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WARNING! Strictly follow all instructions
to avoid an accident, damage to your vessel,
personal injury or death. See www.harken.com
for additional safety information.
Please read these instructions carefully before installing, servicing, or operating the equipment.
This manual may be modified without notice. See: www.harken.com/manuals for updated versions.
PLEASE SAVE THESE INSTRUCTIONS
MKIV HYDRAULIC JIB REEFING & FURLING
Unit 3
Installation Manual – Intended for specialized personnel or expert users
4379 v1 08/21
Preassembly
Introduction and safety precautions
2
Part descriptions
2 - 3
Sizing check
3
Parts
4 - 5
Rigging parts check/tools
6
Hydraulic system
7 - 8
Toggle deductions/stay into foil options
9
Top foil lengths
10 - 11
Short top foil
11
Confirm foil length
12
Assembly
Foils/connectors
13 - 18
Bottom foil/connectors/halyard swivel
19
Lower unit to foil
20
Rod rigging: rod adapter stud
21
Attach turnbuckle/toggle
22 - 23
Attach hydraulic cylinder
23 - 24
Feeder/final
25
Commissioning
Turnbuckle on boat
26
Halyard swivel height/lead angle
27
Halyard restrainer/tension
28
Operation
Halyard: headstay tension
29
Reefing/secure sail
30
Manual operation
31
Race conversion
32
Maintenance/Inspection/Decommissioning
33
Troubleshoot/Warranty
34
Appendix
Component part number list
35 - 37
Toggle dimensions
38
Dimensions/sailmaker's instructions
39