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16. ELECTRICAL EQUIPMENT
16-0
VITALITY 50
16 __________________________________________________________________________________
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ELECTRICAL EQUIPMENT__________________________________________________________________________________
SERVICE INFORMATION........................................................ 16- 1
TROUBLESHOOTING.............................................................. 16- 1
CHARGING SYSTEM............................................................... 16- 3
BATTERY................................................................................ 16- 5
IGNITION SYSTEM ................................................................. 16-11
ELECTRIC STARTER .............................................................. 16-17
16
16. ELECTRICAL EQUIPMENT
16-1
VITALITY 50
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• It is not necessary to check the battery electrolyte or fill with distilled water.• Remove the battery from the motorcycle for charging. Do not remove the electrolyte cap..• Do not quick charge the battery. Quick charging should only be done in an emergency..• Charge the battery according to the charging current and time specified on the battery.• When charging, check the voltage (open voltage) with an electric tester.• When replacing the battery, do not use a traditional battery.
SPECIFICATIONS 2-Stroke 4-Stroke
Capacity 12V3AH 12V4AH
Voltage 13.0_ 13.2V 13.0_ 13.2V
Charging Standard 0.4A/5H~10H 0.5A/5H~10HBattery
current Quick 4A/0.5H 4A/0.5H
Spark plug (NGK) BR8HSA C7HSA
Spark plug gap 0.6_ 0.7mm 0.6_ 0.7mm
Primary coil 0.153_ 0.187Ω 0.5ΩSecondary coil(with plug cap) 6.99k_ 10.21KΩ 8.12KΩIgnition coil resistanceSecondary coil(without plug cap) 3.24k_ 3.96KΩ 3KΩ
Pulser coil resistance (20¢J) 80_ 160Ω 118.1_ 118.2Ω
Ignition timing 13.5°±2°BTDC/3000rpm 28°±2°BTDC/4000rpm
TROUBLESHOOTING
CHARGING SYSTEM
No power Intermittent power• Dead battery • Loose battery cable connection• Disconnected battery cable • Loose charging system connection• Fuse burned out • Loose connection or short circuit in ignition system• Faulty ignition switch • Loose connection or short circuit in lighting system
Low power Charging system failure• Weak battery • Loose, broken or shorted wire or connector• Loose battery connection • Faulty regulator/rectifier• Charging system failure • Faulty A.C. generator• Faulty regulator/rectifier
16. ELECTRICAL EQUIPMENT
16-2
VITALITY 50
IGNITION SYSTEM
No spark at plug Engine starts but turns poorly• Faulty spark plug • Ignition primary circuit• Poorly connected, broken or shorted wire —Faulty ignition coil
—Between A.C. generator and CDI unit —Poorly connected wire or connector—Between CDI unit and ignition coil • Ignition secondary circuit—Between CDI unit and ignition switch —Faulty ignition coil—Between ignition coil and spark plug —Faulty spark plug
• Faulty ignition switch —Poorly insulated plug cap• Faulty ignition coil • Improper ignition timing• Faulty CDI unit —Battery voltage too low (6V max.)• Faulty A.C. generator —Faulty CDI unit
STARTING SYSTEM
Starter motor won‘t turn Lack of power• Fuse burned out • Weak battery• Weak battery • Loose wire or connection• Faulty ignition switch • Foreign matter stuck in starter motor• Faulty starter switch or pinion
• Faulty front or rear stop switch Starter motor rotates but engine does• Faulty starter relay not start• Poorly connected, broken or shorted wire • Faulty starter pinion• Faulty starter motor • Starter motor rotates reversely
• Faulty starter clutch• Weak battery
16. ELECTRICAL EQUIPMENT
16-3
VITALITY 50
CHARGING SYSTEM(2-STROKE)
A.C. Generator
Regulator/Rectifier
Resistor
Fuse 7ABattery (+) Cable
Battery (-) Cable
Light Switch
Resistor5.9Ω/30W
16. ELECTRICAL EQUIPMENT
16-4
VITALITY 50
CHARGING SYSTEM(4-STROKE)
A.C. Generator
Regulator/Rectifier
Resistor
Fuse 7ABattery (+) Cable
Battery (-) Cable
Light Switch
Resistor7.5Ω/30W
16. ELECTRICAL EQUIPMENT
16-5
VITALITY 50
BATTERYBATTERY REMOVAL1. Make sure the ignition switch is OFF.2. Remove the screw (1).3. Push the two retainer clips (2) and
remove the battery cover (3)
4. Disconnect the negative (-) terminal lead(1) from the battery first, thendisconnect the positive (+) terminal lead(2).
