Harken 7410.10 MKIV Jib Reefing & Furling - Manual (Page 3)

MKIV Unit 0 3
2. Harken does not recommend drilling boat’s chainplate or toggle. In some cases bushings are available
to fit boats with smaller clevis pin sizes.
3. Will drum fit on bow? See page 6. If necessary, use an additional toggle to slightly raise unit.
Sizing Check
Unit Part No. Description Wire Sizes
7410.10 MKIV Unit 0
5/32", 3/16", 7/32" 4 mm, 5 mm, 6 mm
Rod Sizes
-4, -6 4.37 mm, 5.03 mm
Toggle Part No. Description Chainplate Clevis Pin Size
7410.20 5/16 Eye/jaw reversible 5/16" 7.9 mm
7410.20 3/8 Eye/jaw reversible 3/8" 9.5 mm
7410.20 7/16 Eye/jaw reversible 7/16" 11.1 mm
Chainplate Clevis Pin
Preassembly Sizing Check
10
11
12
13
14 15
9
16
Size Check
1. Check headstay and clevis pin dimensions in chart below.
WARNING! Do not drill boat's chainplate or toggle. This may result in rig failure. Use the correct
size toggle and clevis pin.
Online Product Registration
www.harken.com/FurlingWarranty