HYOSUNG GV250 Ei User manual

SERVICE MANUAL
99000-95620
SERVICE MANUAL
S&T Motors Co., Ltd.

NOTE
󳢯󳢯
『』 model :
󳢯󳢯
『』 model :
FOREWORD
This manual contains an introductory description on
HYOSUNG 『』 & 『』 and
procedures for its inspection / service and overhaul
of its main components.
It covers the differences from Carbure type and
please refer to the service manual of 『
(99000 - 95310) 』 , 『 &
(99000HR8310) 』 and 『&
(99000 - 94710) 』 for others which are not covered in
this manual.
Other information considered as generally known is
not included.
Read GENERAL INFORMATION section to
familiarize yourself with outline of the vehicle and
MAINTENANCE and other sections to use as a guide
for proper inspection and service.
This manual will help you know the vehicle better so
that you can assure your customers of your optimum
and quick service.
ELECTRICAL SYSTEM
GROUP INDEX
GENERAL INFORMATION 1
EI SYSTEM DIAGNOSIS
FUEL SYSTEM AND THROTTLE BODY
4-2
4-1
5
SERVICING INFORMATION 7
󳣍󳣍This manual has been prepared on the basis
of the latest specification at the time of
publication.
If modification has been made since then,
difference may exist between the content of
this manual and the actual vehicle.
󳣍󳣍Illustrations in this manual are used to show
the basic principles of operation and work
procedures.
They may not represent the actual vehicle
exactly in detail.
WARNING
This manual is intended for those who have
enough knowledge and skills for servicing
HYOSUNG vehicles. Without such knowledge and
skills, you should not attempt servicing by relying
on this manual only.
Instead, please contact your nearby authorized
HYOSUNG motorcycle dealer.
󳟈COPYRIGHT S&T Motors Co., Ltd.

2
HOW TO USE THIS MANUAL
TO LOCATE WHAT YOU ARE
LOOKING FOR :
1. The text of this manual is divided into sections.
2. As the title of these sections are listed on the previous
page as GROUP INDEX, select the section where you are
looking for.
3. Holding the manual as shown at the right will allow you to
find the first page of the section easily.
4. On the first page of each section, its contents are listed.
Find the item and page you need.
SYMBOL
Listed in the table below are the symbols indicating instructions and other information necessary for servicing.
The meaning of each symbol is also included in the table.
Apply THREAD LOCK“1324”.
Apply or use brake fluid.
Measure in voltage range.
Measure in resistance range.
Measure in current range.
Use special tool.
Measure in continuity test range.
Measure in diode test range.
Torque control required.
Data beside it indicates specified torque.
Apply oil.
Use engine oil unless otherwise specified.
Apply SUPER GREASE“A”.
Apply SILICONE GREASE.
Apply MOLY PASTE.
Apply BOND“1215”.
Use fork oil.
DEFINITION
SYMBOL DEFINITIONSYMBOL
Apply SUPER GREASE“C”.

3
A
ABDC : After Bottom Dead Center
AC : Alternating Current
API : American Petroleum Institute
ATDC : After Top Dead Center
B
BBDC : Before Bottom Dead Center
BDC : Bettom Dead Center
BTDC : Before Top Dead Center
D
DC : Direct Current
DOHC : Double Over Head Camshaft
E
ECU : Engine Control Unit,
EI Control Unit
EI : Electric fuel Injection,
Electric fuel Injector
ET Sensor : Engine Temperature Sensor
(ETS)
F
FP : Fuel Pump
G
GP Switch : Gear Position Switch
I
IAP Sensor : Intake Air Pressure Sensor
(IAPS)
IAT Sensor : Intake Air Temperature Sensor
(IATS)
IG : Ignition
ISC Solenoid : Idle Speed Control Solenoid
L
LCD : Liquid Crystal Display
LED : Light Emitting Diode
LH : Left Hand
M
Max : Maximum
Min : Minimum
O
O2Sensor : Oxygen Sensor (O2S)
R
RH : Right Hand
RO Switch : Roll Over Switch
S
SAE : Society of Automotive Engineers
SAV Solenoid : Secondary Air Valve Solenoid
T
TDC : Top Dead Center
TP Sensor : Throttle Position Sensor (TPS)
ABBREVIATIONS USED IN THIS MANUAL

4
BL : Black with Blue tracer BBr : Black with Brown tracer
BG : Black with Green tracer BO : Black with Orange tracer
BR : Black with Red tracer BW : Black with White tracer
BY : Black with Yellow tracer LB : Blue with Black tracer
LG : Blue with Green tracer LR : Blue with Red tracer
LW : Blue with White tracer LY : Blue with Yellow tracer
BrB : Brown with Black tracer BrW : Brown with White tracer
GB : Green with Black tracer GR : Green with Red tracer
GY : Green with Yellow tracer GrB : Gray with Black tracer
GrR : Gray with Red tracer GrW : Gray with White tracer
OB : Orange with Black tracer OL : Orange with Blue tracer
OG : Orange with Green tracer OR : Orange with Red tracer
OW : Orange with White tracer OY : Orange with Yellow tracer
RB : Red with Black tracer RW : Red with White tracer
WB : White with Black tracer WL : White with Blue tracer
WR : White with Red tracer YB : Yellow with Black tracer
YL : Yellow with Blue tracer YG : Yellow with Green tracer
YR : Yellow with Red tracer
B : Black Gr : Gray Sb : Light blue
L : Blue Lg : Light green W : White
Br : Brown O : Orange Y : Yellow
G : Green R : Red
WIRE COLOR

5
GENERAL INFORMATION
EXTERIOR PHOTOGRAPH ………………………………………………………… 6 (1-6-1)
EXTERIOR ILLUSTRATION
~~₩₩
……………………………… 8 (1-6-3)
EXTERIOR ILLUSTRATION
~~₩₩
…………………………… 9 (1-7-1)
EXTERIOR ILLUSTRATION
~~₩₩
………………………………… 10 (1-7-2)
FUNCTION OF EI SENSOR ………………………………………………………… 11 (1-8-1)
SPECIFICATIONS ……………………………………………………………………… 12 (1-8-2)
CONTENTS 1

6
1-6-1 GENERAL INFORMATION
EXTERIOR PHOTOGRAPH

7
GENERAL INFORMATION 1-6-2
EXTERIOR PHOTOGRAPH

8
1-6-3 GENERAL INFORMATION
EXTERIOR ILLUSTRATION
~~₩₩
Rear
reflector Brake / Tail lamp
Rear turn signal lamp
License plate lamp
Front turn signal lamp
Passenger footrests
Head lamp
(HEIGHT)
(WHEEL BASE)
(LENGTH)
(WIDTH)

9
GENERAL INFORMATION 1-7-1
EXTERIOR ILLUSTRATION
~~₩₩
Rear
reflector
Brake / Tail lamp
License plate lamp
Rear turn signal lamp
Front turn signal lamp
Passenger footrests
Head lamp
(HEIGHT)
(WHEEL BASE)
(LENGTH)
(WIDTH)