Kymco MO MXU250 Service Manual - chap01 (info generali)
1. GENERAL INFORMATION
MXU 250
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GENERAL INFORMATION
1
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SERIAL NUMBER---------------------------------------------------------- 1- 1
SPECIFICATIONS---------------------------------------------------------- 1- 2
SERVICE PRECAUTIONS------------------------------------------------ 1- 3
TORQUE VALUES --------------------------------------------------------- 1-11
SPECIAL TOOLS ----------------------------------------------------------- 1-12
LUBRICATION POINTS -------------------------------------------------- 1-13
CABLE & HARNESS ROUTING ---------------------------------------- 1-16
WIRING DIAGRAM (OFF ROAD) -------------------------------------- 1-20
WIRING DIAGRAM (ON ROAD) --------------------------------------- 1-21
TROUBLESHOOTING----------------------------------------------------- 1-22
1-0
1. GENERAL INFORMATION
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SERIAL NUMBER
MXU 250
(1) Location of Frame Serial Numbe
1-1
(2) Location of Engine Serial Numbe
1. GENERAL INFORMATION
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m
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p
t
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SPECIFICATIONS
MXU 250
Name & Model No. LB50AD/AA
Motorcycle Name & Type MXU
Overall length 1810 mm (72.4 in)
Overall width (mm) 1050 mm (42 in)
Overall height (mm) 1110 mm (44.4 in)
Wheel base (mm) 1170 mm (46.8 in)
Engine type O.H.C.
Displacement 249 cm3 (15.2 cu-in)
Fuel Used 92# nonleaded gasoline
Front wheel 112 kg (246 lbs)
Dry weight Rear wheel 102 kg (224 lbs)
Total 214 kg (471 lbs)
Front wheel 116 kg (255 lbs)
Curb weight Rear wheel 110 kg (242 lbs)
Total 226 kg (497 lbs)
Tires
Ground clearance 125 mm (5 in)
Min. turning radius 2900 mm (116 in)
Starting system
Type Gasoline, 4-stroke
Cylinder arrangement Single cylinder
Combustion chamber type Semi-sphere
Valve arrangement O.H.C., chain drive
Bore x stroke (mm)
Compression ratio 10.3:1
Compression pressure
Engine
Port
timin
Valve clearance
(cold)
Idle speed (rpm) 1500rpm
Lubrication
S
stem
Cooling Type Liquid cooled
Front wheel 22*7-10
Rear wheel 22*10-10
Electric/Recoil starte
72.7 x 60 mm
(2.9 x 2.4 in)
16 kg/c
Intake
(1mm)
Exhaust
(1mm)
Lubrication type
Oil pump type Trochoid
Oil filter type Full-flow filtration
Oil capacity
Oil exchanging
capacity
Open 8.1° BTDC
Close 41° ABDC
Open 37° BBDC
Close 7.9° ATDC
Intake 0.1 mm (0.004 in)
Exhaust 0.1 mm (0.004 in)
Forced
1.6 L (1.4 lmp qt, 1.7
² (1600kPa,
227 psi)
ressure &
Wet sump
Us qt)
1.4 L (1.23 lmp qt,
1.48 Us q
Air cleaner type & No Wet type element
Fuel S
Fuel capacity 12.5 L (2.63 lmp gal,
stem
Carbureto
Type Piston valve
Main jet NO. 98
Venturi dia. φ22 mm (φ0.88 in)
Throttle type PISTON
I
Electrical Equipment
Power Drive System
Moving Device
Brake syste
type
Damping
Device
Frame type Double cradle
Type Full transistor digital
nition S
Ignition timing 5°BTDC/1000rpm
Contact breaker Non-contact point type
stem
Spark plug DPR7EA-9
Spark plug gap 0.6～0.7mm (0.002～
Battery Capacity 12V12AH
Clutch Type Dry, centrifugal
Transmis-
sion Gear
Type Helical gear/spur gear
Operation
Reduction
Gear
Type Chain drive
Reduction 1st
ratio
Reverse ratio
FR/RR tire rolling
circumference
Tire pressure
Turning Left 40°
angle
Suspension
type
Fron
Rear
Right 40°
Rea
Front Disk brake
Front
Rear
Automatic centrifugal
2nd
1759/1759 mm (71.8/71.8
0.28 kg/c
Double wishbone
Link suspension
3.25 US gal
ignition
0.003 in)
automatic
Type
26.5
10.02
50.9
² (28 Kpa,
3.2 psi)
Disk brake
in)
1-2
1. GENERAL INFORMATION
SERVICE PRECAUTIONS
Make sure to install new gaskets, O-rings,
circlips, cotter pins, etc. when
reassembling.
