Suzuki GS500E (1989-1997) [110/221] Left alternator side right clutch side see chapter 1

Suzuki GS500E (1989-1997) [110/221] Left alternator side right clutch side see chapter 1
Chapter 4
I 9 n ition syste
Contents
General information """"""""""""""""""" 1
Ignition control unit - check, removal and installation. . . . . . . . . . .. 5
Ignition (main) switch - check, removal and installation. .see Chapter 8
Ignition HT coils - check, removal and installation. . . . . . . . . . . . .. 3
Ignition system-check 2
Degrees of difficulty
Easy, suitable fa' ~ FMty easy, suitS)le ~ ~ ~ ~ ~ SlitabIe fa ~ V-v ~ ~
novice witt) ittIe ~ fa' beginre- witt) ~ ~ for ~ ~ exP8'8"ICed 00 ~ ~ fa' expert 00 ~
exper8)Ce ~ some exper81Ce ~ [)Y mechanic ~ mEK:hCI1ic ~ or professional ~
Specifications
General information
Cylinder identification. . . . . . . . . .
Sparkplugs Ignition timing
At idle
California models
All other models
Full advance
Pulse generator coils
Resistance
Ignition HT coils
1 General information
All models are fitted with a fully
transistorlsed electronic ignition system.
which due to its lack of mechanical parts is
totally maintenance free. The system
comprises a rotor, pulse generator coils,
ignition control unit and ignition HT coils (refer
to the wiring diagrams at the end of Chapter 8
for details).
The trigger on the rotor. which is fitted to
the right-hand end of the crankshaft,
magnetically operates the pulse generator
coils as the crankshaft rotates. The pulse
generator coils send a signal to the ignition
control unit which then supplies the ignition
HT coils with the power necessary to produce
a spark at the plugs.
4-1
m
Ignition timing - general information and check. . . . . . . . . . . . . . .. 6
Neutral switch - check and replacement. . . . . . . . . . . . .see Chapter 8
Pulse generator coil assembly - check, removal and installation. .. 4
Sidestand switch - check and replacement. . . . . . . . . . .see Chapter 8
Spark plug gap check and replacement. . . . . . . . . . . . .see Chapter 1
Left (alternator side), Right (clutch side)
See Chapter 1
50 BTDC
1~ BTDC
400 BTDC 0 4(XX) rpm
250 to 420 ohms
3.0 to 6.0 ohms
18 to 30 K ohms
17 to 23 Nm
The system uses two coils mounted on
each side of the frame behind the steering
head. The right-hand coil supplies the right
cylinder spark plug and the left-hand coil
supplies the left cylinder plug.
The ignition control unit incorporates an
electronic advance system controlled by
signals genel'ated by the rotor and the pick-up
coil.
The system incorporates a safety intet1ock
circuit which will cut the ignition if the
sidestand is put down whilst the engine is
running and in gear, or if a gear is selected
whilst the engine is running and the sidestand
is down.
Because of their nature, the individual
ignition system components can be checked
but not repaired. If ignition system troubles
occur, and the faulty component can be
isolated, the only cure for the problem is to
replace the part with a new one. Keep in mind
that most electrical parts. once purchased.
cannot be returned. To avoid unnecessary
expense. make very sure the faulty
component has been positively identified
before buying a replacement part.
4
2 Ignition system - check
&. Warning: The energy levels in
, electronic systems can be very
. high. On no account should the
ignition be switched on whilst
the plugs or plug caps are being held.
Shocks from the HT circuit can be most
unpleasant. Secondly, it is vital that the
engine is not turned over or run with either
of the plug caps removed, and that the
plugs are soundly earthed (grounded)

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