Unit 4, Preassembly unit 4—short top foil, No special treatment required – Harken 7413.10 MKIV Jib Reefing & Furling built after Feb. 2009 User Manual
Page 12: Do not use plastic bushing above top connector, Under 38 mm (1
12
MKIV Unit 4
Preassembly
Unit 4—Short Top Foil
If top foil is shorter than 260 mm (10
1
/
4
"), use one of the following special techniques to ensure sufficient bearing
surface for the foil in the area of the halyard swivel.
102 mm (4")
89 mm (3
1
/
2
")
76 mm (3")
64 mm (2
1
/
2
")
51 mm (2")
38 mm (1
1
/
2
")
260 mm (10
1
/
4
") No special treatment required.
260 mm (10
1
/
4
")
258 – 192 mm (10
1
/
8
" – 7
9
/
16
") Do not use plastic bushing above
top connector.
258 – 192 mm (10 1/8" – 7
9
/
16
")
190 – 168 mm (7
1
/
2
" – 6
5
/
8
") Do not use plastic bushing above
top connector. Shorten top of connector and if necessary shorten
trim cap.
190 – 168 mm (7
1
/
2
" - 6
5
/
8
")
165 – 111 mm (6
1
/
2
" – 4
3
/
8
") Do not use plastic bushing above
top connector. Cut connector right at cross formed by glue
dispersion channels. Use single foil screw in top foil only.
165–111 mm (16
1
/
2
"–4
3
/
8
")
Under 38 mm (1
1
/
2
") Eliminate top foil and run foil higher in
drum assembly.
Under 38 mm (1
1
/
2
")
Top Foil
Length
from
Worksheet
1. Initial
top foil
cut length
2. Cut through
middle hole in
top foil.*
3. Shorten
full length
adjoining
foil by
cutting
through
middle
hole.*
4. Shorten
connector
5. Shorten
trim cap
Resulting Top
Foil Length
Length
4"
(102 mm)
9
3
/
32
"
(231 mm)
6
17
/
32
"
(166 mm)
5
11
/
32
"
(136 mm)
No
3
1
/
2
"
(89 mm)
8
19
/
32
"
(218 mm)
6
1
/
32
"
(153 mm)
5
11
/
32
"
(136 mm)
No
3"
(76 mm)
8
3
/
32
"
(205 mm)
5
17
/
32
"
(140 mm)
5
11
/
32
"
(136 mm)
No
2
1
/
2
"
(64 mm)
7
19
/
32
"
(193 mm)
5
1
/
32
"
(128 mm)
5
11
/
32
"
(136 mm)
No
2"
(51 mm)
7
3
/
32
"
(180 mm)
4
17
/
32
"
(115 mm)
5
5
/
32
"
(131 mm)
No
1
1
/
2
"
(51 mm)
6
9
/
16
"
(167 mm)
4
1
/
32
"
(103 mm)
4
1
/
2
"
(114 mm)
Yes
102 – 38 mm (4" – 1
1
/
2
") Shorten top foil and adjoining full length
foil so two screws are used to assemble joint instead of four. Do not
use plastic bushings above top connector.
*To allow for saw cut, position blade so upper half of middle hole
is preserved.
Cut-Offs – Do Not Use.
Cut-Offs –
Do Not Use.
Cut-Offs –
Do Not Use.
Cut-offs –
Do not use.
Cut-Off
Do Not Use
UNIT 4