1. Manuals
  2. Brands
  3. Harken Manuals
  4. Marine Equipment
  5. 7411.11 1/2.BLACK MKIV
  6. Installation manual

Harken 7411.11 1/2.BLACK MKIV Installation Manual

Underdeck jib reefing & furling unit 1, 2, 3
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
MKIV UNDERDECK JIB REEFING & FURLING
Installation Manual - Intended for specialized personnel or expert users
Please read these instructions carefully before installing, servicing, or operating the equipment.
This manual may be modified without notice. See: www.harken.com/manuals for updated versions.
Unit 1, 2, 3
Hub Assembly
Troubleshooting/Warranty
PLEASE SAVE THESE INSTRUCTIONS
Stay Length Deductions/Stay Into Foil Options 8
Short Top Foil (Unit 1)
Short Top Foil (Unit 2)
Short Top Foil (Unit 3)
Rod Rigging
Attach Turnbuckle/Foils to Boat
Halyard Swivel Height/Angle
Clean/Lubricate/Inspect
Confirm Deck Flange/Tack Swivel Gap
Replace Line
Remove Furler
4656 v1 08/21
4-5
6
7
9
10-11
11
12
13
14
15
16
17
18
19
20-26
26
27
28
29-31
32
33-34
35
36
37
38
39-40
40
41
42
42
42
42
42

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 7411.11 1/2.BLACK MKIV and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Harken 7411.11 1/2.BLACK MKIV

Summary of Contents for Harken 7411.11 1/2.BLACK MKIV

  • Page 1: Table Of Contents

    Clean/Lubricate/Inspect Confirm Deck Flange/Tack Swivel Gap Replace Line Storage/Transporting Remove Furler Troubleshooting/Warranty Please read these instructions carefully before installing, servicing, or operating the equipment. This manual may be modified without notice. See: www.harken.com/manuals for updated versions. PLEASE SAVE THESE INSTRUCTIONS...
  • Page 2 The user must have appropriate training in order to use this product. Harken accepts no responsibility for damage or harm caused by not observing the safety requirements and instructions in this manual. See limited warranty, general warnings, and instructions in www.harken.com/manuals.
  • Page 3 Furler Requires Drained Compartment Harken’s Underdeck Furler is designed to keep much of the water from entering the bow compartment. Water will drip through the furler during rain or when sailing in heavy weather. Furling compartment must drain.

  • Page 4: Unit 2

    Preassembly Parts 2' (610 mm) 7' (2.13 m) Foils Bottom Foil Silver foils available Halyard Swivel Cover Assembly Flange Assembly Guard Assembly Line (Not included with Furler) Torque Tube Note: Line is not included with furler. Drum of unit is smaller to allow it to fit Assembly into narrow bow sections.
  • Page 5 Preassembly Parts Connector Bushings Trim Cap Screws Foil Screws Plastic Connector Bow Shackles Wedges Trim Cap Feeder Bottom Connectors Hex Keys Connector Prefeeder Hex Keys (Supplied) Description Unit 2.5, 4, 5 mm 1 Each 5200 3, 4, 5, 6 mm 1 Each Adhesive 3, 4, 6, 10 mm...

  • Page 6: Rigging Parts Check/Tools

    See page 8. Stud Required (Sold Separately) 2. Rod rigging requires Harken rod adapter stud. MKIV Furlers are shipped with 3M 5200 3. Order Harken Lead Blocks and one additional adhesive. Use adhesives on dry connectors and foils using the special injection system 7403 if necessary.

  • Page 7: Dimensions/Sailmaker's Instructions

    Preassembly Dimensions/Sailmaker's Instructions Luff Length Note offsets above and below sail. A shorter luff may be required if a halyard restrainer is necessary (page 37) or a toggle or long toggle assembly is used to raise drum. If luff of sail is not long enough to put halyard swivel near top of headstay foil, a pendant must be added.
  • Page 8 Preassembly Deduction for Stay Length/Stay Into Foil Options Use dimensions of Harken toggle below to build stay to correct length. Tip: Turnbuckles should be 1/2 to 2/3rds open to allow shortening for new wire stretch and for fine-tuning mast rake.

  • Page 9: Deck Flange

    Assembly Deck Flange ° ° – If deck does not fall within these angles, Note: Deck flange angle Carefully locate center point in deck to shims must be made using structural matches a stay angle of locate deck flange. Line from mast to adhesive to avoid excessive pressure °...

  • Page 10: Install Hub Assembly In Bow

    Assembly Install Hub Assembly in Bow Slide hub assembly into deck Adjust length so toggle is lined up with chainplate hole. Slide pin flange. Turn adjusting nut to into chainplate and secure with cotter pin. lengthen or shorten threaded stud as needed. Stud Length Turn Adjusting Nut Shorten...

