PREFACE
This Service Manual describes the
technical features and servicing
procedures for the KYMCO MOVIE
125.
Section 1 contains the precautions for
all operations stated in this manual.
Read them carefully before starting any
operation.
Section 2 is the removal/installation
procedures for the frame covers which
are subject to higher removal/installation
frequency during maintenance and
servicing operations.
Section 3 describes the inspection/
adjustment procedures, safety rules and
service information for each part,
starting from periodic maintenance.
Sections 4 through 19 give instructions
for disassembly, assembly and
inspection of engine, chassis frame and
electrical equipment.
Most sections start with an assembly or
system illustration and troubleshooting
for the section. The subsequent pages
give detailed procedures for the section.
KWANG YANG MOTOR CO., LTD.
OVERSEAS SALES DEPARTMENT
OVERSEAS SERVICE SECTION
TABLE OF CONTENTS
FRAME COVERS/EXHAUST MUFFLER
ENGINE REMOVAL/INSTALLATION
DRIVE AND DRIVEN PULLEYS/KICK
STARTER
FRONT WHEEL/FRONT BRAKE/
FRONT SUSPENSION
REAR WHEEL /REAR BRAKE /REAR
SUSPENSION
BATTERY/CHARGING SYSTEM/A.C.
GENERATOR
LIGHTS/ INSTRUMENTS/SWITCHES
EVAPORATIVE EMISSION CONTROL
SYSTEM
EXHAUST EMISSION CONTROL
SYSTEM
The information and contents
included in this manual may be
different from the motorcycle in case
specifications are changed.
CHASSIS
CONTROEQUIPMENT
ENGINE
Location of Engine Serial Number
.................................
1- 2 CABLE & HARNESS ROUTING
...............................
..................................
.........................
.....................................................
SD25AA
Motorcycle Name & Type
Overall length (mm)
13 (Initial speed
20km/h 1 rider)
Starting motor &
kick starter
9.2:1
Compression pressure
(kg/cm≤-rpm)
Forced pressure &
wet sump
ND
U20FS-U
U22FS-U
U24FS-U
Automatic
centrifugal
type
Engine
System
Fuel System
Carburetor
Electrical
Ignition System
Power Drive System
Transmis-
sion Gear
Reduction
Gear
Moving Device
Damping
Device
SERVICE PRECAUTIONS
n Make sure to install new gaskets, O-rings,
circlips, cotter pins, etc. when
reassembling.
n When tightening bolts or nuts, begin with
larger-diameter to smaller ones at several
times, and tighten to the specified torque
diagonally.
n Use genuine parts and lubricants.
n When servicing the motorcycle, be sure to
use special tools for removal and
installation.
n After disassembly, clean removed parts.
Lubricate sliding surfaces with engine oil
before reassembly.
n Apply or add designated greases and
lubricants to the specified lubrication
points.
n After reassembly, check all parts for
proper tightening and operation.
n When two persons work together, pay
attention to the mutual working safety.
n Disconnect the battery negative (-) terminal
before operation.
n When using a spanner or other tools, make
sure not to damage the motorcycle surface.
n After operation, check all connecting
points, fasteners, and lines for proper
connection and installation.
n When connecting the battery, the positive
(+) terminal must be connected first.
n After connection, apply grease to the
battery terminals.
n Terminal caps shall be installed securely.
n If the fuse is burned out, find the cause and
repair it. Replace it with a new one
according to the specified capacity.
n After operation, terminal caps shall be
installed securely.
n When taking out the connector, the lock on
the connector shall be released before
operation.
n Hold the connector body when connecting
or disconnecting it.
n Do not pull the connector wire.
n Check if any connector terminal is bending,
protruding or loose.
n The connector shall be inserted
completely.
n If the double connector has a lock, lock
it at the correct position.
n Check if there is any loose wire.
n Before connecting a terminal, check for
damaged terminal cover or loose negative
terminal.
n Check the double connector cover for
proper coverage and installation.
n Insert the terminal completely.
n Check the terminal cover for proper
coverage.
n Do not make the terminal cover opening
face up.
n 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.
n After clamping, check each wire to make
sure it is secure.
n Do not squeeze wires against the weld or
its clamp.
n After clamping, check each harness to make
sure that it is not interfering with any
moving or sliding parts.
n When fixing the wire harnesses, do not
make it contact the parts which will
generate high heat.
n Route wire harnesses to avoid sharp edges
or corners. Avoid the projected ends of
bolts and screws.
n Route wire harnesses passing through the
side of bolts and screws. Avoid the
projected ends of bolts and screws.
n Route harnesses so they are neither
pulled tight nor have excessive slack.
n Protect wires and harnesses with electrical
tape or tube if they contact a sharp edge or
corner.
n When rubber protecting cover is used to
protect the wire harnesses, it shall be
installed securely.
n Do not break the sheath of wire.
n If a wire or harness is with a broken sheath,
repair by wrapping it with protective tape
or replace it.
n When installing other parts, do not press or
squeeze the wires.
