1980 Johnson 4HP Service Manual, Page 36Get this manual
prevent possibIe arcing high votage, position the tester eads at east inches(50 meta sur'ace,
A,SAFETY WARNING The shock from this ignition system is severe and do serious physical harmavoid possibIe shock hazards do not handle ignition coil or tester leads during this testerank the engine and observe the results at the spark tester
-r 1Four wire connector 2Three wire connector
Figure 4-14Connectors
SENSOR eOIL TEST Separate the four wire connector between the armature plate and power packSee Figure 414Insert jumper wire to terminal in the armature plate end of the connectorSee Figure 4-15Insert jumper wire to terminal in the armature plate end of the connectorSee Figure 4-1593012
Figure 4-13Spark Test
If spark jumps at both gaps, alternately the ignition system is eheck the spark plugsand other engine systems If there is spark, continue the troubIeshooting procedure