IGNITION
90-828631R3 MARCH 1999 Page 2A-15
Engine Occasionally Misfires Charge Coil
(CDI) Unit
Ignition Coil/High Tension Lead(s)
Spark Plug Cap(s) 5k Ω Resistor
Spark Plug(s)
Ground Connection at:
a - ignition coil
b - (CDI) unit
c - stator
High Resistance To Ground at:
a - stop/lanyard switch (water/corrosion)
1-2
1-3
2
2
3
2
2
2
2
Engine Surges Over 5700 RPM While
Under Load
Note: The engine (CDI) unit will retard
timing and reduce RPM above 5700
RPM.
Boat Under Propped
Propeller Hub Spun
4
4
Testing Ignition Components
Resistance Tests
When performing resistance tests, all component leads must be disconnected. Readings
may very slightly due to temperature changes. Reading listed taken at 68° (20° C).
TRIGGER COIL TEST
12
VOLTS
DC AMPS
OHMS
0
2
4
6
8
10
DCV
ACV
DVA
0
0
5
10
20
10
30
15
40
20
0
5
10
15
20
30
40
60
100
200
1
2
METER TEST LEADS METER SCALE OHMS READING
RED BLACK
1 2
RX1 396 - 594
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