Do not press or
squeeze the wire.
n After routing, check that the wire harnesses
are not twisted or kinked.
n Wire harnesses routed along with handlebar
should not be pulled tight, have excessive
slack or interfere with adjacent or
surrounding parts in all steering positions.
n When a testing device is used, make sure to
understand the operating methods
thoroughly and operate according to the
operating instructions.
n Be careful not to drop any parts.
n When rust is found on a terminal, remove
the rust with sand paper or equivalent
before connecting.
n Do not bend or twist control cables.
Damaged control cables will not operate
smoothly and may stick or bind.
Do you understand
the instrument? Is
the instrument set
correctly?
n Symbols:
The following symbols represent the
servicing methods and cautions included in
this service manual.
: Apply engine oil to the
specified points. (Use
designated engine oil for
lubrication.)
: Apply grease for lubrication.
: Transmission Gear Oil (90#)
: Use special tool.
: Caution
: Warning
(!12-3) : Refer to page 12-3.
TORQUE VALUES
STANDARD TORQUE VALUES
5mm bolt, nut
6mm bolt, nut
8mm bolt, nut
10mm bolt, nut
12mm bolt, nut
5mm screw
6mm screw, SH bolt
6mm flange bolt, nut
8mm flange bolt, nut
10mm flange bolt, nut
Torque specifications listed below are for important fasteners.
ENGINE
Cylinder head bolt A
Cylinder head bolt B
Oil filter screen cap
Exhaust muffler joint lock nut
Cylinder head nut
Valve adjusting lock nut
Cam chain tensioner slipper bolt
Oil bolt
Clutch outer nut
Clutch drive plate nut
Drive face seal cover bolt
Starter clutch cap bolt
Drive face nut
Spark plug
Starter clutch lock nut
Cam chain tensioner screw
2
4
1
2
4
2
1
1
1
1
3
3
1
1
1
1
8
8
30
6
8
5
6
8
12
12
4
6
12
10
22
6
0.9
0.9
1.5
1.2
2.0
0.9
1.0
1.3
5.5
5.5
0.3
1.2
5.5
1.2
9.5
0.4
Double end bolt
Double end bolt
Apply oil to
threads
Left hand threads
Steering stem lock nut
Front axle nut
Rear axle nut
Rear shock absorber upp er mount bolt
Rear shock absorber lower mount bolt
Speedometer cable set screw
Front shock absorber tube bolt
Front shock absorber upper mount bolt
Front shock absorber lower mount bolt
Front shock absorber hex bolt
Rear shock absorber lower joint lock nut
10
12
14
10
8
5
5
8
8
8
8
12.0
6.0
11.0
4.0
2.5
0.45
0.45
0.1
1.8
3.0
3.5
U-nut
U-nut
U-nut
Apply locking agent
Valve adjuster
Valve guide driver
Valve guide reamer
Valve spring compressor
Lock nut wrench, 39mm
Bearing driver
Bearing driver
Bearing remover, 12mm
Remover set, 12mm
Remover head, 12mm
Remover shaft
Remover weight
Bearing remover set, 15mm
Driver set, 15mm
Driver shaft, 15mm
Driver head, 15mm
Driver weight
Bearing driver
Driver handle
Driver weight
Clutch spring compressor
Outer extension
Crankshaft assembly tool
Crankshaft assembly collar
Crankshaft assembly shaft
Attachment
Lock nut wrench
Lock nut wrench
Ball race remover extension
Ball race remover
Spring compressor
Spring compressor attachment
Spring compressor attachment
Spring compressor attachment
Lock nut wrench
Driver outer extension
Float level gauge
Valve spring compressor
Valve seat cutter, 24.5mm
Cutter clip, 5mm
Universal holder
Outer driver, 32x35mm
Outer driver, 37x40mm
Outer driver, 42x47mm
Pilot, 12mm
Pilot, 15mm
Pilot, 17mm
Pilot, 20mm
Driver handle A
Bearing remover shaft
Bearing remover head, 12mm
Flywheel puller
LUBRICATION POINTS
ENGINE
Valve guide/valve stem movable part
Cam lobes
Valve rocker arm friction surface
Cam chain
Cylinder lock bolt and nut
Piston surroundings and piston ring grooves
Piston pin surroundings
Cylinder inside wall
Connecting rod/piston pin hole
Connecting rod big end
Crankshaft right side oil seal
Crankshaft one-way clutch movable part
Oil pump drive chain
Starter reduction gear engaging part
Countershaft gear engaging part
Final gear engaging part
Bearing movable part
O-ring face
Oil seal lip
•Genuine KYMCO Engine Oil (SAE10W-30)
•API SE, SF or SG Engine Oil
Starter idle gear
Friction spring movable part/shaft movable p art
Shaft movable grooved part
Starter spindle movable part
High-temperature resistant grease
Starter one-way clutch threads
A.C. generator connector
Transmission case breather tube
FRAME
The following is the lubrication points for the frame.
