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Please read these instructions carefully before installing, servicing, or operating the equipment. 

This manual may be modified without notice. See: www.harken.com/en/support/manuals/ for updated versions.

  

PLEASE SAVE THESE INSTRUCTIONS

MKIV OCEAN - JIB REEFING & FURLING

Unit 1

Installation Manual – Intended for specialized personnel or expert users

5390 03/21

Preassembly

 

Safety Precautions/Parts Description 

2

 

Sizing Check 

3

 

Parts 4

 

Rigging Parts Check/Tools 

5

 

Dimensions/Sailmaker's Instructions 

6

 

Toggle Deductions/Stay Into Foil Options 

7

 

Top Foil Length 

8

 

Short Top Foil 

9

 

Confirm Foil Length 

10

Assembly

 

Foils/Connectors 11–14

 

Halyard Swivel and Drum Assembly 

15

 

Rod Rigging 

16

 Turnbuckle/Toggle 

17–18

 Final/Feeder 

19–20

Commissioning

 

Turnbuckle 21

 

Lead Line to Cockpit 

22

 

Halyard Wrap/Prevent Halyard Wrap 

23

 

Pendant/Halyard Restrainer/ Halyard Tension 24

Operation

 Spinnaker 

Halyards/Headstay and Backstay Tension 

25

 

Raise Sails 

26

 Furl/Reef 

26–27

 

Secure Sail 

27

Maintenance

 Clean/Inspect 28
 

Replace Line 

28

 

Storage/Remove Furler 

28

Troubleshooting/Warranty 29

Parts Lists 

30-31

Contact Harken 32

Summary of Contents for MKIV Unit 1

Page 1: ...ls 5 Dimensions Sailmaker s Instructions 6 Toggle Deductions Stay Into Foil Options 7 Top Foil Length 8 Short Top Foil 9 Confirm Foil Length 10 Assembly Foils Connectors 11 14 Halyard Swivel and Drum...

Page 2: ...oats to reduce sail size or to completely roll so wind has little effect on the sail Use of this product for other than normal sailboat applications is not covered by the limited warranty Safety Preca...

Page 3: ...OCEAN Unit 1 1 4 9 32 5 16 6 mm 7 mm 8 mm Rod Sizes 8 10 12 5 72 mm 6 35 mm 7 14 mm Toggle Part No Description Chainplate Clevis Pin Size 7411 20 1 2 Eye jaw reversible 1 2 12 7 mm 7311 20 1 2 Jaw jaw...

Page 4: ...11 33F 2 610 mm Bottom foil Part No Quantity Description 7511 31F 6 7 177 8 mm Connectors HFG1015 1 Connector bushing set Includes 6 H 83382 Bushing connector half top 6 H 83383 Bushing connector half...

Page 5: ...e additional 7403 if necessary Fits 1 25 mm stanchions Preassembly Rigging Parts Check Tools Tools You Will Need Includes 3 x 7403 1 x 7401 1 x 7402 1 Horn Cleat 7404 Lead Block Kit Sold Separately 1...

Page 6: ...shackle and drum height based on whether plate is used full length or shortened to one of five hole positions Do not add to halyard swivel or top terminal dimensions 1 2 12 7 mm Clevis Pin Add 131 4...

Page 7: ...wire stretch and for fine tuning mast rake Long Link Plate w Toggle 1 2 12 7 mm Clevis Pin 5 8 15 9 mm Clevis Pin 25 16 59 mm 211 16 68 mm Stud Jaw 5 8 15 9 mm Clevis Pin Make sure your toggle looks l...

Page 8: ...n 16 4 416 G Crosspin to Clevis Pin Pin to Pin Length After completing worksheet above fill in A C D and G below Add A through G to confirm total equals your pin to pin measurement Length Check G Togg...

Page 9: ...9 38 mm Actual Top Foil 41 2 114 mm Do not cut top foil to length from worksheet Cut top foil to 41 2 114 mm and shorten trim cap by 15 16 24 mm as shown at left Shorten bottom foil per chart below Fo...

Page 10: ...le will fit boat Ideally turnbuckle will be half to two thirds open to allow for rig adjustment Line up drum assembly so holes below drum line up with holes in Harken toggle Make sure toggle is tensio...

Page 11: ...sing rat tail file Drill two 1 8 3 mm holes in foil for self tapping screws Mark the location of the trim cap screws at the cut end of the top foil Location 1 2 12 7 mm down from top of foil and 3 8 9...

