Kymco MO P125, MO P 150 Service Manual - chap 01 (info general)

1. GENERAL INFORMATION

1-1

PEO PLE 12 5/ 15 0

1

GENERAL INFORMATION

ENGINE FRAME VIN SERIAL NUMBER ...................................1-2

SPECIFICATIONS (125 CC) .......................................................1-3

SPECIFICATIONS (150 CC) .......................................................1-4

SERVICE PRECAUTIONS ..........................................................1-5

TORQUE VALUES......................................................................1-7

TOOLS........................................................................................1-8

LUBRICATION POINTS .............................................................1-9

CABLE & HARNESS ROUTING............................................... 1-11

WIRING DIAGRAM (125 CC)................................................... 1-16

WIRING DIAGRAM (150 CC)................................................... 1-17

TROUBLESHOOTING.............................................................. 1-18

1

1. GENERAL INFORMATION

1-2

PEO PLE 125/150

Location of Engine Serial Number

Vehicle Identification Serial Number

Location of Frame Serial Number

ENGINE FRAME VEHICLE IDENTIFICATION SERIAL NUMBER

1. GENERAL INFORMATION

1-3

PEO PLE 125/150

SPECIFICATIONS

Name & Model No.

PEOPLE 125

Overall length (mm)

1950

Overall width (mm)

690

Overall height (mm)

1075

Wheel base (mm)

1335

Engine type

O.H.C.

Displacement (cc)

125

Fuel Used

92# nonleaded gasoline

Front wheel

41

Net weight (kg)

Rear wheel

70

Total

111

Front wheel

65

Gross weight(kg)

Rear wheel

116

Total

181

Front wheel

80/80-16 45P

Rear wheel

100/80-16 56P

Ground clearance (mm)

160

Perform

-

Braking distance (m)

4.4 (30km/h)

ance

Min. turning radius (m)

2

Starting system

Starting motor &

kick starter

Type

OHC air cooled 4-cycle

Cylinder arrangement

Single cylinder

Combustion chamber type

Semi-sphere

Valve arrangement

O.H.C., chain drive

Bore x stroke (mm)

52.4 x 57.8

Compression ratio

9.6:1

Compression pressure

(kg/cm_)

13

Max. output (ps/rpm)

9.6/7500

Max. torque (kg m/rpm)

1.0/6500

Intake

Open

7.3

Valve

(mm)

Close

0

timin

g

Exhaust

Open

6.9

(mm)

Close

0

Valve clearance

Intake

0.10

(cold) (mm)

Exhaust

0.10

Idle speed (rpm)

1700rpm

Lubrication type

Forced pressure &

wet sump

Oil pump type

Inner/outer rotor

type

Oil filter type

Full-flow filtration

Oil capacity

0.91 liter

Exchanging capacity

0.81 liter

Cooling Type

Forced air cooling

Air cleaner type & No

Paper element

Fuel capacity

6.8 liters

Type

VE

Piston dia. (mm)

24

Venturi

dia.(mm)

22.1 equivalent

Throttle type

Butterfly type

Type

CDI

Ignition timing

15°~28°BTDC/1700r

Contact breaker

Non-contact point

type

Spark plug

NGK C7HSA

Spark plug gap

0.6_ 0.7mm

Battery

Capacity

12V6AH

Clutch

Type

Dry multi-disc clutch

Type

Non-stage transmission

Operation

Automatic
centrifugal

type

Type

Two-stage reduction

Reduction

1st

0.86~2.64

ratio

2nd

10.98

Front

Caster angle

25°

Axle

Trail length

Tire pressure

Front

1.75

(kg/cm_)

Rear

2.00 (2.25)

Turning

Left

45°

angle

Right

45°

Brake system

Front

Disk brake

type

Rear

Drum brake

Suspension

Front

Telescope

type

Rear

Swing arm

Shock absorber

Front

Telescope

type

Rear

Swing arm

Frame type

Steel pipe

Tires

Engine

System

Fuel System

Carburetor

Electrical

Ignition System

Power Drive System

Transmis-

sion Gear

Reduction

Gear

Moving Device

Damping

Device

1. GENERAL INFORMATION

1-4

PEO PLE 125/150

SPECIFICATIONS

Name & Model No.