  • Page 11: Assemble Drum Components

    Assembly Assemble Drum Components Place halves of plastic flange in Use blue Loctite on flathead Tighten screws using hex key ® lower groove on hub assembly screws (provided). (provided). so smooth side of flange is up. Tip: Line up flats in flange with flats in groove.

  • Page 12: Underdeck Lead Block

    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.

  • Page 13: Preassembly

    Preassembly Unit 1—Top Foil Length Make sure upper Alternate measurement points Measure A and add to this chart Measurement and length chart below of A and pin-to-pin Point Inches are the same. TOP FOIL LENGTH WORKSHEET 15.25 Total A+B+E+F Pin-to-Pin Length Subtract ABEF –...

  • Page 14: Top Foil Length (Unit 2)

    Preassembly Unit 2—Top Foil Length Make sure upper Alternate measurement points Measure A and add to this chart Measurement and length chart below of A and pin-to-pin Point Inches are the same. TOP FOIL LENGTH WORKSHEET 18.45 Total A+B+E+F Pin-to-Pin Length Subtract ABEF –...

  • Page 15: Top Foil Length (Unit 3)

    Preassembly Unit 3—Top Foil Length Make sure upper Alternate measurement points Measure A and add to this chart Measurement and length chart below of A and pin-to-pin Point Inches are the same. TOP FOIL LENGTH WORKSHEET 23.4 Total A+B+E+F Pin-to-Pin Length Subtract ABEF –...
  • Page 16 Preassembly Unit 1—Short Top Foil If top foil is shorter than 7" (177.8 mm), use one of the following special techniques to ensure sufficient bearing surface for the foil in the area of the halyard swivel. Cut-Offs Do Not Use 7"...
  • Page 17 Preassembly Unit 2—Short Top Foil If top foil is shorter than 8 " (221 mm), use one of the following special techniques to ensure sufficient bearing surface for the foil in the area of the halyard swivel. Cut-Offs Do Not Use "...
  • Page 18 Preassembly Unit 3—Short Top Foil If top foil is shorter than 9 " (248 mm), use one of the following special techniques to ensure sufficient bearing surface for the foil in the area of the halyard swivel. Cut-Offs Do Not Use "...

  • Page 19: Confirm Foil Length

    Preassembly Confirm Foil Length Confirm foil length by laying foils along- side stay with turnbuckle components Jaw/Jaw Toggle Pin to Bottom of and torque tube assembly. Pull stay out Unit Torque Tube Assembly " (12.7 mm) " (11 mm) straight. Line up turnbuckle eye with a "(15,9 mm) "...
  • Page 20 Assembly Top Foil Cut foil to length using hacksaw. Deburr inside edge using rat-tail file. Prepare top foil for drilling. Tip: Mark top foil to distinguish from cutoff piece. Scribe line on top of foil to mark drill holes. Lay top foil alongside cutoff piece and use a flat metal object (i.e.
  • Page 21 Assembly Top Foil Cut out template at right. Line template up with top of foil and scribed line. Tape in Unit 1 place. Use a center punch to mark holes. Check center punch marks to confirm they from top of foil (see chart below). Unit Center Punch Marks "...
  • Page 22 Assembly Top Foil Install trim cap. Place each side over wire. Push trim cap into foil to start, then tap in using hammer. Install trim cap screws. Place halves of plastic bushings on stay so hooked part of longer section faces out. Tip: With foil screw holes up as shown below, place longer half of bushing with hook on upper half.
  • Page 23 Assembly Top Foil/Connectors Slip connector on wire, mating hook of plastic bushing with connector. Put a drop of red Loctite into screw holes. ® MKIV Underdeck Unit 1, 2, 3...

  • Page 24: Assembly Foils/Connectors

    Assembly Foils/Connectors Hold plastic wedge in place with thumb as you insert into foil. Line foil holes with connector screw holes. Loading Injector with Adhesive Tip: In cooler weather, keep sealed adhesive in pocket to keep warm. Use instructions below to fill injector less than half way;...
  • Page 25 Assembly Foils/Connectors Inject only a small amount of adhesive into middle hole. See chart below for amount. Tip: When you see a small amount of adhesive enter one of the screw holes, stop. You have applied enough adhesive. Use “ml” marks to Unit Adhesive (ml)

  • Page 26: Halyard Swivel

    Assembly Bottom Foil/Connectors/Halyard Swivel Continue installing connectors and wedges. Make sure to use red Loctite in screw ® holes. Red Loctite ® Continue assembly. Use bottom connector to assemble bottom foil. Slide halyard swivel onto foil above feeder window. Make sure taller “half” is up as shown.

