1974 Johnson 40 HP Outboard Motors Service manual, Page 30Get this manual
DESCRIPTION MAGNETO
The ignition system consists of low tension flywheel type magneto connected to the spark plugs through individual ignition coils and high tension leadsThe magneto is self- contained ele ctrical gener ating unit consisting of an armature plate with one rive coil and lamination assemblytwo condensersand two breaker assembliesThe electric start model includes two alternato coilsTwo permanent magnets cast into the fl ywheel on manual start models and four on electric art models to complete the assemblySee Figur es 4- thru 4- 4
Figure 4-3Armature PlateElectric Start
Fi gure 4-1Armature Plate AssemblyRope Start
Figure 4- 4Flywheel MagnetsElectric Start