Tools required
InstallationTools requiredTools required

Power drill
Hole cutter suitable for 68 mm (2 43/64 inch) external isolator plate boss(1)
Masking / adhesive tape
Water based anti-fouling paint
Drill bit suitable for 15 mm (19/32 inch) external isolator sleeve boss)(1)
13 mm (½ inch) wrench (spanner) or suitable size adjustable wrench (spanner)
Drill bit (suitable for pilot holes)
Paint brush (for application of anti-fouling paint)
Half round file
Large adjustable wrench (spanner) suitable for hull nut 68 mm (2 ¾ inch)
Marine grade sealant
(1) It is recommended that you cut holes the same size as the stated values and then, if necessary, carefully file the hole to allow parts to be fitted correctly.
If a hole cutter / drill bit of the specified size(s) is not available, use a slightly smaller size and then carefully file the hole to the correct size. Alternatively, for larger holes, you could use a jigsaw to cut the hole and then carefully file the edge to create a circle the required size.