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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
MKIV Unit 3 Exploded View H-45412 Top Cover 
Special Order		 2
HFS1091 ↳ Top Cover Screw (M5 x 8 x 16MM) 2
H-45413 Bottom Flange  2
HFS1060 ↳ Bottom Flange Screw (M5 x 12MM) 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
H-45562 Guard 
Special Order		 2
HFS1168 ↳ Guard screw (M10 X 65 mm FH) 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
H-45264 Clamp
Special Order		 1
HFS1107 ↳ Clamp screw (M8 X 25mm FH) 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
MKIV Unit 3 Image 7413.10BASE Hub Assembly
Special Order		 1
H-38168 ↳ Ball Plugs 5
MP-128 ↳ Torlon ball bearing (1/2")
Special Order 		25
MP-116 ↳ Delrin ball bearing (1/2")
Special Order 		100



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
- 7413.20 3/4 Jaw/jaw toggle with short link plates 1
1 H-41489 ↳ Toggle
Special Order 		1
2 H-45334 ↳ Plates
Special Order 		1
3 H-42583 ↳ Crosspin 2
4 H-42403 ↳ Clevis pin (3/4" X 1.766:GR 302SS)
Special Order 		2
5 H-42585 ↳ Isolator 2
- 7413.20 7/8 Jaw/jaw toggle with short link plates 1
1 H-42562 ↳ Toggle
Special Order 		1
2 H-45334 ↳ Plates
Special Order 		2
3 H-42584 ↳ Crosspin 1
- H-42404 Clevis pin (7/8" X 1.958" 302SS)
Special Order		 1
1 H-42585 ↳ Isolator
 2
2 HFS203 ↳ Cotter pin (5/32" X 1.250 18-8) 2
3 HFS991 ↳ Nylon locking nut 2
4 HFS903 ↳ Socket head cap screw 4



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
- 7426-22 Rod Adapter Stud w/Nosepiece (-22) 1
1 H-41812 ↳ Stud (Main Body)
Special Order 		1
2 H-41811 ↳ Nosepiece (-22)
Special Order 		1
3 HFG319 ↳ Cotter Pin (3/32" x 1.750")
Special Order 		2
4 HFG303 ↳ Stud Cap (7/8" ID)
Special Order 		1
- 7427-30 Rod Adapter Stud w/Nosepiece (-30) 1
1 H-41814 ↳ Stud (Main Body)
Special Order 		1
2 H-41813 ↳ Nosepiece (-30)
Special Order 		1
3 HFG319 ↳ Cotter Pin (3/32" x 1.750")
Special Order 		2
4 HFG303 ↳ Stud Cap (7/8" ID)
Special Order 		1



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 3/4" Toggle) Part N° (for 7/8" Toggle) Description Quantity
DIAGRAM 7 - HARKEN MKIV UNIT 1 - 7313.21 3/4 7313.21 7/8 Long Link Plate w/Toggle 1
1 H-41489 H-42562 ↳ Toggle
Special Order 		1
2 H-42568 H-42568 ↳ Strap
Special Order 		2
3 H-42583 H-42584 ↳ Upper Clevis Pin (Custom) 1
4 H-42403 H-42404 ↳ Lower Clevis Pin
Special Order 		1
5 H-42585 H-42585 ↳ Isolator 2
6 HFS203 HFS203 ↳ Cotter Pin 2
7 HFS991 HFS991 ↳ Nylon Locking Nut 2
8 HFS903 HFS903 ↳ Socket Head Cap Screw 4



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
HFG682 Trim Cap Set w/o Screws 1
HFG672 Trim Cap Screw Set 1
HFS1127 ↳ Trim Cap Screw 2
H-39392 Halyard Swivel 1
H-39916 ↳ Clip/Smalley Ring for Balls
Special Order 		2
MP-128 ↳ Torlon Ball Bearings
Special Order 		88
7413.FOILSET.BLACK Foil Set, Less Bottom Foil (Standard)
Special Order 		1
7413.30.BLACK ↳ Foil (7' / 2.13 m Luff)
Special Order 		10
7413.33.BLACK ↳ Foil (2' / 610 mm Bottom - Standard)
Special Order 		1
7413.FOILSET.CLEAR Foil Set, Less Bottom Foil (Special Order)
Special Order 		1
7413.30.CLEAR ↳ Foil (7' / 2.13 m Luff)
Special Order 		10
7413.33.CLEAR ↳ Foil (2' / 610 mm Bottom - Special Order)
Special Order 		1
HFG349 Foil Screw Set 1
HFS1106 ↳ Foil Screw 46
7413.31 Connector Kit 1
- ↳ Connector (247 mm / 9 3/4")
Special Order 		1
H-42073 ↳ Connector Bushing A 2
H-42074 ↳ Connector Bushing B 2
7413.32 Bottom Connector Kit 1
- ↳ Bottom Connector (355 mm / 14")
Special Order 		1
HFG627 Connector Set 1
HFG297 Connector Bushing Set 20
HFG324 Plastic Connector Wedge Set 22
H-39756 Feeder with Screw and Tab 1


 

Extra Tools

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Exploded View Part N° Description Quantity
Extra Tools Diagram
4673 Instruction Manual
Special Order 		1
833 Blue Loctite adhesive
Special Order		 1
HFG739 Red Loctite adhesive
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
947 Prefeeder
 3


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
Halyard Diagram
945 Halyard Restrainer (Optional) 1
945A ↳ Sheave/SS Inner Race Only
Special Order 		1
HCP208 ↳ Clevis Pin (1/4" x 1.0625" 18-8)
Special Order 		1
HCP394 ↳ Bracket-Large
Special Order 		1
HFS181 ↳ Cotter Pin (1/16" x .500" 18-8) 1
7304 Halyard Deflector 1
2124 Shackle 3
- Hex Keys
Special Order 		-
HFG647 ↳ M10 Hex Key
Special Order 		1
HFG644 ↳ M6 Hex Key
Special Order 		1
HFG640 ↳ M4 Hex Key 1
HCP1089 ↳ M3 Hex Key
Special Order 		1

 

 

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