1978 Evinrude Outboards 9.9/15HP Service Manual, Page 52Get this manual
12345 Spring terminal Cover (twist and pull) Hook High tension lead Spark plug
Figure 4-45Spark Plug Cover and Terminal
1Engine 2Lockwasher 3Electrical connector
Figure 4-44Lockwasher Positioning INST ALLATION aInstall the power pack ground wire and position the wire so there will be no pull (stretch) when the power pack is installedExcessive pull on the ground wire could result in ignition failureSee Figure 4-43bMount the power pack and tighten the screws to the torque specified in Section 2
1Support clamps 2Mount screws
Figure 4-46Ignition Coil Mounting INSTALLATION aInsert the ignition coil terminal into the three wire connectorbMount the ignition coil to the engine with the lockwasher between the engine block and ground wire connector See Figure 4-44cSecure the high tension lead to the spark plug