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MKIV furling systems are strong, lightweight and aerodynamic, with the performance and features Harken® is known for. Longevity, ease of use, and simplicity of installation are crucial components of the design sailing adventure.

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Drum 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
DIAGRAM 1 - HARKEN MKIV UNIT 1 HFG686 Top Cover Assembly w/Screws 1
HFS980 ↳ Top Cover Screw (M4 x .7 x 10MM) 2
H-35665D ↳ Top Cover
Special Order 		2
HFG687 Bottom Flange Assembly w/Screws 1
H-35600C ↳ Flange 2
HFS980 ↳ Bottom Flange Screw (M4 x .7 x 10MM) 2



Drum Guard 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
DIAGRAM 2 - HARKEN MKIV UNIT 1 HFG688 Guard Assembly 1
H-35199E ↳ Guard Set
Special Order 		2
HFS1052 ↳ Guard Screw (M6 x 1 x 40MM SHCS) 2



Drum Torque Tube

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
DIAGRAM 3 - HARKEN MKIV UNIT 1 HFG696 Clamp with Screws 1
H-42954 ↳ Clamp
Special Order 		1
HFS827 ↳ Clamp Screw (M5 x .08 x 12MM SHCS) 4



Hub 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
DIAGRAM 4 - HARKEN MKIV UNIT 1 7411.10BASE Hub Assembly 1
H-35144A ↳ Ball Plugs 5
MP-129 ↳ Torlon Ball Bearing
Special Order 		24
MP-118 ↳ Delrin Ball Bearing
Special Order 		96
H-36636A ↳ IGUS® Crosspin Bushing
Special Order 		2



Rod Adapter Stud

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 Image Ref. Part N° Description Quantity
Rod Adapter Stud Diagram
- 7422-8 Rod Adapter Stud w/Nosepiece (-8) 1
1 H-41536 ↳ Stud (Main Body)
Special Order 		1
2 H-41534 ↳ Nosepiece (-8)
Special Order 		1
3 HFG193 ↳ Cotter Pin (3/32" x 1" 18-8)
Special Order 		2
- 7423-10 Rod Adapter Stud w/Nosepiece (-10) 1
1 H-41536 ↳ Stud (Main Body)
Special Order 		1
2 H-41535 ↳ Nosepiece (-10)
Special Order 		1
3 HFG193 ↳ Cotter Pin (3/32" x 1" 18-8)
Special Order 		2
- 7424-12 Rod Adapter Stud w/Nosepiece (-12) 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" 18-8)
Special Order 		2



Eye/Jaw Toggle (sold separately)

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 Diagram Ref. Part N° Description Quantity
DIAGRAM 6 - HARKEN MKIV UNIT 1 - 7411.20 1/2 Eye/Jaw Toggle Reversible 1
1 H-37675C ↳ Toggle
Special Order 		1
2 H-42396 ↳ Crosspin (5/16" x 2 11/16") 1
3 HFS1109 ↳ Nylon Washer 2
4 H-42049 ↳ Cross Hole Plug
Special Order 		2
5 H-42395 ↳ Clevis Pin (1/2" x 1 1/2") 1
6 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8) 1
7 HFS181 ↳ Cotter Pin (3/32" x 3/4" 18-8) 1
- 7311.20 1/2 Jaw/Jaw Toggle 1
1 H-42336 ↳ Toggle
Special Order 		1
2 H-42396 ↳ Crosspin (5/16" x 2 11/16") 1
3 H-42395 ↳ Clevis Pin (1/2" x 1 1/2") 2
4 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8) 2
5 HFS181 ↳ Cotter Pin (3/32" x 3/4" 18-8) 1
6 HFS1109 ↳ Nylon Washer 2
- 7311.20 5/8 Stud/Jaw Toggle 1
1 H-41300 ↳ Toggle
Special Order 		1
2 H-42396 ↳ Crosspin (5/16" x 2 11/16") 1
3 H-42397 ↳ Clevis Pin (5/8" x 1 1/2") 2
4 H-43207 ↳ Stud
Special Order 		1
5 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8) 3
6 HFS181 ↳ Cotter Pin (3/32" x 3/4" 18-8) 1
7 HFS1109 ↳ Nylon Washer 2



Long Link Plate w/Toggle (sold separately)

