2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 189Get this manual
MIDSECTION STERN BRACKETS, STEERING ARM, AND SWIVEL BRACKET IMPORTANT: An insulation washer must be installed between the bonding wire terminal and the exhaust housingAttach the bonding wire to the exhaust housingTighten the screw securely STERN BRACKETS, STEERING ARM, AND SWIVEL BRACKET
Removal
Remove the exhaust housing and the oil panRefer to "EXHAUST HOUSING AND OIL PAN" on page 181Remove the screws and the bonding wires from the stern bracket and the lower mount bracket