Harken 7413.15 MKIV Hydraulic Jib Reefing & Furling - Manual (Page 34)

34 MKIV Hydraulic Unit 3
Problem Probable Cause Solution
Sail will not furl or
is difficult to furl.
Jib halyard is wrapping around headstay because
angle between mast and and halyard is too shallow
See installation instructions regarding optimal halyard angle. It may be necessary
to mount a halyard restrainer on front of your mast to hold halyard to rear.
Jib halyard is wrapping around the headstay
because halyard swivel is too low.
See installation instructions regarding optimal halyard swivel height. A wire pendant
may be needed at head of sail to raise halyard swivel to proper height.
Jib halyard is too tight. Ease jib halyard.
Foils riding on turnbuckle. Raise foils. See adjusting turnbuckle on page 27.
Foils too high, binding on swage eye. Lower foils until clear. See adjusting turnbuckle on page 27.
Spare halyard is wrapping in sail as it furls. Secure spare halyards away from furling headstay by flipping them behind spreaders
Salt or dirt in bearings. Flush bearings with freshwater and lubricate with dry spray lubricant such as McLube ®
Sail full of wind. Luff completely before furling or reefing.
Sail flogging too much. Release a short length of sheet, furl a small amount and repeat.
Foil out of clamp. Reinstall foil in lower unit and tighten clamp screws.
Halyard swivel installed upside down. Remount swivel correctly.
Sail will not unfurl
or will not unfurl
completely.
Jib halyard is wrapping around headstay because
angle between mast and halyard is too shallow.
See installation instructions regarding optimal halyard angle. It may be necessary to
mount a halyard restrainer on front of your mast to hold halyard to rear.
Jib halyard is wrapping around the headstay
because the halyard swivel is too low.
See installation instructions regarding optimal halyard angle.
Foils riding on turnbuckle. Raise foils. See adjusting turnbuckle on page 27.
Foils too high, binding on swage eye. Lower foils. See adjusting turnbuckle on page 27.
Jib halyard is too tight. Ease jib halyard.
Spare halyard is wrapping in sail as it furls. Secure spare halyards away from furling headstay by flipping them behind spreaders
Salt or dirt in bearings. Flush bearings with freshwater and lubricate with dry spray lubricant such as McLube ®
Sail will not furl
completely.
Spare halyard catching in sail as it furls. Move halyards away from furling headsail as above.
Headstay rotates in
jerks or elliptically.
Insufficient tension on headstay. Tighten headstay and/or backstay to eliminate sag in headstay.
Sail does not stay
furled.
Sail not furled tightly on stay. Keep some tension on sheets when furling in light air to get a tight, secure wrap.
Sail will not go up. Luff tape will not go into groove. Check luff tape for fraying.
Check luff tape size.
Sail catching at prefeeder. Flake sail more loosely on deck.
Dirt in groove. Attach a halyard and downhaul to a small section of luff tape and clean groove by raising
and lowering.
Sail will not raise
completely or luff
will not tension.
Halyard swivel is hitting end stop. Luff of sail is too long and must be recut.
Angle between halyard and mast is too sharp
and halyard is pulling too much to the rear.
Halyard must be routed from a point higher on mast. This may require that halyard turning
block aloft be replaced or sail shortened.
Sail will not
come down.
Halyard is wrapping on headstay. Angle between headstay and halyard is too shallow and must be optimized per installation
instructions.
Halyard swivel off foil. Sail luff too long or foil is too short or low and must be lengthened or raised.
Ultravoilet cover rolls
up inside of sail.
Wrong switch used to furl sail. Unroll sail and use other switch to furl. Alternatively, rewire switch if preferred. Once
correct one is determined, label switch "furl" and the other "Unfurl."
Troubleshoot
Loctite ® is a registered trademark of Henkel AG & Company KGaA
McLube ™ is a registered trademark of McGee Industries, Inc.
Sta-Lok ® is a registered trademark of Sta-Lok Terminals, Ltd.
Tef-Gel ® is a registered trademark of Ultra Safety Systems, Inc.
3M ™ is a registered trademark of Minnesota Mining and Manufacturing Company AkA 3M CORPORATION
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