HALYARD WRAPS
The most serious problem with furling systems occurs
when the jib halyard wraps around the headstay foil.
Halyard wraps will prevent furling or unfurling and may
cause serious damage to the unit and the halyard. In
severe cases, halyard wraps may cause headstay loss.
To prevent wraps, the halyard must exert a slight pull to
the rear. This allows the foils to turn while the halyard
remains stationary.
8 - 10°
PREVENT WRAPS
WARNING: The sail must be fitted to the foils before
operation.
1 Halyard swivel should be within the top
4" (100 mm) of the foil.
2 Halyard must pull slightly to the rear (8 - 10°).
3 Halyard must be snug, but not too tight.
If a halyard wraps, do not force the unit to turn. Attempt
to open the sail by alternately furling in and out slightly.
If the sail can be unfurled, lower the sail by releasing the
jib halyard. Severe halyard wraps can only be cleared by
going aloft and freeing the halyard.
If the sail will not furl or unfurl, it may be possible to
remove the jib sheets and manually wrap the sail around
the headstay.
Remember: Testing at the dock does not indicate the
halyard angle is correct. In wave action, the halyard may
wrap if the lead angle is not correct. The 8-10° diverging
angle mentioned above is critical.
TIP: With the sail raised, walk away from the boat and look
at the masthead with binoculars. Use the halyard swivel
as a measurement reference. 4” (100 mm) is
1
/
3
the length
of the swivel. There should be less foil exposed above the
swivel than
1
/
3
of the swivel.
Commissioning
Halyard Wrap
4/18/07
Nautor MKIV Furling
19
