Preassembly dimensions/sailmaker's instructions – Harken 7412.13 12V MKIV Electric Jib Reefing & Furling User Manual
Page 7
Preassembly
Dimensions/Sailmaker's Instructions
MKIV Unit 2E, 3E
7
Luff Length
Note offsets above and below sail.
A shorter luff may be required if a halyard restrainer is used or an
additional toggle assembly is used to raise unit.
If luff of sail is not long enough to put halyard swivel near top of
headstay foil, a pendant must be added. See page 29.
Tack Setback
Note setback for tack shackle and cut sail accordingly.
Luff Tape Size
Unit 2E and 3E require #6 (
6
/
32
" or 5mm) 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 bottom of luff tape downward so it is
below feeder. This will prevent luff tape from catching in feeder as
sail is lowered.
Tack and Head Shackles
Make sure tack and head shackles fit sail
rings. Minimum inside dimensions of
standard head and tack shackles are:
A
B
B
A
E
C
F
G
H
D
Unit
A
B
2E
1
3
/
4
" (44 mm)
11
/
16
" (17 mm)
3E
1
7
/
8
" (48 mm)
13
/
16
" (21 mm)
Sun cover
Sun covers may be installed on either side of sail. Be
sure to match other sails in the customer's inventory.
Part
No.
A
B
C
D
E
F
G
H
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
7412.13 with 7312.22 5/8 toggle
5
3
/
8
143
9
1
/
8
231
3
1
/
4
82
33
1
/
16
841
24
1
/
2
622
22
5
/
8
574
4
1
/
2
116
8
11
/
32
212
7412.13 with 7413.22 3/4 toggle
5
3
/
8
143
9
1
/
8
231
3
1
/
4
82
33
11
/
19
856
25
3
/
32
637
23
1
/
4
590
5
3
/
16
132
8
11
/
32
212
7413.13 with 7413.22 3/4 toggle
7
5
/
16
186
11
5
/
8
296
3
1
/
4
82
32
1
/
2
826
25
3
/
32
637
23
1
/
4
590
5
3
/
16
132
8
11
/
32
212
7413.13 with 7413.22 7/8 toggle
7
5
/
16
186
11
5
/
8
296
3
1
/
4
82
33
3
/
16
840
25
11
/
16
652
23
13
/
16
605
5
3
/
4
146
8
11
/
32
212
See toggle dimensions in appendix