1996 Johnson Evinrude "ED" Electric Outboards Service Manual, P/N 507119, Page 28Get this manual
General Safety Warnings
To prevent possible eye injury, always wear SAFETY GLASSES while servicing the unitReplace any locking fastener (locknut or patch screw) if its locking feature becomes weakQefinite resistance to turning must be felt when reusing locking fastenerIf replacement is indicated, use only authorized replacement or equivalentTo prevent possible damage, make sure all wiring is properly routed and clamped in its original position away from rotating motor componentsDo not charge battery in the boat with battery charger that has clamp-on charger leadsFumes vented during charging are very flammable and can cause an explosion from spark when the clamps are removedBefore working on or removing any electrical parts, disconnect the battery cables from battery to prevent electrical sparks