Ignition System Specifications; Ignition System Troubleshooting; Ignition System Service Information; Ignition System Tools - Honda TRX70 Fourtrax 1986 Service Manual

14. IGNITION SYSTEM
SERVICE INFORMATION
TROUBLESHOOTING
IGNITION COIL
ALTERNATOR EXCITER COIL
CDiUNIT
SERVICE INFORMATION
GENERAL
14-1
14-1
14-2
14-3
14-3
PULSE GENERATOR
IGNITION TIMING
IGNITION SWITCH IAfter '86)
ENGINE STOP SWITCH
NEUTRAL SWITCH
14-4
14-4
14-5
14-5
14-6
• Ignition timing does not normally need to be adjusted since the COl (Capacitive Discharge Ignition) unit is factory preset.
• For spark plug inspection, refer to page 3· 6 .
• For stator removal refer to section 9.
• The following color codes are indicated throughout this section and on the w iring diagram.
Bu
=
Blue G
=
Green Lg
=
Light Green R ... Red
Sf
=
Black Gr
:z
Grey
a ""
Orange W
;z
White
ST = Brown Lb
=<
light Blue P "" Pink Y
=
Yellow
SPECIFICA nONS
ITEM STANDARD
Spark plug
I
NGK CR7HS (CR6HS, CR8HS)
I
NO
U22FSR·U (U2OFSR-U, U24FSR-Ul
Spark plug gap
0."
0 .7 mm 10.024 - 0 .0 2 8
in)
Ignnion timing
25°:t: 2° BTDest 1,700% 100 rpm
Ignition coil
I
Primary coil resistance
0 . 1 - 0 .2
Q
(at 20
o
e.
68° F)
Secondary coil rel hj;Ulnce (Without 15~rt.
plug cap) 3.69 - 4 .51 kD (et 20
0
e , 68°F)
Exciter coil resistance
Pulse genefetO!' resiSUlnce
TOOLS
Inspection adaptor Ie 1)
Spark adaptor
Digital multitester or
Circuit tester (SANWAJ or
Circuit tester (KOWA)
T~OUBLESHOOTI
NG
Engine
.tarts but stope
• Improper ignition timing
• Faulty spark plug
No
spark 8t
ptug
Faulty ignition switch (After ' 86)
Engine stop switch " OFF"
'64
6960 let 20 0 e , 68 ° F)
80- 1200 let 20
0
e , 68°F)
07508-0012500 (Not available in U.S.A .)
07GGK - 0010loo (Not available in U.S.A .)
07411-0020000 or KS-AHM -32-OO3 (U.S.A . only)
07308-0020000
TH-SH-1
Engine
.tarts but runs poorty
Ignition primary circuit
- Faulty ignition coil
- Loose o r poorly contacted terminals
- Faulty altemator eKciter coil
- Faulty COl unit
Poorly connected , broken or shorted wires
- Between alternator and COl unit
- Faulty pulse generator
Ignition secondary circuit
- Faulty plug or plug wire - Between COl unit and engine stop switch
- Between COl unit and ignition coil - Loose or poorly contacted spark plug wire
- Between ignition coil and spark plug
- Between pulse generator and COl unit
- Between COl unit and neutral switch
Faulty ignition coil
Faulty COl unit
Faulty pulse generator
Faulty alternator eKciter coil
• Faulty neutral switch
Improper ignition timing
- Faulty pulse generator
- Faulty COl unit
14-1