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SPEC
MAINTENANCE SPECIFICATIONS
2-5
CHASSIS
Model
YN50R
Steering system:
Steering bearing type
Ball bearing
Front suspension:
Travel of front shock absorber
70 mm
Free length of shock absorber
spring
226 mm
<Limit>
Spring/stroke ratio
(K
1
)
1.12 Kgf/mm
(K
2
)
1.78 Kgf/mm
Oil capacity
45 cm
3
±1
Oil grade
10 W shock absorber oil or equivalent
Rear suspension:
Shock absorber travel
60 mm
Length of spring coupling
221 mm
Spring/stroke ratio
(K
1
)
3.75 Kgf/mm
(K
2
)
7,10 Kgf/mm
Wheels:
Type of front wheel
Alloy rim
Type of rear wheel
Alloy rim
Size/material of front wheel
12 x 3.5 aluminium
Size/material of rear wheel
12 x 3.5 aluminium
Rim run-out limit
Vertical
1.0 mm
Lateral
1.0 mm
Front disc brake
Type
Single
External diameter and disc
thickness
190.0 x 3.5 mm
Thickness of pads
4 mm
<Limit>
<0.8 mm
Internal diameter of master cylinder
11 mm
Internal diameter of calliper
30.16 mm
Brake fluid type
DOT 4
Drum brake:
Type
Shoes
Internal diameter of drum
110 mm
<Limit>
110.5 mm
Lining thickness
4.0 mm
<Limit>
2.0 mm
Brake levers
Free play of brake lever
(right)/position
2 ~ 5 mm /at the end of the lever
Free play of brake lever
(left)/position
5 ~ 10 mm /at the end of the lever