1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 132Get this manual
Battery Specifications- For each motor, provide one battery that is: 12-volt, group 29, heavy-duty, designated "marine" Ventedrefillable or maintenance-free Rated 675 CCA (845 MCA) or 107 amp-hr Deep-cycle batteries are suitable IF they meet or exceed the minimum CCA requirements JtX
Installing and Connecting Batteries and Cables
Place the battery so it is easily accessible for frequent checking and recharging and in hold-down systemInstall positive cable to positive post and negative cable to negative post
on the clamp adapter with starwasher
If you have "marine" battery posts, install each main cable below itInstall all accessory wires on the threaded portion of the post
If you have "automotive" battery posts, place starwasher on the clamp adapter first, then the main cableand then the accessory wires
INotel DO NOT use wing nuts on battery connections even ifthey were supplied with the batteryWing nuts can loosen and cause errant warning horn signals or electrical system damageApply OIVIC Electrical Grease to connections