  • Page 27: Torque Tube Assembly

    Assembly Torque Tube Assembly Loosen foil clamp screws at top of drum assembly. Slide drum assembly onto foils. Tip: Face clamp downward so it clears foil notches during installation. Temporarily clamp torque tube assembly to top of bottom foil, leaving feeder gap partially exposed as shown at right.
  • Page 28 Assembly Rod Rigging: Rod Adapter Stud Apply a few drops of red Loctite to threads of ® nosepiece. Screw main threaded stud portion onto bronze nosepiece until flats align with two cotter pin holes in terminal body. Tip: Turn nosepiece completely into threaded stud portion.
  • Page 29 Assembly Attach Turnbuckle/Foil System to Boat Thread turnbuckle and threaded eye to stud protruding from foil. Assemble turnbuckle. Note: If using Sta-Lok or Norseman ® ® stud, you must use a washer above stud as shown below. Washer Taking care not to lose parts, remove bearing caps from drum assembly.
  • Page 30 Assembly Attach Turnbuckle/Foil System to Boat Carefully Raise foil and stay up onto boat. Raise foils using line attached to feeder gap as shown. Attach eye to jaw/jaw toggle deck level using clevis pin. Adjust turnbuckle. Secure with cotter pin. Secure with cotter pin.
  • Page 31 Assembly Attach Turnbuckle/Foil System to Boat Check to make sure there is a "– " (2–4 mm) gap between the 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 turnbuckle is tightened.

  • Page 32: Feeder/Final

    Assembly Feeder/Final Tip: Do not remove foil clamp screws to adjust foil. Loosen screws, hold foils and bring clamp away from foils. Adjust and reclamp. Slide halyard swivel above feeder. Place feeder in foil Tighten screw. recess. Push screw down so tab catches under foil. Note: Screw will turn with some difficulty.

  • Page 33: Commissioning

    Commissioning Turnbuckle on Boat Have extra cotter pins on hand to replace used ones at base of unit and for turnbuckle. Hold foils and loosen torque tube screws until you can pull clamp part way out in order to lower foils. Lower foils.

  • Page 34: Turnbuckle

    Commissioning Turnbuckle on Boat Slide torque tube assembly onto foil and clamp just below top of feeder gap as shown. Use halyard to lift foil assembly. CAUTION! Foils can drop suddenly causing injury to hands. Make sure drum assembly and foils are Adjust turnbuckle securely lifted using a halyard before adjusting turnbuckle.

  • Page 35: Lead Line To Cockpit

    Commissioning Lead Line to Cockpit Run line through enclosed window in guard and into hole in bottom plate of spool. Tie a small overhand knot and pull it up under drum assembly. WARNING! Lead line through enclosed window. If line is led through opening between two enclosed windows it can ride above lineguard and jam furler which can cause loss of control of boat.
  • Page 36 Commissioning Halyard: Swivel Height/Lead Angle Halyard Wrap The most serious problem with furling systems occurs when the jib halyard wraps around the headstay foil. Halyard wraps will keep you from furling or unfurling and may cause serious damage to the unit and the halyard. WARNING! In severe cases, a halyard wrap can cause loss of control of boat and/or headstay can break suddenly.

  • Page 37: Halyard Restrainer/Tension

    If your boat needs a Halyard Deflector, use Part No. 7302 or a Halyard Restrainer, use Harken Part No. 944. Restrainer should be mounted as high as possible on face of mast. Position restrainer so that foils will not hit it when under load.

  • Page 38: Operation

    They permit a very tight headstay to be eased when boat is not in use. For best performance, consider adding a backstay adjuster; either a block and tackle, a mechanical adjuster like those offered by Harken, or a hydraulic adjuster. Remember to keep headstay tight for best performance when furling or reefing.

  • Page 39: Raise Sails/Storm Sails/Reefing

    Operation Raise Sail/Storm Sail/Reef Raise Sails 1) Install prefeeder by securely tying end of line to a deck fitting or to toggle below furler so it is 2' (610 mm) below feeder. 2) Shackle tack of sail to tack shackle. Install shackle so screw pin head is on same side as sun cover.

  • Page 40: Secure Sail

    Operation Reef/Secure Sail Reef A sail may be partially furled before you resume sailing. This is known as reefing. Many sailors find it helpful to place marks on foot of sail so that they can reef to a variety of predetermined jib sizes.

  • Page 41: Race Conversion

    Operation Race Conversion Remove Feeder Race conversion allows use of both grooves for sail changes and tacking genoas on deck for use of maximum luff length genoas. Halyard Swivel Below Feeder Use halyard to lift halyard swivel up, away from feeder. Loosen screw one revolution only.

