IGNITION
90-826883 R2 JUNE 1998 Page 2A-15
Ignition Troubleshooting
Electronic Spark Advance
WARNING
DANGER -- HIGH VOLTAGE/SHOCK HAZARD! Do not touch ignition components and/or
metal test probes while engine is running and/or being “cranked”. STAY CLEAR OF
SPARK PLUG LEADS. To assure personal safety, each individual spark plug lead should
be grounded to engine.
WARNING
When testing or servicing the ignition system, high voltage is present. DO NOT TOUCH
OR DISCONNECT any ignition parts while engine is running, while key switch is on.
Tool: Multimeter/DVA Tester 91-99750A1
Component
Test
Selector
Sw.
Position
DVA Lead
Red
DVA Lead
Black
Voltage
Reading
(1)
@300-3000
RPM
Voltage
Reading
@ 3000-4000
RPM
Test 1
Coil
Primary
400 DVA*
Coil (+)
Terminal
Coil (--)
Terminal
160-250 (1) 200-280
Test 2
Sw. Box -
Stop Circuit
400 DVA*
Black/Yellow
Sw. Box Terminal
Ground 220-320 300-350
Test 3
Stator -
Low Speed
400 DVA*
Blue Sw. (2)
Box Terminal
Ground 220-320 300-350
Test 4
Stator -
High Speed
400 DVA*
Red Sw. (2)
Box Terminal
Ground 30-220 200-280
*If using a meterthat requires a DVA adapter, place selectorswitch tothe 400 VDC posi-
tion.
(1)Readings may vary at cranking speed or at idle.
(2)Back probe the electrical connector in order to make connection.
Multimeter Ohm Checks
Tested Part Multimeter
Wires
Connected To: Meter Scale Meter Reading
RED
BLACK
RED
BLACK
R x 1 W 100 - 180
Test 5 Stator
RED
BLACK
BLUE
BLACK
R x 100 W 29 - 35
RED
BLACK
RED
BLUE
R x 100 W 28 - 34
Test 6 Trigger
RED
BLACK
BROWN/WHITE
BROWN/YEL-
LOW
R x 100 W 6.5 - 8.5
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