Harken MKIII UNIT 3 User Manual

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MKIII
Jib Reefing &
Furling Systems
UNIT 3

Harken MKIII UNIT 3 Specifications

General

Brand	Harken
Model	MKIII UNIT 3
Category	Marine Equipment
Language	English

Summary

Preparation Before Assembly

Tools

Preassembly

Determining Headstay Length

Explains how to measure the headstay.

Norseman- and Sta-Lok-Terminals

Cutting Headstay to Length

Instructions for cutting the headstay.

Rod Terminals

Stringing Connectors

Norseman/Sta-Lok Instructions

Rod Instructions

Assembly

Step 1: Top Connector and Trim Cap

Attaching top connector and trim cap.

Step 8: Adjust Headstay Tension

Adjusting the headstay tension.

Assembly

Step 2: First Foil Connector

Installing the first foil connector.

Step 3: First Main Foil Extrusion

Attaching the first main foil extrusion.

Step 4: Complete Main Body Assembly

Finishing the main body of the foil.

Step 5: Attach Swivel, Feeder, Torque Tube

Attaching swivel, feeder, and torque tube.

Step 6: Attach Drum

Attaching the drum to the unit.

Step 7: Raise Unit into Position

Positioning the unit on the boat.

Step 9: Attach Torque Tube and Clamp Foils

Attaching torque tube and clamping foils.

Special Assembly

Norseman/Sta-Lok terminal assembly

Rod Terminal Assembly

Commissioning

Leading the Furling Line to the Cockpit

Routing the furling line to the cockpit.

Halyard Swivel Height o Halyard Lead Angle

Halyard Tension

Operation

Furling and Reefing

How to furl and reef.

Troubleshooting Guide

Assembly

Troubleshooting assembly issues.

Connector Missing

Problem: Missing connector.

Too many connectors

Problem: Too many connectors.

Foil will not slip past threaded stud.

Problem: Foil won't slip.

Connector will not fit into foil extrusions.

Problem: Connector won't fit.

Warning color shows on threads at turnbuckle when rig is tuned or more than 2" (51 mm) of thread is exposed at the top or bottom of the turnbuckle.

Problem: Turnbuckle thread warning.

Operation

Troubleshooting operation issues.

Sail will not furl or is difficult to furl.

Problem: Sail hard to furl.

Sail will not unfurl or will not unfurl completely.

Problem: Sail won't unfurl.

Sail will not furl completely.

Problem: Sail won't furl completely.

Headstay rotates in jerks or elliptically.

Problem: Headstay rotation issues.

Sail does not stay furled.

Problem: Sail not staying furled.

Sail will not go up.

Sail will not raise completely or luff will not tension.

Sail will not come down.