Harken 7411.11 1/2 MKIV Jib Reefing & Furling - Manual (Page 34)

Slide torque tube assembly onto foil and clamp just
below top of feeder gap as shown. Use halyard to lift
foil assembly.
Commissioning Turnbuckle on Boat
Adjust turnbuckle
Check to make sure there is a 1/16"–1/8" (2–4 mm)
gap between deck flange and tack swivel. If necessary
loosen adjusting nut below and take up on turnbuckle to
increase gap between deck flange and tack swivel when
the turnbuckle is tightened.
Reassemble Torque Tube Assembly to Hub Assembly.
Do not use Loctite ® on screws.
Tip: If it is hard to capture posts in cap, push against
stay to help align universal. If necessary loosen
backstay.
Lift foils so top is 1/2"–3/8" (12 mm–16 mm) below
upper terminal.
Slide foil clamp into foil notches and tighten screws
to secure.
Check to make sure
there is a 1 / 16 " - 1 / 8 "
(2 - 4mm) gap
34 MKIV Underdeck Unit 1, 2, 3
CAUTION! Foils can drop suddenly causing injury
to hands. Make sure drum assembly and foils are
securely lifted using a halyard before adjusting
turnbuckle.