Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 31Get this manual
CARBURETOR ADJUSTMENT make the connection it will not be near the batteryAn arc near the battery could cause an explosion, destroying the battery and causing serious personal injuryIf it is necessary to use fast-charger on dead battery, ALWAYS disconnect one of the boat cables from the battery first, to prevent burning out the diodes in the alternatorNEVER use fast charger as booster to start the engine because the diodes in the genera tor will be DAMAGEDGenerator Charging
Normally generating system is not standard equipment on the smaller horsepower engines, up to the 35 hp modelHowever, generator kit may be purchased and installed on the 35 hp and '+0 hp engines for battery charging while the engine is operatingA generator system is standard equipment on the '+0 hp electric shift modelWhen the battery is partially discharged, the ammeter should change from discharge to charge between 1500 to 1800 rpm for all modelsIf the battery is fully-charged, the rpm will be little higherWith the engine running, in gear, in the water, increase the throttle until the rpm is approximately 5200 rpmThe ammeter reading should meet the Alternator Specifications in the AppendixWith fullycharged battery the ammeter reading will be bit lower because of the self-regulating characteristics of the generating systems