5. Remove the battery.
• This model adopts the batterywhich needs no refilling of distilledwater.• When cleaning the terminals,
remove the screws attaching thebattery cover on the footboard andthen open the battery cover.• When battery terminals are
corroded, take out the battery forcleaning.• After cleaning, apply a thin coat
of grease or vaseline to batteryterminals and then install the battery.
°Ø
• Never open the closed-type battery electrolyte cap.• If the scooter will not be used for a long time, the battery will discharge electricity by itself.
Remove the battery and put it in a cool place after it is fully charged to prevent electricity leakage.• If the scooter will not be used for a long time, remove the negative (-) terminal.• Do not smoke or allow flames or sparks near the battery while removing and installing it.• Turn off the ignition switch before removal or installation. The negative (-) terminal shall be
removed first and the positive (+) terminal shall be installed first.• Tighten the loose terminal nuts securely.
°Ø
16. ELECTRICAL EQUIPMENT
16-6
VITALITY 50
BATTERY INSPECTIONRemove the battery cover and disconnectthe battery cables.Measure the voltage (20°C/68°F) betweenthe battery terminals.Fully charged : 13.0V_ 13.2VUndercharged : 12.3V max.
CHARGING METHODConnect the charger positive (+) cable tothe battery positive (+) cable.Connect the charger negative (-) cable to thebattery negative (-) cable.
Charging current : Standard : 0.4AQuick : 4A
Charging time : Standard : 5 ~10hoursQuick : 0.5 hour
After charging: Open circuit voltage: 12.8V min.
RedBlack
•Quick charging should only be done inan emergency.
•During quick charging, the batterytemperature should not exceed 45¢J .
•Measure the voltage 30 minutes afterthe battery is charged.
°Ø
• Keep flames and sparks awayfrom a charging battery.• Turn power ON/OFF at the
charger, not at the battery terminals toprevent sparks near the battery.• Charge the battery according to
the current specified on the batterysurface.
°Ø
16. ELECTRICAL EQUIPMENT
16-7
VITALITY 50
CURRENTD LEAKAGE TESTTurn the ignition switch “OFF”.Remove the battery cover.Disconnect the negative (-) cable from thebattery.Connect the ammeter (+) probe to thenegative (-) cable and the ammeter (-) probeto the battery (-) terminal.With the ignition switch “OFF”, check forcurrent leakage.
Specified current leakage: 1mA maximum
If current leakage exceeds the specifiedvalue, a shorted circuit is likely.Locate the short by disconnectingconnections one by one and measuring thecurrent.
• When measuring current using atester, set it to high range, and thenbring the range down to an appropriatelevel. Current flow higher than therange selected may blow out the fuse inthe tester.• While measuring current, do not
turn the ignition switch “ON”. Asudden surge of current may blow outthe fuse in the tester.
°Ø
16. ELECTRICAL EQUIPMENT
16-8
VITALITY 50
CHARGING VOLTAGE INSPECTION
Start the engine and warm it up to operatingtemperature; stop the engine.Connect the multimeter between thepositive and negative terminals of thebattery.
With the headlight on high beam, restart theengine.
Measure the voltage on the multimeter whenthe engine runs at 8000 rpm
Charging Limit Voltage: 14.5±0.5V/8000rpmIf the limit voltage is not within thespecified range, check the regulator/rectifier.
A.C. GENERATOR (CHARGING COIL)INSPECTION
Remove the met-in box and center cover.(13-5)
Disconnect the A.C. generator connector.Measure the resistances between thecharging coil terminals (white– ground) andlighting coil terminals (yellow–ground).Resistance (2-Stroke):
Charging coil white– ground 0.2_ 1.2ΩLighting coil yellow– ground 0.3_ 1.0Ω
Refer to 8 section for A.C. generatorremoval.
A.C. Generator Connector
Make sure the battery is in goodcondition before performing this test.
°Ø
To prevent a short, make absolutelycertain which are the positive andnegative terminals or cable.
