1969 Evinrude 40 HP Big Twin, Big Twin Electric Lark Service Manual 4596, Page 87Get this manual
DESCRIPTION The 40 HP Electric Start Model electrical systems consist of ignition system, starter system, storage battery, and electric cables and switchesThe 40 HP electric shift model also includes generator charging system and operator's remote controlsSee Figures 7-1 and 7-2This section will cover the starter system, battery maintenance, and the charging systemElectrical components covered in other sections of this manual include the following: Ignition system Electric shift Remote controls Section Section Section 8
BATTERY SPECIFICATIONS
For best performance, we recommend 12-volt, 60 amper hour battery, or better, with minimum of minutes cold starting capacity at 300 amperes dischargezero degrees Fahrenheit, and 10 second voltage reading of 7.5 volts
TROUBLESHOOTING THE ELECTRICAL SYSTEM Trouble in the electrical system often is first evidenced by failure of the starter to operate, and may be caused by failure of anyone or more of the components covered in this sectionIf the battery fails to start the motorthe first things to check are the condition of the battery, and electrical connections throughout the circuitA large percentage of electrical circuit as well as component failures are caused by loose or dirty electrical wiring connections, especially in the starter circuitBattery maintenance, and charging system troubleshooting are covered in this sectionStarter system troubleshooting is included in the Trouble Check Chart in Section 2