um UXPW125 - Main Technical Parameters

UXPW 125 ENGINE SERVICE MANUAL AND EFI DIAGNOSTIC
- 3 -
MAIN TECHNICAL PARAMETERS
Item
Specification
Engine
Model number
UXPI 125
Type
Single-cylinder, water-cooling,
four-stroke, SOHC
Bore X stroke
Φ52.4×57.8mm
Piston Displacement
124.6 C.C.
Compression ratio
11：1
Valve
Timing
In
Open
（ 5°BTDC）
Close
（37°ABDC）
Out
Open
（50°BBDC）
Close
（3°ATDC）
Max. power
9(1 ±5%)kW/9500(1 ±5%)rpm
Max. torque
10(1 ±5%)N.m. /8000(1 ±5%)rpm
Idle speed
1400±100 r /min
Transmission
System
Clutch
Manual wet multi-plate
Transmission
Constant mesh, two-stage transmission,
5-speed gearshift
Gearshift method
1-N-2-3-4-5
Primary reduction ratio
3.35（67/20）
Gear ratio
1
st
3.077（40/13）
2
nd
1.789(34/19)
3
rd
1.304(30/23)
4
th
1.091(24/22)
5
th
0.929(26/28)