1968 Evinrude Speedifour, Starflite 85HP Service Manual, Page 31Get this manual
DESCRIPTION new breaker point capacitor discharge (C.D ignition system, which is standard equipment 1968 85 engines, consists of three major electronic componentsThese new ignition two sets of breaker points, and an assemamplifier assembly is completely sealed and is attached to bracket the lower motor cover
THEORY OF OPERATION
transistorized voltage converter changes the 12volt battery supply to 350 volts and stores it in the energy storage See Figure 4-1breaker point circuit, opened the action of the distributor (see Figure 4-2), supplies signal to the amplifierAn electronic switch then ates; allowing the storage capacitor to discharge into the ignition ignition boosts the 350 volts to the 25000 volts available at the spark plugsAs the crankshaft rotates, the breaker points close, allowing the transistorized converter to recharge the storage capacitorMECHANISM reverse cut-off spring, located the crankshaft above the breaker point base, is driven against the nylon oiler wick retainer when the engine is running normaHy