Use general purpose grease for parts not listed.
Apply clean engine oil or grease to cables and movable parts not specified. This will avoid
abnormal noise and rise the durability of the motorcycle.
Front Brake Cable/
Speedometer Cable/
Throttle Cable
Speedometer Gear/ Front Wheel
Bearings/ Brake Cam/ Anchor Pin
/Front Shock Absorber Lower
Mount Bushings/Pivot
Charcoal Canister/
Purge Control Valve
TROUBLESHOOTING
ENGINE WILL NOT START OR IS HARD TO START
Empty fuel tank
Clogged fuel line between fuel
tank and carburetor
Clogged float oil passage
Clogged fuel tank cap breather
hole
Clogged fuel filter
Clogged fuel strainer
Faulty auto fuel valve
Faulty charging system
Faulty spark plug
Fouled spark plug
Faulty CDI unit
Faulty pulser coil
Broken or shorted ignition coil
Broken or shorted exciter coil
Faulty ignition switch
Weak or dead battery
Faulty starter clutch
Valve clearance too small
Improper valve and seat cont act
Worn cylinder, piston and piston
rings
Leaking cylinder head gasket
Seized valve
Improper valve timing
Faulty auto bystarter
Air leaking through intake
pipe
Incorrect ignition timing
Incorrectly adjusted pilot screw
Flooded carburetor
Faulty auto bystarter
Throttle valve excessively
open
Check if fuel reaches
carburetor by
loosening drain screw
Remove spark plug
and install it into
spark plug cap to test
spark by connecting it
to engine ground
Engine fires but
does not start
Test cylinder
compression
Start engine by following normal starting
procedure
Remove spark plug and
inspect again
Fuel does not
reach carburetor
ENGINE LACKS POWER
Clogged air cleaner
Restricted fuel flow
Clogged fuel tank cap breather hole
Clogged exhaust muffler
Faulty auto bystarter
Split carburetor vacuum piston
diaphragm
Faulty auto fuel valve
Faulty CDI unit
Faulty pulser coil
Improper valve clearance
adjustment
Worn valve seat (valve stem too
protruding
Improper valve and seat contact
Worn cylinder and piston rings
Leaking cylinder head gasket
Improper valve timing
Clogged carburetor jets
Fouled spark plug
Incorrect heat range plug
Oil level too high
Oil level too low
Oil not changed
Clogged oil pipe
Faulty oil pump
Worn cylinder and piston rings
Mixture too lean
Poor quality fuel
Excessive carbon buildup in
combustion chamber
Ignition timing too early
Excessive carbon build-up in
combustion chamber
Poor quality fuel
Clutch slipping
Mixture too lean
Ignition timing too early
Start engine and accelerate
lightly for observation
Engine speed does not
increase sufficiently
Check ignition timing
(using a timing light)
Test cylinder compression
Check carburetor for
clogging
Rapidly accelerate or run
at high speed
Remove spark plug and
inspect
Check if engine overheats
Check valve clearance
Remove oil dipstick and
check oil level and condition
Remove cylinder head oil
pipe bolt and inspect
Engine does not
overheats
Plug not fouled or
discolored
Plug fouled or
discolored
Correct and not
contaminated
Incorrect or
contaminated
Valve train lubricated
properly
Valve train not
lubricated properly
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Faulty CDI unit
Faulty pulser coil
Mixture too rich (turn screw
out)
Mixture too lean (turn screw
in)
Deteriorated O-ring
Carburetor not securely
tightened
Damaged insulator rubber
Broken vacuum tube
Faulty or fouled spark plug
Faulty CDI unit
Faulty A.C. generator
Faulty ignition coil
Broken or shorted spark plug
wire
Faulty ignition switch
Faulty air cut-off valve
Damaged vacuum tube
Clogged or damaged air vent
hole
Remove spark plug
and install it into
