4.3
Brake lever mounting nut M6 × 1.0 1 6 0.6 4.3
Brake lever position locknut M6 × 1.0 1 5 0.5 3.6
Clutch lever holder M5 × 0.8 2 4 0.4 2.2
Front brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Front brake hose union bolt M10 × 1.25 2 26 2.6 19
Front fork and brake caliper bracket M8 × 1.25 2 30 3.0 22
Brake caliper support bolt M8 × 1.25 1 23 2.3 17
Front brake caliper and bleed screw M7 × 1.0 1 6 0.6 4.3
Rear brake caliper and brake caliper bracket M8 × 1.25 2 23 2.3 17
Rear brake caliper and pad pin M10 × 1.0 2 18 1.8 13
Rear brake caliper and bleed screw M8 × 1.25 1 6 0.6 4.3
Front wheel axle and axle nut M12 × 1.25 1 70 7.0 50
Front brake disc M6 × 1.0 3 12 1.2 8.7
Rear brake disc M6 × 1.0 4 12 1.2 8.7
Rear brake master cylinder M6 × 1.0 2 10 1.0 7.2
Rear brake reservoir tank M6 × 1.0 1 10 1.0 7.2
Rear brake hose union bolt M10 × 1.25 2 26 2.6 19
Rear wheel axle and axle nut M14 × 1.5 1 90 9.0 65

SPEC
2 - 13
MAINTENANCE SPECIFICATIONS
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.Part to be tightened Thread size Q’tyTightening torque
Nm m · kg ft · lb
Nipple (spoke)—64 3 0.3 2.2
Rear wheel sprocket M8 × 1.25 4 42 4.2 30
Rear brake caliper protector M6 × 1.0 1 10 1.0 7.2
Drive chain puller adjust bolt and locknut M8 × 1.25 2 16 1.6 11
Engine mounting:
Engine and frame (front) M10 × 1.25 1 69 6.9 50
Engine and frame (lower) M10 × 1.25 1 69 6.9 50
Pivot shaft and nut M12 × 1.25 1 63 6.3 45
Relay arm and frame M10 × 1.25 1 54 5.4 39
Relay arm and connecting rod M12 × 1.25 1 53 5.3 38
Connecting rod and swingarm M12 × 1.25 1 53 5.3 38
Rear shock absorber and frame M10 × 1.25 1 36 3.6 25
Rear shock absorber and relay arm M10 × 1.25 1 36 3.6 25
Rear frame (upper) M8 × 1.25 1 26 2.6 19
Rear frame (lower) M8 × 1.25 2 16 1.6 11
Swingarm and brake hose holder M5 × 0.8 4 1 0.1 0.7
Drive chain tensioner (upper) M8 × 1.25 1 23 2.3 17
Drive chain tensioner (lower) M6 × 1.0 1 10 1.0 7.2
Drive chain support M8 × 1.25 2 16 1.6 11
Drive chain support cover M6 × 1.0 1 7 0.7 5.1
Drive chain guide and swingarm M6 × 1.0 2 10 1.0 7.2
Fuel tank M6 × 1.0 2 7 0.7 5.1
Fuel cock M6 × 1.0 2 4 0.4 2.9
Fuel tank bracket and fuel tank M6 × 1.0 4 7 0.7 5.1
Seat set bracket and fuel tank M6 × 1.0 1 7 0.7 5.1
Radiator cover M6 × 1.0 3 4 0.4 2.9
Front fender M6 × 1.0 4 7 0.7 5.1
Rear fender M6 × 1.0 4 7 0.7 5.1
Flap guard M6 × 1.0 2 7 0.7 5.1
Side cover M6 × 1.0 2 7 0.7 5.1
Seat M6 × 1.0 2 7 0.7 5.1
Number plate M6 × 1.0 1 7 0.7 5.1

7 - 11
TUNSETTING
EC72N000
Drive and driven sprockets setting parts
YZ85:
*For USA and ZA
**For EUROPE, CDN, AUS and NZ
YZ85LW:
Part name Size Part number
Drive (STD)
Sprocket
114T
15T9382A-14227
9382A-15228
Real wheel
sprocket
2*(STD)
** (STD)46T
47T
48T
49T5PA-25446-00
4ES-25447-10
5PA-25448-00
5PA-25449-00
Part name Size Part number
Drive (STD)
sprocket
1 14T
15T9382A-14227
9382A-15228
Real wheel
sprocket
2(STD)51T
52T
53T5PA-25451-00
5PA-25452-00
5PA-25453-00
5PA70120
EC721002
Tire pressure
Tire pressure should be adjust to suit the road
surface condition of the circuit.

Under a rainy, muddy, sandy, or slippery
condition, the tire pressure should be lower
for a larger area of contact with the road sur-
face.

Under a stony or hard road condition, the tire
pressure should be higher to prevent a flat
tire.
Standard tire pressure:
100 kPa (1.0 kgf/cm2, 15 psi)
Extent of adjustment:
60 ~ 80 kPa
(0.6 ~ 0.8 kgf/cm
2, 9.0 ~ 12 psi)
Extent of adjustment:
100 ~ 120 kPa
(1.0 ~ 1.2 kgf/cm
2, 15 ~ 18 psi)