Harken 7410.10 MKIV Jib Reefing & Furling - Manual (Page 6)

Preassembly Dimensions/Sailmaker's Instructions
6 MKIV Unit 0
luff length
Note offsets above and below the sail.
A shorter luff may be required if a halyard restrainer is necessary
(page 26) or a toggle or long toggle assembly is used to raise drum.
If the luff of sail is not long enough to put the halyard swivel near the
top of the headstay foil, a pendant must be added (see page 26).
Tack Setback
Note setback for the tack shackle and cut the sail accordingly.
luff Tape Size
Unit 0 requires #6 ( 6 /
32
" or 5 mm) luff tape.
luff Tape length
Cut off top of luff tape so it is 18" to 24" (450 to 600 mm) below head of
sail. This allows head to lag behind rest of sail to help flatten sail. It will
also help head to roll more smoothly.
Note feeder height and extend the bottom of the luff tape downwards so
it is below the feeder. This will prevent the luff tape from catching in the
feeder as the sail is lowered.
Tack and Head Shackles
Make sure tack and head shackles fit the
sail rings. The minimum inside dimensions
of the standard head and tack shackles are:
(A) 1 1 /
16
" (27 mm)
(B) 1 /
2
" (13 mm)
Sun Cover
Sun cover may be installed on either side of the sail. However,
make sure you match other sails in the customer's inventory.
A
b
Max
41"
(1041 mm)
Min
39 1 / 4 "
(997 mm)
Max
8 3 / 8 "
(213 mm)
Min
8"
(203 mm)
3 3 / 4 "
(96 mm)
Max 2 5 / 16 " (59 mm)
Min 2" (51 mm)
6 1 / 4 "
(158 mm)
5 1 / 2 "
(140mm)
1 7 / 8 "
(47 mm)