spark plug cap to test
spark by connecting it
to engine ground
Check carburetor
gasket for air leaks
Check carburetor pilot
screw adjustment
Weak or inter mittent spark
POOR PERFORMANCE (AT HIGH SPEED)
Faulty CDI unit
Faulty pulser coil
Improperly adjusted valve
clearance
Worn valve seat
Empty fuel tank
Clogged fuel tube or filter
Clogged Fuel tank cap breather
hole
Faulty auto fuel valve
Clean and unclog
Cam timing gear aligning
marks not aligned
Faulty spring
Check carburetor jets
for clogging
Check fuel pump for
fuel supply
Check valve spring
tension
POOR CHARGING (BATTERY OVER DISCHARGING OR OVERCHARGING)
Undercharging
Dead battery
Faulty battery
Faulty A.C. generator coil
Broken yellow wire
Loose connector
Broken red wire
Faulty regulator/rectifier
Poorly connected coupler
Faulty A.C. generator
Overcharging
Broken green wire
Poorly connected coupler
Faulty regulator/rectifier
Start engine and test
limit voltage of
battery terminals
Connect battery (+)
wire to
regulator/rectifier
coupler red wire and
battery (-) wire to engine
Battery has
voltage with
ignition switch
Voltage does not
increase
Battery has no
voltage with
ignition switch
Measure resistance
between AC generator
coil terminals
Check
regulator/rectifier
coupler for loose
Connect battery (+)
wire to
regulator/rectifier
coupler green wire and
battery (-) wire to engine
Check
regulator/rectifier
coupler for loose
NO SPARK AT SPARK PLUG
Faulty spark plug
Loose spark plug cap
Poorly connected coupler
Faulty ignition switch
Weak battery
Faulty pulser coil
Faulty ignition coil
Faulty charging system
Broken wire harness
Poorly connected coupler
ÅFaulty CDI unit
ÅFaulty ignition coil
Replace with a new
spark plug and inspect
again
Check CDI unit
coupler for looseness
Measure resistance
between terminals of
CDI unit coupler
Check ignition coil
with a CDI unit tester
Check spark plug cap
and high-tension wire
for looseness
Check CDI unit with a
CDI unit tester
2. FRAME COVERS/EXHAUST MUFFLER
2. FRAME COVERS/EXHAUST MUFFLER
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• When removing frame covers, use special care not to pull them by force because the cover joint
claws may be damaged.
• Make sure to route cables and harnesses according to the Cable & Harness Routing.
TORQUE VALUES
Exhaust muffler lock bolt 3.5kg-m
Exhaust muffler joint lock nut 1.2kg-m
TROUBLESHOOTING
Noisy exhaust muffler
• Damaged exhaust muffler
• Exhaust muffler joint air leaks
Lack of power
• Caved exhaust muffler
• Exhaust muffler air leaks
• Clogged exhaust muffler
......................................
............................
2-1 EXHAUST MUFFLER REMOVAL
2. FRAME COVERS/EXHAUST MUFFLER
FRAME COVERS
REAR HAND GRIP REMOVAL
Remove the six bolts attaching the rear hand
grip.
Remove the rear hand grip.
The installation sequence is the reverse of
removal.
FRAME REAR COVER REMOVAL
Disconnect the third stoplight wire connector.
Remove the frame rear cover.
The installation sequence is the reverse of
removal.
REAR SIDE COVERS REMOVAL
Remove the two screws on the rear end of
each of the rear right and left side covers.
Remove the two screws on the front end of
each of the rear right and left side covers.
Remove the rear right and left side covers by
pulling them backward.
The installation sequence is the reverse of
removal.
FRAME BODY COVER REMOVAL
Remove the two bolts attaching the rear part
of the frame body cover.
Remove the two screws attaching the rear
part of the frame body cover.
During removal, do not pull the joint
claws forcedly to avoid damage.