PEOPLE 150

Overall length (mm)

1950

Overall width (mm)

690

Overall height (mm)

1075

Wheel base (mm)

1335

Engine type

O.H.C.

Displacement (cc)

150

Fuel Used

92# nonleaded gasoline

Front wheel

41

Net weight (kg)

Rear wheel

70

Total

111

Front wheel

65

Gross weight(kg)

Rear wheel

116

Total

181

Front wheel

80/80-16 45P

Rear wheel

100/80-16 56P

Ground clearance (mm)

160

Perform

-

Braking distance (m)

4.4 (30km/h)

ance

Min. turning radius (m)

2

Starting system

Starting motor &

kick starter

Type

OHC air cooled 4-cycle

Cylinder arrangement

Single cylinder

Combustion chamber type

Semi-sphere

Valve arrangement

O.H.C., chain drive

Bore x stroke (mm)

57.4 x 57.8

Compression ratio

9.2:1

Compression pressure

(kg/cm_)

15

Max. output (ps/rpm)

10.5/7500

Max. torque (kg m/rpm)

1.1/5500

Intake

Open

7.3

Valve

(mm)

Close

0

timin

g

Exhaust

Open

6.9

(mm)

Close

0

Valve clearance

Intake

0.10

(cold) (mm)

Exhaust

0.10

Idle speed (rpm)

1700rpm

Lubrication type

Forced pressure &

wet sump

Oil pump type

Inner/outer rotor

type

Oil filter type

Full-flow filtration

Oil capacity

0.91 liter

Exchanging capacity

0.81 liter

Cooling Type

Forced air cooling

Air cleaner type & No

Paper element

Fuel capacity

6.8 liters

Type

VE

Piston dia. (mm)

24

Venturi

dia.(mm)

22.1 equivalent

Throttle type

Butterfly type

Type

CDI

Ignition timing

15°~28°BTDC/1700r

Contact breaker

Non-contact point

type

Spark plug

NGK C7HSA

Spark plug gap

0.6_ 0.7mm

Battery

Capacity

12V6AH

Clutch

Type

Dry multi-disc clutch

Type

Non-stage transmission

Operation

Automatic
centrifugal

Type

Type

Two-stage reduction

Reduction

1st

0.86~2.64

ratio

2nd

10.98

Front

Caster angle

25°

Axle

Trail length

Tire pressure

Front

1.75

(kg/cm_)

Rear

2.00 (2.25)

Turning

Left

45°

angle

Right

45°

Brake system

Front

Disk brake

type

Rear

Drum brake

Suspension

Front

Telescope

type

Rear

Swing arm

Shock absorber

Front

Telescope

type

Rear

Swing arm

Frame type

Steel pipe

Tires

Engine

System

Fuel System

Carburetor

Electrical

Ignition System

Power Drive System

Transmis-

sion Gear

Reduction

Gear

Moving Device

Damping

Device

1. GENERAL INFORMATION

1-5

PEO PLE 125/150

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.

1. GENERAL INFORMATION

1-6

PEO PLE 125/150

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.

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.

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

Engine Oil
Grease

Gear Oil

Special

＊

1. GENERAL INFORMATION

1-7

PEO PLE 125/150

TORQUE VALUES

STANDARD TORQUE VALUES

Item

Torque (kg-m)

Item

Torque (kg-m)

5mm bolt, nut
6mm bolt, nut

8mm bolt, nut
10mm bolt, nut
12mm bolt, nut

0.45_ 0.6　

0.8_ 1.2

1.8_ 2.5

3.0_ 4.0

5.0_ 6.0

5mm screw

6mm screw, SH bolt
6mm flange bolt, nut
8mm flange bolt, nut

10mm flange bolt, nut

0.35_ 0.5

0.7_ 1.1

1.0_ 1.4

2.0_ 3.0

3.5_ 4.5

Torque specifications listed below are for important fasteners.

