Kymco MO Yup50 Service Manual - chap 15 (imp elettrico)

15. ELECTRICAL EQUIPMENT

15-0

YUP 5 0

15

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ELECTRICAL EQUIPMENT

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SERVICE INFORMATION........................................................ 15- 1

TROUBLESHOOTING.............................................................. 15- 1

CHARGING SYSTEM............................................................... 15- 3

BATTERY................................................................................ 15- 4

IGNITION SYSTEM ................................................................. 15- 7

STARTING SYSTEM................................................................ 15-11

15

15. ELECTRICAL EQUIPMENT

15-1

YUP 5 0

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

YUP 50

Capacity

12V3AH

Voltage

13.0_ 13.2V

Charging

Standard

0.4A/5H~10H

Battery

current

Quick

4A/0.5H

Spark plug

(NGK)

BR8HSA

Spark plug gap

0.6_ 0.7mm

Primary coil

0.2_ 0.3Ω

Secondary coil
(with plug cap)

7.0_ 8.4KΩ

Ignition coil resistance

Secondary coil
(without plug cap)

2.5_ 3.2KΩ

Pulser coil resistance (20¢J)

80_ 160Ω

Ignition timing

13.5°±1.5°BTDC/3000rpm

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

15. ELECTRICAL EQUIPMENT

15-2

YUP 5 0

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

15. ELECTRICAL EQUIPMENT

15-3

YUP 5 0

CHARGING SYSTEM

A.C. Generator

Dimmer Switch

Headlight Switch

Resistor

Ignition Switch