Maintenance Specifications -- Chassis

Steering System: 

Steering Bearing Type

Taper Roller Bearing

Front Suspension: 

(Each) Front Fork Travel 

Fork Spring Free Length 
< Limit > 

Spring Rate/Stroke

Optional Spring Oil Capacity 

Oil Grade

Enclosed Air Pressure: 

Standard 

Minimum- Maximum

150 mm (5.9 in)

511 mm (20.1 in)
< 505 mm (19.9 in) >

K, = 3.92 N/mm (0.40 kg/mm, 22.4 lb/in)

0- 100 mm (0- 3.94 in) K₂ = 4.90 N/mm (0.50 kg/mm, 28 lb/in)

100- 150 mm (3.94- 5.90 in) No.

389 cm³ (13.7 Imp oz, 13.2 US oz) YAMAHA Fork & Shock Oil 10wt or equivalent fork oil

39.2 kPa (0.4 kg/cm², 5.7 psi)

Zero- 118 kPa

(Zero - 1.2 kg/cm², Zero - 17.1 psi)

Rear Suspension: (Each) 

Shock Absorber Travel 

Spring Free Length 

Spring Fitting Length 

Spring Rate/Stroke

70 mm (2.76 in)

243.5 mm (9.59 in)

217.5 mm (8.56 in)

K, = 21.6 N/mm (2.2 kg/mm, 123.2 lb/in)
0- 44 mm (0- 1.73 in) 
K₂ = 28.4 N/mm (2.9 kg/mm, 162.3 lb/in)
44- 70 mm (1.73- 2.76 in)

Rear Arm: 

Swingarm Free Play Limit: 
End
Side

1.0 mm (0.04 in) 
1.0 mm (0.04 in)

Wheel: 

Front Wheel Type 

Rear Wheel Type 

Front Rim Size/Material 

Rear Rim Size/Material Rim 

Runout Limit: 
Vertical
Lateral

Cast Wheel 

Cast Wheel

MT2.15x 19/Aluminum 

MT3.00x 16/Aluminum 

2.0 mm (0.08 in) 
2.0 mm (0.08 in)

Disc Brake: 
Type Front 

Outside Dia. x Thickness

Dual disc

267 x 5 mm (10.5 x 0.2 in)

Pad Thickness:

Inner 
<Limit>* 

Outer 
<Limit>*

5.5 mm (0.22 in) 
0.5 mm (0.02 in) 

5.5 mm (0.22 in) 
0.5 mm (0.02 in)

Master Cylinder Inside Dia. 

Caliper Cylinder Inside Dia. 

Brake Fluid Type

15.87 mm (0.62 in) 

38.18 mm (1.50 in) 

DOT #3

Drum Brake: Type Rear Drum Inside Dia.

<Limit> Lining Thickness

<l_imit> Shoe Spring Free Length

Leading trailing

200 mm (7.87 in)

201  mm (7.91 in) 4 mm (0.16 in)

2 mm (0.08 in) 68 mm (2.7 in)

Brake Lever Free Play 

Brake Pedal Position 

Brake Pedal Free Play

2-5mm (0.08 - 0.20 in)/at lever end

10 mm (0.4 in) below the top of the footrest

20-30mm (0.8- 0.12 in)

Part to be tightened

Part name

Thread size

Q'ty

Tightening torque

Remarks

Nm

m-kg

fflb

Engine mounting bolt: 
Front Upper
Front Lower

Nut 
Nut

M10 P1.25 M10P1.25

1 
2

 42

 4.2

30

Rear

Nut

M12 P1.25

2

90

9.0

65

Engine mounting stay

Nut

M8 P1.25

4

33

3.3

24

Downtube

Bolt

M8 P1.25

4

33

3.3

24

Downtube & Cross pipe

Nut

M8 P1.25

2

33

3.3

24

Handle crown & Steering shaft

Nut

M20 P1.0

1

110

11

80

Ring nut (Lower)

Nut

M22 P1.0

1

6

0.6

4.3

See page 6-25

Handle crown & Inner tube

Nut

M8 P1.25

2

20

2.0

14

Handle crown & Handlebar holder

Bolt

M8 PI.25

4

20

2.0

14

Under bracket & Inner tube

Bolt

M8 PI.25

4

23

2.3

17

Front wheel axle

Nut castle

M14 P1.5

1

105

10.5

75

Front wheel axle pinch bolt

Nut self locking

M8 P1.25

1

20

2.0

14

Pivot shaft (Right)

Bolt

M22P1.5

1

5.5

0.55

4.0

Taper roller bearing

Pivot shaft (Left and Right)

Bolt/Nut

M22P1.5

1

100

10.0

72

Rear wheel axle

Nut castle

M14P1.5

1

105

10.5

75

Rear wheel axle pinch bolt

Bolt

M8 P1.25

1

20

2.0

14

Rear shock absorber (Upper).

Nut cap

M8 P1.25

2

20

2.0

14

Rear shock absorber (Lower)

L Nut cap R Bolt

M10P1.25

2

30

3.0

22

Footrest

Bolt

M8 P1.25

4

29

2.9

21

Tension bar & Brake plate

Bolt

M8 P1.25

1

20

2.0

14

Tension bar & Rear arm

Bolt

M8 P1.25

1

20

2.0

14

Camshaft lever & Camshaft

Bolt

M6 P1.0

1

9

0.9

6.5

Disc brake section: Brake disc & Hub (Front)

Bolt

M8 P1.25

12

20

2.0

14

Master cylinder & Brake hose (Front)

Bolt union

M10 P1.25

1

26

2.6

19

Brake hose & Joint

Bolt union

M10 P1.25

1

26

2.6

19

Caliper & Brake hose

Bolt union

M10 P1.25 

2

26

2.6

19

Caliper & Front fork (Front)

| 

4

35

3.5

25

Caliper bleed screw (Ftont)

I 

2

6

0.6

4.3

Front fender

Bolt

M6 P1.0

4

9

0.9

6.5

Final gear & Rear arm

Nut

M10P1.25

4

42

4.2

30

Final gear:

Drive shaft

Nut

M14P1.5

1

110

11

80

Bearing housing

Flange bolt

M8 PI.25

4

25

25

18

Bearing housing

Nut

M8 P1.25

6

23

2.3

17

Oil filler cap

Plug

M14P1.5

1

23

2.3

17

Oil drain screw

Plug

M14P1.5

1

23

2.3

17

Bearing retainer

-

M65P1.5

1

110

11

80

Cross joint

Hexagon bolt with washer

M8 PI .25

4

44

4.4

32

Muffler bracket & Frame

Bolt

M8 PI.25

3

23

2.3

17

Rear fender

Bolt

M10P1.25

2

32

3.2

23

Muffler bracket & Muffler

Bolt

M10P1.25

2

25

2.5

18