Preassembly dimensions/sailmaker's instructions, Luff length, Tack setback – Harken 7413.10 MKIV Jib Reefing & Furling built after Feb. 2009 User Manual
Page 7: Luff tape size -6 (5 mm or, Luff tape length, Tack and head shackles (unit 3 only), Sun cover, Unit 3 only - long link plate
Preassembly
Dimensions/Sailmaker's Instructions
MKIV units 3, 4
7
Luff Length
Note offsets above and below sail.
A shorter luff may be required if a halyard restrainer is necessary (page 31)
or a toggle or long toggle assembly is used to raise the drum.
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 -6 (5 mm or
6
/
32
")
J - Finished luff tape size: 5.5 mm (0.215")
K - Luff rope size: 4.8 mm (
6
/
32
",
3
/
16
")
L - Max Ø in sail groove: 6.5 mm (0.26")
M - Gap in sail groove: 2.4 mm (0.096")
Luff Tape Length
Cut off top of luff tape so it is 450 to 600 mm (18" to 24") below head
of sail. This allows head to lag behind rest of sail to help flatten it.
It will also help the 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 (Unit 3 Only)
Make sure tack and head shackles fit sail
rings. Minimum inside dimensions of
standard head and tack shackles are:
(A) 48 mm (1
7
/
8
")
(B) 21 mm (
13
/
16
")
Sun Cover
Sun covers may be installed on either side of sail. Be sure to match other
sails in the customer's inventory.
Note: If a long link plate is used, add the following dimensions to feeder, shackle and drum
height (based on whether plate is used full-length or shortened to one of five hole positions).
Do not add to halyard swivel or top terminal dimensions.
19.1 mm (
3
/
4
") Clevis Pin
Add 497 mm to 271 mm (19
9
/
16
" to 10
11
/
16
")
22.2 mm (
7
/
8
") Clevis Pin
Add 505 mm to 279 mm (19
7
/
8
" to 11")
Unit 3 only - long link plate
B
A
D
F
G
I
C
H
E
H
A
Unit 4 only
Unit
A
B
C
D
E
F
G
H
I
Max
Min
Max
Min
Max
Min
Max
Min
3*
7
5
/
16
"
11
5
/
8
"
3
3
/
8
"
9
3
/
4
"
4
3
/
4
"
50
7
/
8
"
50
5
/
16
"
18
11
/
16
"
18
1
/
16
"
16
13
/
16
"
16
1
/
2
"
7
11
/
16
"
7
1
/
8
"
186 mm 296 mm 86 mm 247 mm 121 mm 1293 mm1278 mm 474 mm 460 mm 427 mm 413 mm 195 mm 180 mm
4
8
15
/
16
"
—
—
11
1
/
16
"
5
1
/
8
"
53
3
/
4
"
54
7
/
8
"
—
—
20
1
/
4
"
19
1
/
8
"
8
7
/
8
"
7
3
/
4
"
227 mm
280 mm 130 mm 1365 mm1394 mm
515 mm 486 mm 225 mm 196 mm
*See note above regarding long link plates.
A
B
J
K
L
M