Harken 7410.11 MKIV Jib Reefing & Furling Manuel d'utilisateur Page 1

Please read these instructions carefully before installing, servicing, or operating the equipment. This manual may be modified without notice. See: ww

Assembly Under-Deck Lead BlockMount lead block so furling line is 90° to hub assembly.Mount thru-deck block. Be sure to angle it toward stanchion le

MKIV Underdeck Unit 0 11UNIT 0Length ChartDimensions Inches mmA Center of Pin to Bottom of TerminalB Bottom of Terminal to Top of Foil.40*10*C

12 MKIV Underdeck Unit 0 Preassembly Short Top FoilIf top foil is shorter than 7" (177.8 mm), use one of the following special techniques to en

MKIV Underdeck Unit 0 13Preassembly Foil Length CheckLine up bottom foil so foil clamp is just above or below center of notches in bottom foil. C

14 MKIV Underdeck Unit 0 Assembly Top FoilDeburr inside edge using rat-tail file.Cut foil to length using hacksaw. Prepare top foil for drilling.Tip

MKIV Underdeck Unit 0 15Assembly Top FoilLay top foil in line with others. Slide stay into top foil and down line of foils or slide each foil up s

16 MKIV Underdeck Unit 0 Assembly Top FoilPlace halves of plastic bushings on stay so hooked part of longer section faces out.Tip: With foil screw h

MKIV Underdeck Unit 0 17Assembly Top Foil/ConnectorsSlip connector on wire, mating hook of plastic bushing with connector.Put a drop of red Loctit

18 MKIV Underdeck Unit 0 Assembly Foils/ConnectorsHold plastic wedge in place with thumb as you insert into foil. Line foil holes with connector scr

MKIV Underdeck Unit 0 19Assembly Foils/ConnectorsUse bushings, connector, wedge, and adhesive in other screw hole and insert into other foil. Use

2 MKIV Underdeck Unit 0 07/14/10Parts DescriptionsSafety Precautions/Parts Descriptionacbdfeg1Hub Assembly a) Bridge Fairlead Assembly b) Ball Spo

20 MKIV Underdeck Unit 0 Continue installing connectors and wedges. Make sure to use adhesive in screw holes.Continue assembly. Use bottom connector

MKIV Underdeck Unit 0 21Loosen foil clamp screws at top of drum assembly.Slide drum assembly onto foils.Tip: Face clamp downward so it clears foil

22 MKIV Underdeck Unit 0 ROD RIGGINGInsert two cotter pins and spread. Clean excess Loctite® from terminal body using special care to ensure that t

MKIV Underdeck Unit 0 23Assembly Attach Turnbuckle/Foil System to BoatThread turnbuckle to stud protruding from foil. Assemble turnbuckle.Note: I

24 MKIV Underdeck Unit 0 Assembly Attach Turnbuckle/Foil System to BoatCheck foil height at top, set and secure using hex key. Top of trim cap shoul

MKIV Underdeck Unit 0 25Tip: Do not remove foil clamp screws to adjust foil. Loosen screws, hold foils and bring clamp away from foils. Adjust and

26 MKIV Underdeck Unit 0 Commissioning Turnbuckle on BoatHave extra cotter pins on hand to replace used ones at base of unit and for turnbuckle. Det

MKIV Underdeck Unit 0 27Check location of turnbuckle. It may be below deck under the hub assembly. If it is inside the torque tube, follow this pro

28 MKIV Underdeck Unit 0 Commissioning Lead Line to CockpitFeed the line through bullseye and into spool. Run down into deadend hole located on the

MKIV Underdeck Unit 0 29Commissioning Halyard: Swivel Height/Lead AnglePendantsIf your sail luff is not long enough to position halyard swivel pro

07/14/10 MKIV Underdeck Unit 0 3Preassembly Sizing Check43869Upper Unit1) Bottom Foil2) Feeder 3) Connector Bushing4) Bottom Connector5) 7' (2

30 MKIV Underdeck Unit 0 Commissioning Halyard: Restrainer/Deflector/TensionHalyard Deflector/Halyard RestrainerTo prevent wraps, jib halyard must p

MKIV Underdeck Unit 0 31Operation Halyards/Headstay TensionBackstay AdjustersBackstay adjusters allow headstay tension to be varied to change sail

32 MKIV Underdeck Unit 0 Furl and ReefTo furl or reef, ease the jib sheets and pull furling line.In very light air, it may be necessary to place som

MKIV Underdeck Unit 0 33ReefA sail may be partially furled before you resume sailing. This is known as reefing.Many sailors find it helpful to plac

34 MKIV Underdeck Unit 0 Inspect1) Unit for signs of chafe, wear, or damage. 2) Turnbuckle below drum or inside torque tube for signs of loosening. C

MKIV Underdeck Unit 0 35Problem Probable Cause SolutionSail will not furl or is difficult to furl.Jib halyard is wrapping around headstay because

36 MKIV Underdeck Unit 0 MKIV Underdeck Unit 0 Parts ListHFG951No. Description Order Part No.Foil Clamp 1 H-42959Socket Head Cap Screw (M4 X 12MM)

7404944HFG642HCP1089HCP138721107301 MKIV Underdeck Unit 0 37MKIV Underdeck Unit 0 Parts ListHFG722947HFG200/HFG201Please read these instructions ca

38 MKIV Underdeck Unit 0 UNIT 0 Deck Drill TemplateBOWSTERNIMPORTANT: If you print this template from a computer file, measure to confirm that templa

4 MKIV Underdeck Unit 0 Hub AssemblyPreassembly PartsBow ShacklesTrim CapPlastic Connector WedgesFeederPrefeederHalyard Swivel5200 AdhesiveInjector2&

Corporate HeadquartersN15W24983 Bluemound Rd, Pewaukee, WI 53072 USATelephone: (262) 691-3320 • Fax: (262) 701-5780Web: www.harken.com • Online Catal

09/17/10 MKIV Underdeck Unit 0 51. Turnbuckle components are not included and must be purchased separately.2. Rod rigging requires Harken rod ada

6 MKIV Underdeck Unit 0 Preassembly Dimensions/Sailmaker's InstructionsLuff LengthNote offsets above and below sail.A shorter luff may be requi

07/14/10 MKIV Underdeck Unit 0 7Preassembly Rigging Options — TurnbuckleThe stay runs up the center of the MKIV Unit 0 Underdeck furler. It does no

8 MKIV Underdeck Unit 0 1. Swage stud at end of wire.2. Open end of wire and install Norseman or Sta-Lok® stud after foil is assembled.3. Rod adap

MKIV Underdeck Unit 0 9Assembly Deck Plate Carefully locate center point in deck to locate deck plate. Line from mast to underdeck chainplate must