User Guide
1. GENERAL INFORMATION
1-2
SPECIFICATIONS
Name & Model No.
SD25AA
Motorcycle Name & Type
Overall length (mm)
1820
Overall width (mm)
685
Overall height (mm)
1095
Wheel base (mm)
1215
Engine type
O.H.C.
Displacement (cc)
124
Fuel Used
92# nonleaded gasoline
Front wheel
38.5
Net weight (kg)
Rear wheel
63.5
Total
102.0
Front wheel
67.5
Gross weight(kg)
Rear wheel
158.0
Total
225.5
Front wheel
100-90-10
Rear wheel
100-90-10
Ground clearance (mm)
123
Perform
-
Braking distance (m)
13 (Initial speed
20km/h 1 rider)
ance
Min. turning radius (m)
1.866
Starting system
Starting motor &
kick starter
Type
Gasoline, 4-stroke
Cylinder arrangement
Single cylinder
Combustion chamber type
Semi-sphere
Valve arrangement
O.H.C., chain drive
Bore x stroke (mm)
52.4 x 57.8
Compression ratio
9.2:1
Compression pressure
(kg/cm≤-rpm)
12.8-570
Max. output (ps/rpm)
9.34/7500
Max. torque (kg m/rpm)
1.01/5500
Intake
Open
0° BTDC
Port
(1mm)
Close
25° ABDC
timin
g
Exhaust
Open
33° BBDC
(1mm)
Close
0° TDC
Valve clearance
Intake
0.12
(cold) (mm)
Exhaust
0.12
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
Cooling Type
Forced air cooling
Air cleaner type & No
Paper element, wet
Fuel capacity
7.8 liters
Type
VE45
Piston dia. (mm)
24
Venturi
dia.(mm)
22.1 equivalent
Throttle type
Butterfly type
Type
CDI
Ignition timing
13±3°BTDC/1700rp
m
Contact breaker
Non-contact point
type
Spark plug
NGK
C6HSA
C7HSA
C8HSA
ND
U20FS-U
U22FS-U
U24FS-U
Spark plug gap
0.6_ 0.7mm
Battery
Capacity
12V9AH
Clutch
Type
Dry multi-disc clutch
Type
Non-stage transmission
Operation
Automatic
centrifugal
type
Type
Two-stage reduction
Reduction
1st
2.8
ratio
2nd
3.076
Front
Caster angle
27°
Axle
Trail length
80mm
Tire pressure
Front
1.75
(kg/cm≤)
Rear
2.00 (2.25)
Turning
Left
45°
angle
Right
45°
Brake system
Front
Disk brake
type
Rear
Drum brake
Suspension
Front
Telescope
type
Rear
Swing arm
Shock absorber
Front
Telescope
type
Rear
Swing arm
Frame type
Steel pipe
Tires
Engine
System
Fuel System
Carburetor
Electrical
Ignition System
Power Drive System
Transmis-
sion Gear
Reduction
Gear
Moving Device
Damping
Device