°Ø
Inspect with the engine installed.°Ø
16. ELECTRICAL EQUIPMENT
16-9
VITALITY 50
Resistance (4-Stroke):
Charging coil white– ground 0.9ΩLighting coil yellow– ground 0.7Ω
Refer to 8 section for A.C. generatorremoval.
RESISTOR INSPECTIONRemove the frame front cover. (13-4)
Measure the resistance between the resistorB pink wire and ground.Measure the resistance between the resistorA green/black wire and ground.Resistance (2-Stroke): Resistor A: 9.2_ 11.2Ω Resistor B: 5.3_ 6.5Ω
Resistance (4-Stroke): Resistor A: 7.7_ 8.3Ω Resistor B: 12.0_ 12.8Ω
Resister A
Resister B
A.C. Generator Connector
Faulty resistor is the cause of faultyoperation of the auto bystarter.
°Ø
16. ELECTRICAL EQUIPMENT
16-10
VITALITY 50
REGULATOR/RECTIFIERINSPECTION
Remove the front cover. (13-4)
Disconnect the regulator/rectifier wirecoupler and remove the nut to remove theregulator/rectifier.Measure the resistances between theterminals.Replace the regulator/rectifier if the readingsare not within the specifications in the tablebelow.
2-StrokeProbe⊕
Probe(-) A (R) B (W) C (Y) D (G)
A (R) °€ °€ °€B (W) 3-10KΩ °€ °€C (Y) °€ °€ 33-35KΩ
D (G) °€ °€ 33-35KΩ
4-StrokeProbe⊕
Probe(-) A (R) B (W) C (Y) D (G)
A (R) 3-4MΩ °€ °€B (W) 6-8MΩ °€ °€C (Y) °€ °€ 14-15MΩ
D (G) °€ °€ 14-15MΩ
Coupler
A (Red) C (Yellow)
D (Green)B (White)
Regulator/Rectifier Nut
•Due to the semiconductor in circuit, itis necessary to use a specified testerfor accurate testing. Use of animproper tester in an improper rangemay give false readings.
°Ø
16. ELECTRICAL EQUIPMENT
16-11
VITALITY 50
IGNITION SYSTEM(2-STROKE)
Ignition Coil
Ignition Switch
Spark Plug
A.C. Generator (Exciter Coil)/ Pulser Coil
C.D.I Unit
16. ELECTRICAL EQUIPMENT
16-12
VITALITY 50
IGNITION SYSTEM(4-STROKE)
Ignition Coil
Ignition Switch
Spark Plug
A.C. Generator (Exciter Coil)/ Pulser Coil
C.D.I Unit
16. ELECTRICAL EQUIPMENT
16-13
VITALITY 50
IGNITION COIL INSPECTIONContinuity Test
Remove the met-in box and center cover.(13-5)
Measure the resistance between the ignitioncoil primary coil terminals.Resistance (20¢J):2-Stroke: 0.153_ 0.187Ω4-Stroke: 0.5Ω
Measure the secondary coil resistancebetween the spark plug cap and the primarycoil terminal as Figure A shown.Resistance (20¢J) (with plug cap):2-Stroke: 6.99K_ 10.21KΩ4-Stroke: 8.12KΩ
Measure the secondary coil resistancebetween the ignition coil terminal and theprimary coil terminal as Figure B shown.Resistance (20¢J) (without plug cap):2-Stroke: 3.24K_ 3.96KΩ4-Stroke: 3KΩ
Performance TestRemove the ignition coil.
Ignition Coil
This test is to inspect the continuity ofignition coil.
°Ø
Figure AFigure B
16. ELECTRICAL EQUIPMENT
16-14
VITALITY 50
Inspect the ignition coil with an ignition coiltester.
1. Turn the changeover switch to 12V andconnect the ignition coil to the tester.
2. Turn the power switch ON and check thespark from the watch window.
_Good : Normal and continuous spark_Faulty : Weak or intermittent spark
A.C. GENERATOR
Exciter Coil/Pulser Coil Inspection
Remove the met-in box and center cover.(13-5)
Disconnect the A.C. generator wireconnector.Measure the pulser coil resistance betweenthe blue/yellow wire and ground.Resistance (20¢J):2-Stroke: 80_ 160Ω
Resistance (20¢J):4-Stroke: 118.1_ 118.2Ω
Blue/Yellow
Follow the ignition coil tester manufac-turer‘s instructions.
