Harken Jib Furler MKIV Underdeck Unit 2

Harken’s MKIV Underdeck Furling is the perfect solution for performance racers and cruisers who want an aerodynamic system with a minimal amount of equipment above deck. The drum is located beneath the deck, lowering the tack height for maximized sail area. The small outside drum diameter lets unit fit inside narrow bows.

Clic to go to the desired section

• Top & Bottom Cover Assembly
• Guard Assembly
• Torque Tube Assembly
• Hub Assembly
• Rod Adapter Stud
• Foils & Connectors w/Bushings
• Additional Accessories
• Extra Tools

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Top Cover Assembly

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View	Part N°	Description	Quantity
	HFG686	Top Cover Assembly w/Screws	1
	H-35665D	Top Cover Special Order	2
	HFS980	Top Cover Screw (M4 x .7 x 10MM)	2
	HFG687	Bottom Flange Assembly w/Screws	1
	H-35600C	Flange	2
	HFS980	Bottom Flange Screw (M4 x .7 x 10MM)	2

Guard Assembly

Exploded View	Part N°	Description	Quantity
	HFG688	Guard Assembly	1
	H-35199E	Guard Set Special Order	2
	HFS1052	Guard Screw (M6 x 1 x 40MM SHCS)	2

Torque Tube Assembly

Exploded View	Image Ref.	Part N°	Description	Quantity
	-	HFG928	Torque Tube Assembly Special Order	1
	1	H-42346	Clamp Special Order	1
	2	HFS747	Clamp Screw (M6 x 1 x 16MM SHCS)	4

Hub Assembly

Exploded View	Image Ref.	Part N°	Description	Quantity
	-	HFG924	Hub Assembly Special Order	1
	1	HFS203	Cotter Pin (5/32" x 1.250")	4
	2	H-42397	Clevis Pin (1/2" x 1.146")	4
	3	HFG933	Bearing Cap w/Insert Special Order	2
	A	H-43231	Bearing Cap Special Order	1
	B	HCP1707	IGUS Bushing Special Order	1
	4	HFS876	Socket Head Cap Screws (M6 x 1 x 12MM)	4
	-	H-33860A	Ball Plug	5
	-	MP-127	Torlon Ball Bearing (3/8") Special Order	28
	-	MP-123	Delrin Ball Bearing (3/8") Special Order	134
	5	H-43100	Deck Flange Special Order	1

Rod Adapter Stud

Exploded View	Image Ref.	Part N°	Description	Quantity
	-	7424-12	Rod Adapter Stud (-12) w/Nosepiece	1
	1	H-41531	Stud (Main Body) Special Order	1
	2	H-41527	Nosepiece (-12) Special Order	1
	3	HFG193	Cotter Pin (3/32" x 1") Special Order	2
	-	7425-17	Rod Adapter Stud (-17) w/Nosepiece	1
	1	H-41531	Stud (Main Body) Special Order	1
	2	H-41526	Nosepiece (-17) Special Order	1
	3	HFG193	Cotter Pin (3/32" x 1") Special Order	2

Trim Cap & Foil Components

Exploded View	Part N°	Description	Quantity
	HFG681	Trim Cap Set w/o Screws	1
	HFG672	Trim Cap Screw Set	1
	HFS1127	Trim Cap Screw	3
	H-39794	Halyard Swivel w/o Shackles Special Order	1
	MP-127	Torlon Ball Bearings Special Order	92
	H-38028A	Clip/Smalley Ring Special Order	2
	7412.FOILSET.BLACK	Foil Set - Standard Special Order	1
	7412.30.BLACK	Foil (7'/2.13 m) Luff Special Order	8
	7412.33.BLACK	Foil (2'/610 mm) Bottom Special Order	1
	7412.FOILSET.CLEAR	Foil Set (Special Order) Special Order	1
	7412.30.CLEAR	Foil (7'/2.13 m) Luff Special Order	8
	7412.33.CLEAR	Foil (2'/610 mm) Bottom Special Order	1

Instruction Manual & Accessories

Exploded View	Part N°	Description	Quantity
	4656	Instruction Manual Special Order	1
	947	Prefeeder	1
	833	Loctite Blue Special Order	1
	HFG739	Loctite Red Special Order	2
	HFG725	5200 Adhesive Set Special Order	1
	HFG722	5200 Marine Adhesive Sealant Special Order	1
	HFG200	Injector Special Order	1
	Hex Keys
	HFG644	6 mm Special Order	1
	HFG643	5 mm Special Order	1
	HFG640	4 mm	1
	HCP1089	3 mm Special Order	1

Lead Block Kit

Exploded View	Part N°	Description	Quantity
	7404	Lead block kit	1
	7403	29 mm outboard lead assembly	3
	7402	57 mm Carbo ratchet assembly	1
	7401	40 mm Carbo assembly	1
	HCP168	Horn cleat Special Order	1
	Additional Lead Blocks
	2652	40 mm Carbo Stand-Up Fixed	1
	47	2.25" Thru-Deck Special Order	1
	2117	Shackle (8 mm)	3
	944	Halyard Restrainer	1

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