Ignition System - Honda CX500 1978 Shop Manual

'82 ADDENDUM
HONDA
CXSOO
6. IGNITION SYSTEM
ENGINE IGNITION
STOP SWITCH SWITCH FUSE
IGNITION COIL
,
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d J -
DIODE
SPARK PLUO
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=
1 L-.(
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E
6-
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DIODE
SPARK PLUG
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SERVICE INFORMATION
GENERAL INSTRUCTION
Atransistorized ignition system is used and no adjustments are to be made unless the pulse generator screws are loosened or
the pulse generator is removed.
SPECIFICATIONS
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I
1
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Pulse generator air gap
1
0.40-0.70 mm (0.01 6-0.028 in)
I
ITEM
TROUBLESHOOTING
SPECIFICATION
DR8ES-L (NGK) or X24ESR-U (ND)
-
DR8ES (NGK) or X27ESR-U (NO)
0.6-0.7 mm (0.024-0.028 in)
15' BTDCl1.100
f
1 0 0 rpm
40'
f
1.5" BTDCl2.780 rprn
Spark plug
Spark plug gap
lgnltion timing
Ignition coil 3-point spark test
Engine cranks but will not start
-
Engine stop switch OFF.
-
No spark at plugs
-
Faulty transistorized spark unit
-
Faulty pulse generator
-
Standard
For extended high-speed riding
" F mark
Full advance
6 mm (114 in) minimum
No spark at plug
-
Engine stop switch OFF
-
Poorly connected, broken or shorted wires
Between ignition switch and engine stop switch
Between spark unit and engine stop switch
Between spark unit and ignition coil
Between ignition coil and plug
Between spark unit and pulse generator
-
Faulty ignition coil
-
Faulty ignition switch
-
Faulty spark unit
-
Faulty pulse generator
Engine starts but runs poorly
-
Ignition primary circuit
Faulty ignition coil
Loose or bare wire
Intermittent short circuit
-
Secondary circuit
Faulty plug
Faulty high tension cord
Timing advance incorrect
-
Centrifugal advancer faulty