When tightening bolts or nuts, begin with
larger-diameter to smaller ones at several
times, and tighten to the specified torque
diagonally.
MXU 250
Use genuine parts and lubricants.
When servicing the motorcycle, be sure
to use special tools for removal and
installation.
After disassembly, clean removed parts.
Lubricate sliding surfaces with engine oil
before reassembly.
1-3
1. GENERAL INFORMATION
Apply or add designated greases and
lubricants to the specified lubrication
points.
After reassembly, check all parts for
proper tightening and operation.
MXU 250
When two persons work together, pay
attention to the mutual working safety.
Disconnect the battery negative (-)
terminal before operation.
When using a spanner or other tools,
make sure not to damage the motorcycle
surface.
After operation, check all connecting
points, fasteners, and lines for proper
connection and installation.
When connecting the battery, the positive
(+) terminal must be connected first.
After connection, apply grease to the
battery terminals.
Terminal caps shall be installed securely.
1-4
1. GENERAL INFORMATION
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MXU 250
If the fuse is burned out, find the cause
and repair it. Replace it with a new one
according to the specified capacity.
After operation, terminal caps shall be
installed securely.
Confir
Capacity
When taking out the connector, the lock
on the connector shall be released before
operation.
Hold the connector body when
connecting or disconnecting it.
Do not pull the connector wire.
Check if any connector terminal is
bending, protruding or loose.
1-5
1. GENERAL INFORMATION
The connector shall be inserted
completely.
If the double connector has a lock,
lock it at the correct position.
Check if there is any loose wire.
Before connecting a terminal, check
for damaged terminal cover or loose
negative terminal.
MXU 250
Snapping!
Check the double connector cover for
proper coverage and installation.
Insert the terminal completely.
Check the terminal cover for proper
coverage.
Do not make the terminal cover opening
face up.
Secure wire harnesses to the frame with
their respective wire bands at the
designated locations.
Tighten the bands so that only the
insulated surfaces contact the wire
harnesses.
1-6
1. GENERAL INFORMATION
N
After clamping, check each wire to make
sure it is secure.
Do not squeeze wires against the weld or
its clamp.
MXU 250
After clamping, check each harness to
make sure that it is not interfering with
any moving or sliding parts.
When fixing the wire harnesses, do not
make it contact the parts which will
generate high heat.
o Contact !
Route wire harnesses to avoid sharp
edges or corners. Avoid the projected
ends of bolts and screws.
Route wire harnesses passing through the
side of bolts and screws. Avoid the
projected ends of bolts and screws.
1-7
1. GENERAL INFORMATION
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Route harnesses so they are neither
pulled tight nor have excessive slack.
Protect wires and harnesses with
electrical tape or tube if they contact a
sharp edge or corner.
When rubber protecting cover is used to
protect the wire harnesses, it shall be
installed securely.
MXU 250
Do not pull
ht!
too ti
Do not break the sheath of wire.
If a wire or harness is with a broken
sheath, repair by wrapping it with
protective tape or replace it.
When installing other parts, do not press
or squeeze the wires.
Do not press or
squeeze the wire
.
1-8
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