J/70 Owner Guide
Page
© Copyright 2013, J Boats, Inc. All Rights Reserved
16
Rigging Your J/70
Tools & Supplies
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Phillips head screwdriver
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Flat head screwdriver
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Adjustable wrench
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Portable Drill with ¾” dia. long socket
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Needle nose pliers
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Knife/scissors
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Black rigging tape
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White rigging tape
Before Stepping the Mast
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Set mast up on two padded saw horses
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Install spreaders to spreader brackets.
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Install an optional Windex to top of mast.
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Attach backstay to masthead crane.
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Assemble top of headstay by attaching loose Harken swivel to T-‐bar fitting and top of wire
headstay. Be sure to double check that the Harken swivel end with split ring is at top of the
swivel (reference Appendix C: Jan 15, 2013 J/70 Technical Bulletin).
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Measure the headstay length. We recommend a starting length of 8432mm from the bearing
point of the Gibb fitting at the top of the assembled headstay (with upper swivel in place) to the
pin centerline of the bottom turnbuckle. Consult your sailmaker for more specific
recommendations.
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Install headstay.
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Install all side shrouds.
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Be sure that the five black rubber plugs are inserted into the shroud-‐to-‐mast terminals so that
the shrouds and headstay don’t pop out or become mis-‐aligned during stepping operations.
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Tie and tape a piece of shock chord to the port side lower shroud, approx. 1-‐2’ below the
spreader, then pass it in front of the mast and securely tie and tape to the other lower shroud.
This shock cord helps “prevent” the spinnaker from catching and tearing (during the hoist) into
the triangle created by the mast and the lower shroud (at the spreader).
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Install upper shrouds into spreader end retaining fittings.
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Tape spreader ends and all exposed pins.
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Add contrasting tape calibration marks on spreaders (per sailmaker recommendation) for visual
gauge of jib leech location.
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Install three halyards using the pre-‐fed messenger lines.
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Tie stopper knots in the lower ends of all halyard tails.
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Remove vang lug bolt and lug and store in safe place.