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 Diagram Ref. Part N° (for 1/2" Toggle) Part N° (for 5/8" Toggle) Description Quantity
DIAGRAM 7 - HARKEN MKIV UNIT 1 - 7311.21 1/2 7311.21 5/8 Long Link Plate w/Toggle 1
1 H-42159 H-41300 ↳ Toggle
Special Order 		1
2 H-42178 H-42178 ↳ Strap
Special Order 		2
3 H-42170 H-42171 ↳ Upper Clevis Pin (Custom)
Special Order 		1
4 H-42395 H-42397 ↳ Lower Clevis Pin 1
5 H-42182 H-42182 ↳ Isolator
Special Order 		2
6 HFS220 HFS203 ↳ Cotter Pin
Special Order 		2
7 HFS846 HFS846 ↳ Nylon Locking Nut (M10)
Special Order 		2
8 HFS876 HFS876 ↳ Allen Cap Screws (M6x1x12MM SHCS) 4
9 833 833 ↳ Loctite Blue
Special Order 		1



Foils, Swivel & Connectors

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
DIAGRAM 8 - HARKEN MKIV UNIT 1
HFG680 Trim Cap Set w/o Screws 1
HFG629 Trim Cap Screw Set 1
HFS1126 ↳ Trim Cap Screw 3
H-39812 Halyard Swivel w/o Shackles 1
MP-129 ↳ Torlon Ball Bearings
Special Order 		96
H-36125A ↳ Clip/Smalley Ring
Special Order 		2
7411.FOILSET.BLACK Foil Set, Black
Special Order 		1
7411.30.BLACK ↳ Foil (7' / 2.13 m) Luff, Black Anodized
Special Order 		6
7411.33.BLACK ↳ Foil (2' / 610 mm) Bottom, Black Anodized
Special Order 		1
7411.FOILSET.CLEAR Foil Set, Clear
Special Order 		1
7411.30.CLEAR ↳ Foil (7' / 2.13 m) Luff, Clear Anodized
Special Order 		6
7411.33.CLEAR ↳ Foil (2' / 610 mm) Bottom, Clear Anodized
Special Order 		1
HFG343 Foil Screw Set 1
HFS1105 ↳ Foil Screw 30
HFG625 Connector Set w/o Bushings 1
- ↳ Connector (7" / 178 mm) 5
- ↳ Connector Bottom (10.75" / 273 mm) 1
HFG295 Connector Bushing Set 1
H-42062 ↳ Connector Bushing (Curved/Longer) 12
H-42063 ↳ Connector Bushing (Flat/Shorter) 12
7411.31 Connector w/ Bushings, Foil Screws, and Wedges 1
- ↳ Connector (7" / 178 mm) 1
- ↳ Connector Bushing (Curved/Longer) 2
- ↳ Connector Bushing (Flat/Shorter) 2
- ↳ Foil Screw 4
- ↳ Connector Wedge 2
7411.32 Connector w/ Bushings Bottom 1
- ↳ Connector Bottom (10.75" / 273 mm) 1
- ↳ Connector Bushing (Curved/Longer) 2
- ↳ Connector Bushing (Flat/Shorter) 2
HFG299 Connector Wedge Set 1
H-39625 ↳ Connector Wedge 14
H-39683 Feeder Set 1
H-356238 ↳ Feeder
Special Order 		1
HFS1129 ↳ Feeder Screw 1
H-35666A ↳ Tab 1


 

Extra Tools

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
Extra Tools Diagram
4417 Instruction Manual
Special Order 		1
947 Prefeeder 1
HFG739 Loctite® Red
Special Order 		2
HFG725 5200 Adhesive Set
Special Order 		1
HFG722 ↳ 5200 Marine Adhesive Sealant
Special Order 		1
HFG200 ↳ Injector #1
Special Order 		1
HFG201 ↳ Injector #2
Special Order 		1
HFG233 7 mm Double Braid Polyester (70' / 21.3 m
 1


Additional Accessories

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
Diagram 10 - MKIV Unit 1 Exploded View
7404 Lead Block Kit
Special Order 		1
7403 ↳ 29 mm Outboard Lead Assembly
Special Order 		3
7402 ↳ 57 mm Carbo Ratchet Assembly
Special Order 		1
7401 ↳ 40 mm Carbo Assembly
Special Order 		1
HCP168 ↳ Horn Cleat
Special Order 		1
2110 Bow Shackle (6 mm)
Special Order 		3
944 Halyard Restrainer
Special Order 		1
944ASSY ↳ Sheave/SS Inner Race Only
Special Order 		1
HFG467 ↳ Clevis Pin (1/4' x 9' 18-8) 1
HCP393 ↳ Bracket-Small
Special Order 		1
HFS118 ↳ Cotter Pin (1/16" x 1/2" 18-8)
Special Order 		1
7302 Halyard Deflector 1
- Hex Keys -
HFG643 ↳ 5 mm Hex Key
Special Order 		1
HFG640 ↳ 4 mm Hex Key 1
HCP1387 ↳ 2.5 mm Hex Key 1

 

 

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