Yingang YG125-30B, Manual, Page: 9 / 151

YG125-30B Maintenance Manual Overview
7
D
ri
v
ing
sys
tem
Clutch
Clutch operating system
Variable speed gear
Primary reduction ratio
Transmission gear ratio
Final reduction ratio
Gear shifting mode
Wet clutch, coil clutch, paper friction wafer
Manual mechanical
5-speed constant mesh
3.35
Ⅰ 3.077
Ⅱ 1.789
Ⅲ 1.304
Ⅳ 1.091
V 0.929
3.333
Left foot operated to and back type
Sequence: I
－
N
－Ⅱ－Ⅲ－Ⅳ -V
Eng
ine
Mode
Cylinder bore
×
Stroke
Cylinder displacement
Compression ratio
Max. power
Max. torque
Valve clearance (cold)
Valve driving gear
Air filter
Cooling method
Lubrication method
Engine oil grade
Engine oil charge volume
Engine oil filter element
Electric motor starting
Idle speed
Net weight of engine
Single-cylinder force air
–
cooling 4-stroke engine
52.4mm
×
57.9mm
125cc
9.0:1
6.8kw/7500rpm
9N.m/6500rpm
IN: 0.06-0.08
EX: 0.06-0.08
Chain drive
Oilpaper filter
force air -cooling
Please apply Shell 10W/40-SF engine oil in summer and 10W/30-SF in
winte
1L
Oilpaper filter
Electric / foot start
1500
±
150r/min
28.5
±
1kg