KYMCO Downtown 300i ABS, Service Manual, Page: 5 / 263

1. GENERAL INFORMATION
1-2
Downtown 300i ABS
SPECIFICATIONS
Name Downtown 300i ABS
Model No. SK60AB
Overall length 2200 mm
Overall width 800 mm
Overall height 1410 mm
Wheel base 1545 mm
Engine type 4 stroke O.H.C.
Displacement 298.9 cc
Fuel Used
92# nonleaded
gasoline
Front wheel
79
Rear wheel
110
Total 189
Front wheel
149
Rear wheel
205
Total
354
Ground clearance (mm)
140
Braking distance (m)
7.9m / 40 km/hr
Min. turning radius (m)
2.6
Engine part
Starting system
Starting motor
Type
Gasoline 4-cycle
Cylinder arrangement Single cylinder
Combustion chamber type Semi-sphere
Valve arrangement O.H.C.-4V
Bore x stroke (mm)
φ
72.7 * 72
Compression ratio 10.8:1
Compression pressure
(kg/cm
²
-rpm)
16-570 rpm
Max. output (ps/rpm) 29 / 7750
Max. torque (kg-m/rpm) 2.7 / 6500
Open -9.5° BTDC
Close 37.5° BTDC
Open 40° BTDC
Close 10° BTDC
Intake
0.10
Exhaust
0.10
Idle speed (rpm)
1620±100 rpm
Cooling Type
Liquid cooling
Lubrication type
Forced pressure &
wet sump
Oil pump type Inner/outer rotor
Oil filter type Full-flow filtration
Oil capacity 1.5 liter
Exchanging capacity 1.3 liter
Fuel injection system
Air cleaner type & No Paper element, wet
Fuel capacity 12.5 liters
Brand Keihin
Throttle Body
Butterfly type
Venturi diameter (mm)
34
Fuel pump pressure
43.4 psi (3.0 bar)
Electrical system
Ignition type
ECU
Ignition timing
10°BTDC / idle
33° / 6500min
Spark plug CR7E (NGK)
Spark plug gap 0.6
～
0.7mm
Battery Capacity 12V10AH
Transmission system
Clutch type
Dry multi-disc
Transmission type
CVT
Operation type Auto centrifugal
Reduction gear type
Two-stage reduction
1
st
0.72 ~ 2.24
2nd 7.222
Moving device
Tire type
Tubeless
Front
120/80-14 58S
Rear
150/70-13 64S
Front
2.0
Rear
2.25
Wheel material
Aluminium
Left 40
°
Right 40
°
Front ABS
Rear ABS
Clearance between
Wheel Sensor and
Rotor
Front
0.4-1.2mm
Rear 0.4-1.2mm
Damping Device
Front
Telescope
Rear Swing arm
Shock absorber
stroke
Front 110 mm
Rear 100 mm
Curb weight
(kg)
Max. weight
(kg)
Valve clearance
Exhaust Timing
Intake Timing
Tire spec.
Tire pressure
(kg/cm
²
)
Turning angle
Brake type
Suspension
type
Reduction ratio