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) φ39 x 41.4
Compression ratio 10.5
Compression pressure
(kg/cm²-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) φ18 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 0.60.7mm
Battery Capacity 12V4AH
Clutch Type Dry multi-disc clutch
Type Non-stage transmission
Operation
Automatic centrifugal
type
Type Two-stage reduction
Reduction 1st
10.853.0
ratio
2nd
11.05
Front Caster angle 26.5°
Axle
Trail length ⎯
Fron
1.75
(kg/cm²)
Rear 2.25
Turning Left 45°
angle
Right 45°
Front Drum
110mm
brake
type
Rear Drum (110mm) brake
Fron
Telesco
e
Suspension type
Rear Unit Swing
Front Telescope
Shock absorber
type
Rear
Unit Swing
Frame type Under bone
Fuel S
stem
Electrical E
ui
ment
I
nition S
stem
Power Drive System
Transmis-
sion Gear
Reduction
Gear
Moving Device
Damping
Device