1971 Johnson 4HP Outboard Motors Service Manual, Page 38Get this manual
DISASSEMBL POWER HEAD Remove the armature support plate and retaining ringNote of retaining ringSee Figure 5-5
Remove cy1inder head and gasket the six head screwsSee Figure 5-5
removing
Remove exhaust cover and gasket removing the seven cover plate screwsS1ide cover out from under starter bracketSee Figure 5-5