Page 12: ...r faster assembly Over a marine eye located on the bottom of the stay From the top if lower terminal is part of turnbuckle Check fit of marine eye before proceeding This will generally work with small...

Page 13: ...used Red Loctite Halyard Deflector Put a drop of red Loctite in screw holes Place connector on wire with hooked side up Red Loctite in screw holes Hooked side of connector Use a hex key wrench to secu...

Page 14: ...ector and mating with four recesses in bottom part of bushing Put a drop of red Loctite into screw holes Red Loctite in screw holes Slide foil completely over bushings and connector Use a hex key wren...

Page 15: ...MKIV Ocean Unit 1 15 Assembly Halyard Swivel Drum Assembly Slide halyard swivel onto foil IMPORTANT Make sure up arrow is up Slide drum assembly onto foil...

Page 16: ...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 complete...

Page 17: ...nd attach Harken toggle Note If using Sta Lok or Norseman stud you must use a washer above stud as shown below Stud Jaw Toggle Assembly Eye Jaw Toggle Assembly Make sure shallow jaw is up Turnbuckle C...

Page 18: ...cknuts Determine height of link plates to provide anchor clearance and cut to length Cut at scribe mark Deburr edges Connect eye to toggle jaw using special clevis pin Secure using cotter pin Toggle F...

Page 19: ...Clevis Pin Slide lower drum assembly over turnbuckle and attach using long crosspin Use plastic washers provided WARNING Crosspin must be 90 degrees to clevis pin that attaches unit to boat If pins r...

Page 20: ...erline of the holes Sight into hole to determine screw hole locations Secure using hex key Use Tef Gel on screws NOTE You will likely adjust foil height again once system is up on the mast and turnbuc...

Page 21: ...e must attach to toggle Do not attach stay to crosspin at drum assembly because crosspin and plates may fatigue and break causing an accident damage to your vessel personal injury or death See www har...

Page 22: ...ad line through block in opposite direction Lead line to Furling Line Cleat in cockpit 7402 Ratchet Stanchion Block Install so line is angled as shown Use 10 5 mm fasteners HCP168 Furling Line Cleat M...

Page 23: ...here has been a halyard wrap so they can avoid an accident by relying on standing rigging or halyards Inspection must be done while rigger is suspended from a separate crane or mast must be lowered to...

Page 24: ...halyard should be firm but not too tight Tip The luff foil system supports sail along its length so halyard tension is used only to shape sails not to support them Use enough halyard tension to remove...

Page 25: ...be possible to attach spinnaker halyard to bow pulpit or it may be sucked into jib when furling On some boats the spinnaker halyard lays across headstay and will catch on halyard swivel foils or jib h...

Page 26: ...out at the dock See Furl and Unroll Sail 11 If not sailing right away make sure sail is furled carefully See Secure Sail WARNING Sail can become uncontrollable when raising in windy conditions resulti...

Page 27: ...light wind and left loosely secured can be a problem if wind increases IMPORTANT Remove sail from furler if extreme winds are predicted especially if boat is left unattended IMPORTANT Check all points...

Page 28: ...with drum assembly extending beyond mast Remove masthead clevis pin and shift furler up so drum assembly can be strapped securely to mast Some people remove drum assembly and halyard swivel for stora...

Page 29: ...timal halyard angle Foils riding on turnbuckle Raise foils See adjusting turnbuckle on page 21 Foils too high binding on swage eye Lower foils See adjusting turnbuckle on page 21 Jib halyard is too ti...

Page 30: ...1 2 x 1 46 2 H 42395 4 Cotter Pin 1 8 x 1 18 8 2 HFS220 5 Cotter Pin 3 32 x 3 4 18 8 1 HFS181 6 Nylon Washer 2 HFS1109 Stud Jaw Toggle 1 7311 20 5 8 1 Toggle 1 H 41300 2 Crosspin 5 16 x 211 16 1 H 42...

Page 31: ...expert users 4118 12 12 2012 MKIV JIB REEFING FURLING Unit 2 Installation Manual Intended for specialized personnel or expert users Preassembly Safety Precautions Parts Descriptions 2 3 Parts Descrip...

Page 32: ...it Email info harken it Harken New Zealand Ltd 129 Westhaven Drive Westhaven Auckland 1011 New Zealand Telephone 64 9 303 3744 Fax 64 9 307 7987 Web harken co nz Email harken harken co nz Harken Pols...

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