Harken 7413.10 MKIV Jib Reefing & Furling built after Feb. 2009 - Manual (Page 24)

Assembly Unit 3, 4—Attach Toggle/Short Link Plate
24 MKIV units 3, 4
Recess turnbuckle into drum assembly, slip link
plates over special clevis pin, and secure using
fasteners. Use blue Loctite ® adhesive on screws.
Secure to toggle using lock nuts.
Apply isolator.
Loctite is a registered trademark of Henkel AG &
Company KGaA.