Harken 7411.11 1/2 MKIV Jib Reefing & Furling - Manual (Page 9)

Assembly Deck Flange
Carefully locate center point in deck to
locate deck flange. Line from mast to
under deck chainplate must intersect this
center point. Mark center fore/aft and
athwartships line. Use template to mark
four outer holes and center pilot hole.
Make sure closer pair of holes is forward.
If deck does not fall within these angles,
shims must be made using structural
adhesive to avoid excessive pressure
on deck and deck bearings.
72 1 / 2 ° – 74 1 / 2 °
Use 6 mm screws and compound to fasten
deck flange.
Note: There must be a minimum of
3 /
8
"
(9 mm) thread engagement into deck flange.
Note: Deck flange angle
matches a stay angle of
73 1 /
2
° when compared
to deck. Angles can vary
between 72 1 /
2
° and 74 1 /
2
°.
Once you are certain hole is located in
line with chainplate and any required
shimming is done, drill hole 90° to deck.
Make sure hole is just large enough so deck
flange bears against deck. It is better to
make hole slightly smaller and file opening
larger to fit. Use template to mark large hole
and bolt holes. Use hole saw to drill deck.
Tip: After pilot drill bit clears deck, drill final
hole from bottom using pilot hole to line up
hole drilled from top. This will prevent glass
from chipping.
MKIV Underdeck Unit 1, 2, 3 9