KYMCO People S 250 User manual

17. IGNITION SYSTEM
17-0
PEOPLE/PEOPLE S 250
17
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IGNITION SYSTEM
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IGNITION SYSTEM LAYOUT ------------------------------------------------------------------ 17-1
SERVICE INFORMATION----------------------------------------------------------------------- 17-2
TROUBLESHOOTING --------------------------------------------------------------------------- 17-2
SPARK PLUG -------------------------------------------------------------------------------------- 17-3
IGNITION COIL INSPECTION ----------------------------------------------------------------- 17-3
A.C. GENERATOR INSPECTION------------------------------------------------------------- 17-4
IGNITION UNIT RESISTANCE INSPECTION --------------------------------------------- 17-4
17

17. IGNITION SYSTEM
17-1
PEOPLE/PEOPLE S 250
IGNITION SYSTEM LAYOUT
IGNITION CIRCUIT
Pulser Coil
Ignition Switch
Ignition Coil
Ignition Unit
A
.C. Generato
r
IGNITION UNIT

17. IGNITION SYSTEM
17-2
PEOPLE/PEOPLE S 250
SERVICE INFORMATION
GENERAL INSTRUCTIONS
•Check the ignition system according to the sequence specified in the Troubleshooting. (Ö1-28)
•The ignition system adopts ignition unit and the ignition timing cannot be adjusted.
•If the timing is incorrect, inspect the ignition unit and A.C. generator and replace any faulty parts.
Inspect the ignition unit with a ignition unit tester
•Loose connector and poor wire connection are the main causes of faulty ignition system. Check
each connector before operation.
•Use of spark plug with improper heat range is the main cause of poor engine performance.
•The inspections in this section are focused on maximum voltage. The inspection of ignition coil
resistance is also described in this section.
•Inspect the ignition switch according to the continuity table specified in page 19-3.
•Inspect the spark plug referring to Section 3.
•Remove the A.C. generator and pulser coil referring to Section 10.
SPECIFICATIONS Item Standard
Spark plug Standard type NGK DPR7EA9
Spark plug gap 0.7mm
Ignition timing “F” mark
Full advance repeatedly
Primary coil 3.6～4.1Ω
Ignition coil resistance (20
℃)Secondary without plug cap 14KΩ
coil with plug cap 19KΩ
Pulser coil resistance (20℃) 105～110Ω
Exciter coil resistance (20℃)1.8～2.1Ω
Ignition coil primary side max. voltage 14V
Pulser coil max. voltage 1.6V
Exciter coil max. voltage 14V
TESTING INSTRUMENT
Electric tester: YF-3501
TROUBLESHOOTING
No spark at plug Engine starts but turns poorly
•Faulty spark plug •Ignition primary circuit
•Poorly connected, broken or shorted wire —Faulty ignition coil
•Faulty ignition switch —Poorly connected wire or connector
•Faulty ignition coil —Poorly contacted ignition switch
•Faulty ignition unit •Ignition secondary circuit
•Faulty A.C. generator —Faulty ignition coil
—Faulty spark plug
—Faulty high-tension wire
—Poorly insulated plug cap
•Improper ignition timing
—Faulty A.C. generator
—Stator not installed properly
—Faulty ignition unit

17. IGNITION SYSTEM
17-3
PEOPLE/PEOPLE S 250
SPARK PLUG
For spark plug inspection and adjustment,
refer to page 3-5.
IGNITION COIL INSPECTION
Remove the seat and met-in box. (Ö2-6)
Remove the ignition coil
IGNITION COIL CONTINUITY TEST
Inspect the continuity of the ignition coil,
primary coil and secondary coil.
Measure the ignition coil resistances at 20℃.
Primary coil 3.6～4.1Ω
Secondary coil
without plug cap 14KΩ
Secondary coil with
plug cap 19KΩ
Electric tester: YF-3501
Ignition Coil
This is a general test. Accurate ignition
coil test must be performed with a
ignition unit tester.
＊
I
g
nition Coil Secondar
y
Coil
Primar
y
Coil
I
g
nition Coil

17. IGNITION SYSTEM
17-4
PEOPLE/PEOPLE S 250
A .C. GENERATOR INSPECTION
EXCITER COIL/PULSER COIL
INSPECTION
Remove the seat and met-in box. (Ö2-6)
Disconnect the A.C. generator connector.
Measure the exciter coil resistance between
the black/white wire terminal and ground.
Black/white～Ground 8.1MΩ
Electric tester: YF-3501
For A.C. generator removal/installation, refer
to pages 10-3 and 10-6.
Disconnect the pulser coil wire coupler.
Measure the pulser coil resistance between
the blue/white and green/white wire terminals.
Blue/Yellow～Green/White 105～110Ω
Electric tester: YF-3501
IGNITION UNIT
RESISTANCE INSPECTION
Measure the resistance between the
terminals.
Replace the ignition unit if the readings are
not within the specifications in the table
below.
This test is performed with the stator
installed in the engine.
＊
Measure the resistance in the XΩrange.
＊
Pulser Coil Wire Cou
p
le
r
I
g
nition Uni
t

17. IGNITION SYSTEM
17-5
PEOPLE/PEOPLE S 250
Unit:Ω
(
-
)
(+) L/Y B/Y G/GR G/W B/W G/B V/R V/B V/G G Y/G
L/Y ∞∞93KΩ∞∞49.3KΩ149KΩ46.1KΩ46.1KΩ∞
B/Y 11MΩ∞11MΩ991Ω∞11MΩ11MΩ11MΩ11MΩ∞
G/GR ∞∞ ∞∞∞∞∞∞∞∞
G/W 93KΩ∞13MΩ∞∞50KΩ150KΩ47KΩ47KΩ∞
B/W 11MΩ984Ω∞11MΩ∞11MΩ11MΩ11MΩ11MΩ18MΩ
G/B ∞∞∞∞∞ ∞∞∞∞∞
V/R 50KΩ∞12MΩ49KΩ∞∞ 99KΩ4KΩ4KΩ∞
V/B 150KΩ∞12MΩ150KΩ∞∞99KΩ103KΩ103KΩ∞
V/G 46KΩ∞12MΩ47KΩ∞∞4KΩ103KΩ0.5Ω∞
G46KΩ∞12MΩ47KΩ∞∞4KΩ103KΩ0.5Ω∞
Y/G ∞∞∞∞∞∞∞∞∞∞
Electric tester: YF-3501
• Due to the semiconductor in circuit, it is
necessary to use a specified tester for
accurate testing. Use of an improper
tester in an improper range may give
false readings.
•In this table, “Needle swings then
returns” indicates that there is a
charging current applied to a condenser.
The needle will then remain at “∞”
unless the condenser is discharged.
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