1
. GENERAL INFORMATION
1-2
SPECIFICATIONS
Motorcycle Name & Type
Name & Model No.
SD10AA
Overall length (mm)
1660
Overall width (mm)
680
Overall height (mm)
1070
Wheel base (mm)
1195
Engine type
O.H.C.
Displacement 49.5cc
Fuel Used
92# nonleaded gasoline
Front
wheel
33
Net weight (kg)
Rear wheel
46
Total
79
Front
wheel
32
Gross weight
(kg)
Rear
wheel
52
Total
84
Front wheel
90/90-10 50J
Tires
Rear wheel
90/90-10 50J
Ground clearance (mm)
100
Perform- Braking distance (m)
4.4 (Initial speed
30km/h)
ance
Min. turning radius (m)
1.6
Starting system
Starting motor &
kick starter
Type
Gasoline, 4-stroke
Cylinder arrangement
Single cylinder
Combustion chamber type
Semi-sphere
Valve arrangement
O.H.C.
Bore x stroke (mm)
φ
39 x 41.4
Compression ratio
10.5
Compression pressure
(kg/cm
²
-rpm)
14
−
600
Max. output (ps/rpm)
4.0/8000
Max. torque (kg m/rpm)
1.04/6000
Intake
Open 0
°
BTDC
Port (1mm)
Close 34
°
ABDC
Engine
timing Exhaust Open 32
°
BBDC
(1mm)
Close 0
°
TDC
Valve clearance Intake 0.10
(cold) (mm)
Exhaust 0.10
Idle speed (rpm)
1700rpm
Lubrication type
Forced pressure &
wet sump
Oil pump type
Inner/outer rotor type
Oil filter type
Full-flow filtration
Oil capacity
0.9 liter
Lubrication
System
Cooling Type
Forced air cooling
Air cleaner type & No
Paper element, wet
Fuel capacity
6.2 liter
Type CVK
Piston dia. (mm)
Venturi dia.(mm)
φ
18 equivalent
Carburetor
Throttle type
Butterfly type
Type
CDI
Ignition
timing
15
±
2
°
BTDC/1700rpm
Contact breaker Non-contact point type
Spark plug
NGK
C7HSA
ND
U22FS-U
Spark plug gap
0.6 0.7mm
Battery
Capacity
12V4AH
Clutch Type
Dry multi-disc clutch
Type
Non-stage transmission
Operation
Automatic centrifugal
type
Type Two-stage
reduction
Reduction 1st 10.85 3.0
ratio
2nd
11.05
Front Caster
angle
26.5
°
Axle Trail length
⎯
Tire pressure
Front 1.75
(kg/cm
²
)
Rear 2.25
Turning
Left
45
°
angle
Right 45
°
Brake system
Front Drum (110mm) brake
type
Rear Drum (110mm) brake
Front Telescope
Suspension type
Rear Unit
Swing
Front Telescope
Shock absorber
type
Rear
Unit Swing
Frame type
Under bone
Fuel S
y
stem
Electrical E
q
ui
p
ment
Ig
nition S
y
stem
Power Drive System
Transmis-
si
on Gear
R
educt
ion
Gear
Moving Device
Damping
Device