ENGINE

Item

Q‘ty

Thread dia.(mm)

Torque (kg-m)

Remarks

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

8
8
5
6

8
12
12

4

6
12
10
22

6

0.9

0.9

1.5

2.2

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

FRAME

Item

Q‘ty

Thread dia.(mm)

Torque (kg-m)

Remarks

Steering stem lock nut
Front axle nut

Rear axle nut
Rear shock absorber upper 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

1
1

1
1
1
1
1
2
2
1
1

10
12

14
10

8
5
5
8
8
8
8

12.0

6.0

12.0

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

1. GENERAL INFORMATION

1-8

PEO PLE 125/150

SPECIAL TOOLS

Tool Name

Tool No.

Remarks

Ref. Page

FLYWHEEL PULLER

LOCK NUT SOCKET WRENCH

TAPPET ADJUSTER

OIL SEAL & BEARING INSTALL

FLYWHEEL HOLDER

BEARING PULLER

BEARING PULLER

BEARING PULLER

BEARING PULLER

BUSHING REMOVER

FLYWHEEL HOLDER

LONG SOCKET WRENCH

CLUTCH SPRING COMPERESSOR

CRANKSHAFT PROTECTOR

CRANKSHAF BEARING PULLER

BUSHING REMOVER

LONG SOCKET WRENCH

CUSHION ASSEMBLEN &

DISASSEMBLE TOOL

RACE CONE INSTALL

TOOL BOOX

E002

E009

E012

E014

E017

E008

E018

E020

E031

E019

E021

E022

E027

E029

E030

E032

F002

F004

F005

E033

14-8

16-7

3-5

11-4,12-5

9-3,14-10

10-4

10-4

10-4

13-0

9-3,9-13

9-8

11-0

6-0

12-5

13-0

12-16

1. GENERAL INFORMATION

1-9

PEO PLE 125/150

LUBRICATION POINTS

ENGINE

Lubrication Points

Lubricant

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 (SAE15W-40)

•API SE, SF or SG Engine Oil

Starter idle gear

Friction spring movable part/shaft movable part

Shaft movable grooved part

Starter spindle movable part

High-temperature resistant grease

Starter one-way clutch threads

Thread locking agent

A.C. generator connector

Transmission case breather tube

Adhesive

1. GENERAL INFORMATION

1-10

PEO PLE 125/150

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.

Seat Lock

Rear Wheel Bearings

Grease

Front Brake Cable/
Speedometer Cable/
Throttle Cable

Main Stand Pivot

Speedometer Gear/ Front Wheel
Bearings/ Brake Cam/ Anchor Pin
/Front Shock Absorber Lower
Mount Bushings/Pivot

Engine Oil

Grease

Grease

Grease

Grease

Front Brake Lever
Pivot

Engine Oil

Rear Brake Cable

Brake Cam/
Anchor Pin

Grease

1. GENERAL INFORMATION

1-11

PEO PLE 125/150

CABLE & HARNESS ROUTING

Front Stop Switch Wire

Rear Stop Switch Wire

Throttle Cable

Regulator/
Rectifier

Resistor

Front
Brake
Fluid
Tube

Rear Brake Cable

Speedometer Cable

Horn

Instrument Cable

Ignition Switch

Front Brake Fluid Tube

Front Brake Reservoir

1. GENERAL INFORMATION

1-12

PEO PLE 125/150

Throttle Cable

Regulator/Rectifier

Speedometer Cable

Wire Harness

Resistor

Front Brake Fluid Tube

Rear Brake Cable

1. GENERAL INFORMATION

1-13

PEO PLE 125/150

Wire Harness

Reserve Fuse

Fuse

Battery (+) Cable

Battery (-) Cable

CDI Unit

1. GENERAL INFORMATION

1-14

PEO PLE 125/150

Fuel Valve Vacuum Tube

Throttle Cable

Vacuum Tee

Fuel Tube

Ignition Coil

Auto Bystarter Wire

Crankcase Breather Tube

Ground

A.C.
Generator
Wire

1. GENERAL INFORMATION

1-15

PEO PLE 125/150

Throttle Cable

Fuel Tube

Carburetor
Vacuum Tube

Auto Bystarter Wire

Starter Motor Wire

Auto Bystarter

Fuel Vapor Tube

Fuel Unit

Wire Harness

Crankcase Breather
Tube

Vacuum Tee

Starter Relay

Wire Harness

Air Cleaner

1. GENERAL INFORMATION

1-16

PEO PLE 125/150

WIRING DIAGRAM

1. GENERAL INFORMATION

1-17

PEO PLE 125/150

WIRING DIAGRAM

150 cc ( SINGAPORE )

