Chassis - Yamaha QT50 Service Manual

Lubrication :
Autolube Pump-Color Code
Autolube Pump-Minimum Stroke
Autolube Pump-Maximum Stroke
Oil Tank Capacity
Oil Grade
C. Chassis
Frame:
Frame Design
Steering- System:
Caster
Trail
Number & Size of Balls in Steering Head
Upper Race
Lower Race
Lock to Lock Angle
Front Suspension:
Type
Damper Type
Front Fork Cushion Travel
Front Fork Spring
Free Length
Spring Constant
Wire Diameter x Winding Outside Diameter
Inner Tube Outside Diameter
Rear Suspension:
Type
Damper Type
Rear Shock Absorber Travel
Rear Wheel Travel
Rear Shock Absorber Spring
Free Length
Set Length
Spring Constant
Wire Diameter x Winding Outside Diameter
Fuel Tank:
Capacity
Fuel Grade
Wheel:
Tire Size (Front)
(Rear)
Tire Pressure (Front)
(Rear)
Rim Size (Front)
(Rear)
Rim Run Out Limit (Front/Rear)
Vertical
Lateral
Drive Shaft
Lubricating Grease: Grade
Quantity
7-3
Yellow
0 .20- 0.25 mm (0.008 - 0 .010 in)
0 .95 - 1. 10 mm <0.037 - 0 .043 in)
0 .8
£
(0.7 IMP.qt)
Yamalube 2-cycle oil or equivalent
Steel tube underbone
25 °
7.5 mm (2.95 in)
26 pcs 5/32 in
26 pcs 5/ 32 in
100°
Telescopic fork
Coil spring
45 mm (1 .77 in)
78.0 mm (3.86 in)
kt = 0.55 kg/mm
q,3.2 mm (0.13 in) x q,26.8 mm (1 .06 in)
!/>22.2 mm (0.87 in)
Unit swing
Coil spring. Oil damper
30 mm (1 .18 in)
50 mm (1 .97 in)
150.5 mm (5.93 in)
145.5 mm (5.73 in)
kt
=
6 .32 kg/mm
q,6.4 mm (0.25 in) x q,39.0 mm ( 1.54 in)
2 .3
£
(0.5 IMP.gal)
Regular leaded gasoline
2.00- 14- 4PR
2.25- 14- 4PR
1.25 bar {1.25 kg/cm
2
,
18 psi)
2 .0 bar (2.0 kg/cm
2
•
28 pcsi}
1.20 x 14
1.20x 14
0 .7 mm (0.028 in)
1 .3 mm (0.051 in)
Lithium base wheel bearing grease
(EX. SHELL LETHINAX A)
10 g (0.4 oz)