°Ø
The test is performed at both conditionsthat the ignition coil is cold and hot.
°Ø
This test is performed with the statorinstalled in the engine.
°Ø
Blue/Yellow
16. ELECTRICAL EQUIPMENT
16-15
VITALITY 50
CDI UNIT INSPECTIONRemove the met-in box. (13-5)
Disconnect the CDI coupler and remove theCDI unit.
CDI CIRCUIT INSPECTIONMeasure the resistance between theterminals.Replace the CDI unit if the readings are notwithin the specifications in the table below.
Use the x KΩ range for the Sanwa Tester.Use the x 100Ω range for the Kowa Tester.(2-Stroke) Unit: KΩ
Probe⊕
(-)Probe
Black/Yellow
Black/Red
Black/White
Blue/Yellow Green
Black/Yellow °€ °€ °€ °€
Black/Red °€ 1-10 °€ °€
Black/White °€ °€ °€ °€
Blue/Yellow °€ 3-40 80-120 10-30
Green °€ 2-10 10-30 °€
CDI Unit
Blue/ Yellow Green
Black/ Yellow Black/ Red
Black/White
•Due to the semiconductor in circuit, it isnecessary to use a specified tester foraccurate testing. Use of an impropertester in an improper range may givefalse readings.
•Use a Sanwa Electric Tester or KowaElectric Tester (TH-5H).
• In this table, “Needle swings thenreturns” indicates that there is a chargingcurrent applied to a condenser. The needlewill then remain at “°€ ” unless thecondenser is discharged.
°Ø
16. ELECTRICAL EQUIPMENT
16-16
VITALITY 50
(4-Stroke) Unit: ΩProbe⊕
(-)Probe
Black/Blue
Black/Yellow
Blue/Yellow Green
Black/Blue °€ °€ °€
Black/Yellow
9.2M-9.25M
310K-320K
310K-320K
Blue/Yellow
8.81M-8.85M
310K-320K 1K
Green 8.86M-8.88M
310K-320K 1K
Blue/ Yellow
Green
Black/ Yellow
Black/ Blue
16. ELECTRICAL EQUIPMENT
16-17
VITALITY 50
ELECTRIC STARTER
Starter Motor
Starter Relay
16. ELECTRICAL EQUIPMENT
16-18
VITALITY 50
STARTER RELAY INSPECTION
Remove the met-in box. (13-5)
Disconnect the starter relay coupler andthen remove the starter relay.
Connect the starter relay green/yellowterminal to the 12V battery positive (+)terminal and the relay yellow/red terminalto the battery negative (-) terminal. Checkfor continuity between the starter relay redand red/white terminals. The relay is normalif there is continuity.
AC 110V
Starter Relay
Green/YellowRed/White
Yellow/RedRed
Starter Relay (4-Stroke)
Starter Relay (2-Stroke)
16. ELECTRICAL EQUIPMENT
16-19
VITALITY 50
STARTER MOTOR REMOVAL
Disconnect the starter motor cable.Remove the two bolts attaching the startermotor and remove the starter motor.
The installation sequence is the reverse ofremoval.
Connect the starter motor cable connectorCheck the O-ring for wear or damage andreplace it if necessary.
Apply grease to the O-ring and install thestarter motor.Tighten the two mounting bolts.Torque: 0.8_ 1.2kgf-m
STARTER MOTOR INSPECTION
Connect a battery across the starter motorand check for its operation.
Starter Motor
Bolts
The starter motor cable connector mustbe installed properly.
°Ø
Battery
Starter Motor Battery (+) Terminal
16. ELECTRICAL EQUIPMENT
16-20
VITALITY 50
STARTER PINIONREMOVALRemove the left crankcase cover.Remove the drive pulley.(Refer to chapter 9)
Remove the starter pinion cover (2-stroke).Remove the starter pinion.
INSPECTIONInspect the starter pinion seat for wear.Inspect the starter pinion for smoothoperation.Inspect the starter pinion shaft forcingparts for wear and damage.
INSTALLATIONApply a small amount of grease to thestarter pinion teeth.Install the starter pinion in the reverse orderof removal.
Starter Pinion
Shaft Forcing Parts
Starter Pinion
Starter Pinion Cover (2-Stroke)