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72 ST4000+ Wheel & Tiller Autopilots: Owner’s Handbook
5 Installing the ST4000+
Note: The wheel drive is designed to work with 3 spoke clamps on
4 or 8 spoke wheels. For cosmetic reasons, however, you may want to
fit an extra spoke clamp to the fourth spoke. Raymarine dealers can
supply an extra spoke clamp (part number A18089).
3. Drill the appropriate spoke clamp holes using the larger of the
supplied drill bits (6.0 mm or
1
/
4
in):
• drill from the inside, placing a piece of scrap wood under the
cover to produce a clean exit hole
• you will need to drill 4 new holes so the cover has 6 holes in
total (2 for each spoke clamp)
Note: The spoke clamps will cover these exit holes, so they will not be
visible when the wheel drive is installed.
D5348-1b
3 or 6 spokes 4 or 8 spokes
Top 2 spoke clamp holes
are pre-drilled
Piece of scrap wood
D5347-1