1. GENERAL INFORMATION

1-18

PEO PLE 125/150

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 contact
Worn cylinder, piston and pist on
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

Inspection/Adjustment

Probable Cause

Spark jumps

Normal
compression

Engine does not
fire

Weak or no spark

Low or no
compression

Engine fires but
does not start

Test cylinder
compression

Start engine by follow­ing normal starting
procedure

Remove spark plug and
inspect again

Symptom

Fuel reaches
carburetor

Fuel does not
reach carburetor

Wet spark plug

Dry spark plug

1. GENERAL INFORMATION

1-19

PEO PLE 125/150

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

Inspection/Adjustment

Symptom

Probable Cause

Engine speed
increases

Correct timing

Engine speed does not
increase sufficiently

Incorrect timing

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

Correct

Incorrect

Normal

compression

Abnormal
compression

Remove oil dipstick and
check oil level and condition

Remove cylinder head oil
pipe bolt and inspect

Engine overheats

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

Engine does not knock

Engine knocks

Not clogged

Clogged

1. GENERAL INFORMATION

1-20

PEO PLE 125/150

POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)

Faulty CDI unit
Faulty pulser coil

The woodruff key in the
crankshaft is not fixed
position.

Mixture too rich (turn screw
out)
Mixture too lean (turn screw

in)

Deteriorated O-ring
Carburetor is 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

Inspection/Adjustment

Symptom

Probable Cause

Check ignition timing

Check air cut-off

Check carburetor
gasket for air leaks

Check carburetor pilot
screw adjustment

Correct timing

Incorrect timing

Correctly adjusted

No air leak

Air leaks

Good spark

Weak or inter­ mittent spark

Good

Faulty

Incorrectly

1. GENERAL INFORMATION

1-21

PEO PLE 125/150

POOR PERFORMANCE (AT HIGH SPEED)

Faulty CDI unit
Faulty pulser coil

The woodruff key in the
crankshaft is not fix position.

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

Inspection/Adjustment

Symptom

Probable Cause

Check ignition timing

Check carburetor jets
for clogging

Check fuel pump for
fuel supply

Correct timing

Incorrect timing

Check valve spring
tension

Fuel flows freely

Fuel flow restricted

Correct

Incorrect

Not clogged

Clogged

Correctly adjusted

Incorrectly adjusted

Not weakened

Weak spring

Check valve timing

Check carburetor pilot
screw adjustment

1. GENERAL INFORMATION

1-22

PEO PLE 125/150

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
batt ery (-) wire to engine

Inspection/Adjustment

Inspection/Adjustment

Symptom

Symptom

Probable Cause

Probable Cause

Normal voltage

Battery has
voltage with
ignition switch

Normal

Voltage does not
increase

Battery has no
voltage with
ignition swit ch

Resistance too

Normal voltage

No voltage

Measure resistance
between AC generator
coil terminals

Normal

Abnormal

Check
regulator/rectifier
coupler for loose

Normal

Abnormal

Connect battery (+)
wire to
regulator/rectifier
coupler green wire and
batt ery (-) wire to engine

Check
regulator/rectifier
coupler for loose

1. GENERAL INFORMATION

1-23

PEO PLE 125/150

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

Inspection/Adjustment

Symptom

Probable Cause

Normal

Normal

Normal

Abnormal

Normal

Abnormal

Abnormal

Measure resistance
between terminals of
CDI unit coupler

Check related parts

Check ignition coil
with the CDI unit

Weak or no spark

Not loose

Good spark

Loose

Normal

Abnormal

Check spark plug cap
and high-tension wire
for looseness

Check CDI unit with
the CDI unit tester