Harken 7411.11 1/2 MKIV Jib Reefing & Furling - Manual (Page 12)

Assembly Underdeck Lead Block
Mount lead block so that line exits furler
at 90° to line of headstay as shown.
Remember block will split angle and raise
up slightly under load. Mount thru-deck
block. You may want to angle it toward
stanchion block.
Mount thru-deck block. You may want to
angle it toward stanchion lead block.
12 MKIV Underdeck Unit 1, 2, 3
90°