1968 Evinrude Starflite 100 HP outboards Service Manual, Page 38Get this manual
cLift distributor cap and rotor from motorAvoid loss of wave washer between distributor cap and rotorSee Figure 4-11dTo remove sensor rotor from crankshaft, use two screw drivers to pry offSee Figure 4-15ePull link out of nylon ball jOintSee Figure 4-16fRemove distributor plate assembly by removing four screws and Clips attaching plate to headSee Figure 4-1NOTE The reverse cutout spring and the clip grounds out the ignition should the motor attempt to run backwardsSee insert Figure 4-16 CLEANING, INSPECTION, AND REPAIR
SPARK PLUGS Inspect plugs for cracked porcelain and excessively worn electrodesThe gap between the center electrode and the rim of the plug is preset and is not adjustableIf center electrode is worn to point where it is below the ceramic, it should be replacedPoor motor performance and premature spark plug failure may result from improper spark plug installationBefore installing the plug, be sure the plug seat in the cylinder head is clean and free from obstructionsSee Figure -17 Install new spark plug gasket, screw the plug in by hand, then tighten to the specified 17-12 to 20-12 foot-pounds