  • Page 42: Maintenance

    Maintenance Clean/Inspect/Remove Furler Clean and Lubricate Keep unit clean. When you wash boat, flush unit with soap and fresh water. Occasionally lower sail and flush halyard swivel with soap and fresh water. At least twice a year unit should be cleaned more thoroughly by removing line (first note direction of spool) and flushing bearings with soap and fresh water.
  • Page 43 Torlon ® is a registered trademark of Solvay Advanced Polymers Loctite is a trademark of Henkel AG & Company KGaA ® Warranty: www.harken.com/manuals or call, write, email, or fax Harken, Inc., Pewaukee, WI USA MKIV Underdeck Unit 1, 2, 3...
  • Page 44 MKIV Underdeck Unit 1 Parts List Description Order Part No. HFS980 Top Cover Assembly w/Screws HFG683 Top Cover H-38817 H-38817 Top Cover Screw (M4 x .7 x 10MM) HFS980 Bottom Flange Assembly w/Screws HFG684 Flange H-38818 HFS980 Bottom Flange Screw (M4 x .7 x 10MM) HFS980 Guard Assembly HFG685...
  • Page 45 Troubleshooting/Warranty 57 mm Carbo Ratchet Assembly 7402 Please read these instructions carefully before installing, servicing, or operating the equipment. This manual may be modified without notice. See: www.harken.com/manuals for updated versions. PLEASE SAVE THESE INSTRUCTIONS 7404 40 mm Carbo Assembly...
  • Page 46 MKIV Underdeck Unit 2 Parts List Description Order Part No. HFS980 Top Cover Assembly w/Screws HFG686 Top Cover H-35665D H-35665D Top Cover Screw (M4 x .7 x 10MM) HFS980 Bottom Flange Assembly w/Screws HFG687 Flange H-35600C HFS980 Bottom Flange Screw (M4 x .7 x 10MM) HFS980 H-35600C Guard Assembly...
  • Page 47 7404 57 mm Carbo Ratchet Assembly 7402 Please read these instructions carefully before installing, servicing, or operating the equipment. This manual may be modified without notice. See: www.harken.com/manuals for updated versions. PLEASE SAVE THESE INSTRUCTIONS 40 mm Carbo Assembly 7401...
  • Page 48 MKIV Underdeck Unit 3 Parts List Description Order Part No. HFS1060 Top Cover Assembly w/Screws HFG689 Top Cover H-35025D H-35025D Top Cover Screw (M5 x .8 x 12MM) HFS1060 Bottom Flange Assembly w/Screws HFG690 Flange H-35465C HFS1060 Bottom Flange Screw (M5 x .8 x 12MM) HFS1060 H-35465C Guard Assembly...
  • Page 49 57 mm Carbo Ratchet Assembly 7402 Unit 1, 2, 3 WARNING!: Strictly follow all instructions to avoid an accident, damage to your vessel, personal injury or death. See www.harken.com 7404 for additional safety information. 40 mm Carbo Assembly 7401 Horn Cleat...
  • Page 50 This Page Intentionally Left Blank...
  • Page 51 UNIT 1 — Deck Drill Template IMPORTANT! If you print this template from a computer file, measure to confirm that template is the correct size before drilling. Deck Flange Diameter 3.7" (94mm) 2.362" (60 mm) Hole Saw Size " (95mm) UNIT 1 4.694"...
  • Page 52 This Page Intentionally Left Blank...
  • Page 53 UNIT 2 — Deck Drill Template IMPORTANT! If you print this template from a computer file, measure to confirm that template is the correct size before drilling. Deck Flange Diameter 4.2" (106.5 mm) 2.678" (68 mm) Hole Saw Size " (110 mm) UNIT 2 5.28"...
  • Page 54 This Page Intentionally Left Blank...
  • Page 55 UNIT 3 (3/4, 7/8) — Deck Drill Template IMPORTANT! If you print this template from a computer file, measure to confirm that template is the correct size before drilling. Deck Flange Diameter 5.45" (138.5 mm) 3.444" (87.5 mm) Hole Saw Size "...
  • Page 56 Main Office and Harken Brandstore: Västmannagatan 81B SE-113 26 Stockholm Sweden Telephone: (46) 0303 61875 • Fax: (46) 0303 61876 Mailing address: Harken Sweden AB, Box 64, SE -440 30 Marstrand Web: harken.se • Email: harken@harken.se Harken UK, Ltd. Bearing House, Ampress Lane, Lymington, Hampshire S041 8LW, England Telephone: (44) 01590-689122 •...

This manual is also suitable for:

7412.11 5/8.black mkiv7413.11 3/4.black mkiv7413.11 7/8.black mkiv

Table of Contents