Harken 7320.10 ESP Jib Reefing & Furling - Manual (Page 26)

26 ESP Unit 0, 1
Commissioning Check Halyards
Short Luff Length Sail
If sail luff is too short to position the halyard swivel 40–100 mm
from top of foil assembly, you must add a pendant to the head of sail.
Determine Pendant Length
1. Raise sail, but do not attach tack to drum assembly.
2. Position halyard swivel 40–150 mm from top of foil.
3. Secure halyard.
4. Tie a piece of rope between sail tack and tack shackle.
6. Tension sail.
7. Measure distance from tack shackle to sail tack.
Have a rigger make a pendant to this length using plastic-
coated wire It should be permanently attached to head of sail.
Check Halyards
Once sail is raised, stand back from boat and use binoculars to make sure
there is no interference from halyards.
The jib halyard must exert a slight pull to the rear. This allows the foil to
turn while halyard remains stationary.
1. Halyard swivel must be 40 mm (1
1 /
2
") –150 mm (6") from top of foil.
2. Halyard must pull slightly to rear (8°–10°).
Halyard Deflector
If the stay attachment is close to the halyard exit the halyard will
not pull to the rear 8° or more and can catch on the top of the foil.
Use halyard deflector to move the halyard away. Check to make
sure there is enough space between the trim cap and the bottom
of the terminal.
Halyard deflector thickness:
Unit Part Thickness
0 7301 25.5 mm (1")
1 7302 29 mm (1 1 /
8
")
WARNING! In severe cases, a halyard wrap can cause loss
of control of boat and/or headstay can break suddenly. Make
sure halyard is clear of top foil before using system.
8–10°
40–150 mm
Pendant
Head of Sail
40–150 mm
Halyard swivel
is too low
The most serious problem with furling systems occurs when the jib
halyard wraps around the headstay foil. A halyard wrap will keep you
from furling/unfurling and may cause serious damage to the unit and
halyard.
IMPORTANT! A furler with a low halyard swivel may furl correctly in
smooth water/calm conditions, but the halyard will be likely to wrap in
a rough sea.
Halyard swivel
is too low
If halyard wraps, do not force unit to turn. Attempt to open sail by
carefully furling in and out a little at a time. If sail will unfurl, lower it
by releasing jib halyard. If sail will not furl, try to remove one sheet
and run the tied sheet around foil. Use sheet to pull sail around foil
and repeat. This should only be attempted by expert users observing
all safety requirements for going forward.