Hydraulic
Jib Reefing & Furling
Installation Manual
Unit 3/3.25
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.
Table of Contents Dimensions
■ TABLE OF CONTENTS
General Specifications
Dimensions .......................................................................2
Stainless Surface, Port Side Up, Hoses and Fittings .......
Drain System, Valves, Pressure, Oil .................................
3
4
Parts ...............................................................................5 - 6
Preparation
Headstay Cut Length, Connectors ....................................
Foil Cut Length, Top Foil Cut Length ................................
Short Top Foil, Connector and Foil Quantity ....................
Cutting Top Foil .................................................................
7
8
9
9
Assembly
Foil Assembly ...............................................................10 - 11
Attach Stay – Rod Unit 3 .................................................
Stay to Lower Unit Connection - Rod Unit 3.25 .............
Attach Stay – Wire ...........................................................
Lower Toggle and Cowling ..............................................
Install Torque Tube, Raise Foils .......................................
Foil Length Check ...........................................................
Raise Unit; Gear Box Pressure ........................................
Install Hoses, Oil Level, Headstay Tension
......................19
Halyard Wraps .................................................................
12
13
14
15
16
17
18
20
Pendants ..........................................................................21
Halyard Restrainer ...........................................................
Halyard Tension ...............................................................
Backstay Tension .............................................................
Before Operation, Manual Operation ...............................
21
22
22
23
DIMENSIONS *Unit with 7/8" (22.2 mm) clevis
A B C D E
1
/2"
34
876 mm
F G H I J
12"
305 mm
*Subtract 3/8" (10 mm) for 3/4" (19 mm) clevis. Add 1/2" (13 mm) for
1" clevis (A to F only).
1
/8"
24
613 mm
1
/4"
7
184 mm
5
/8"
20
524 mm
3
/8"
7
200 mm
1
/2"
9
241 mm
3
/4"
7
197 mm
3
/4"
10
273 mm
12"
305 mm
Warranty — Online at www.harken.com or call, write,
email or fax Harken, Inc., Pewaukee, WI USA
2 Hydraulic 3/3.25 7/17/08
General Specifications Stainless Surface/Port Side Up/Hoses/Fittings
■ STAINLESS STEEL SURFACE
Be careful not to scratch the stainless steel surfaces of the
lower unit. Lay the unit on terry cloth or other soft material
while assembling.
The hydraulic unit is polished stainless and does not have
chrome plating. This surface can be polished using standard
stainless steel polishes to maintain its appearance.
■ PORT SIDE UP
Keep the port side of the unit facing up when sitting on its
side.
If unit will sit for a long period of time, or is stored or
shipped, keep the port side of the lower unit facing up. This
will prevent gear oil from leaking out of a pressure relief
valve.
TIP: When the port side is up, the sideplate with the winch
handle socket will be facing down.
If a small amount of gear oil does leak out of the valve during
shipping or installation, it will drip out of the bottom of the
unit when up in sailing position. Use a rag to catch this
leakage.
■ HOSES
Hoses are not supplied with furler.
Use SAE 100 R1 or R2 hoses.
Sizes depend on the distance that the hoses will run and the
power source. For shorter runs use:
3
Two Drive Hoses: -6 (
One Drain Hose: -4 (
/8" ID)
1
/4" ID)
Contact Harken for further hose size recommendations.
■ HOSE END FITTINGS
Hose fittings are not supplied with furler.
All fittings must be stainless steel. Standard attachment
method uses female hose end fittings.
Furling unit end fittings have JIC 37° flair fittings.
Note: Do not use locking solution or tape on connections.
Hose end fittings sizes:
Drive fittings - JIC 9/16-18 female swivel
Drain fittings - JIC 7/16-20 female swivel
■ ALTERNATE FITTING METHOD
Remove furling unit end fittings. Use SAE straight thread
O-ring male hose end fittings:
Drive fitting - 9/16-18
Drain fitting - 7/16-20
April 2000 Hydraulic 3/3.25 3
General Specifications Drain System/Valves/Pressure/Oil
■ DRAIN SYSTEM
Besides the main hoses for forward and reverse, a fitting for
a drain hose is included. The drain hose must be lead to the
main reservoir in the power unit.
Power Requirements
Rotation at No LoadRecommended Flow RateSize
50 RPM5 GPM (16 l/min.)3/3.25
The unit will work with any Harken hydraulic power pack.
Best performance will be with the hydraulic 6 or 8 system.
See performance charts.
■ VALVES ON POWER UNIT
Furler can be used with open or closed center, 4-way,
3-position control valves.
■ MAXIMUM OPERATION PRESSURE
Set relief valve on power plant at 140 Bar or 2000 PSI.
Harken power packs ship with valves set at 140 Bar.
■ OIL SPECIFICATIONS
Gear box oil - AGMA8, 90 weight gear oil
18 ounce (510 g) capacity
Note: The gear box is filled with oil at the factory.
Under normal conditions there is no need to change
the gear box oil.
Hydraulic fluid is a petroleum based oil, ISO viscosity
grade 46, anti-corrosion, anti-foam, anti-oxidant,
anti-rust, anti-wear additives.
Fluid examples: Exxon Nuto, Shell Tellus, BP Energol HLP
CAUTION!: The only parts of furler to be
disassembled by installer are the Torque Tube and
Lower Cowling. All other work should be performed
by factory-authorized personnel. Work performed
by unauthorized personnel may void the Harken
limited warranty.
Note: Some fluid may drip from the unit during shipping.
This is normal and should stop once the unit is in its sailing
position. All units are tested before leaving the factory.
Units are shipped port side facing up.
Make sure unit is shipped or stored port side up. If it is
not, gear oil will leak out of the pressure relief valve.
4 Hydraulic 3/3.25 10/7/08
Parts
■ MAIN COMPONENTS
Halyard Swivel Torque Tube
Cowling Toggle
■ MAIN HOUSING
April 2000 Hydraulic 3/3.25 5
Parts
■ MISCELLANEOUS PARTS
Red Loctite® Foil Screws Foil Wedges
6 mm, 8 mm
Allen Wrench
Blue Loctite® Torque Tube Screws Super Bonder
Cross Pin Clevis Pin Cotter Pin
Circlip Tack Shackle Feeder
■ RIGGER PARTS
Trim Cap Connectors Long Bottom
Connector
■ TERMINAL-WIRE
Nosepiece Wedge
Main Body Former
Drive Pin
■ TERMINAL-ROD UNIT 3
Unit 3
Nosepiece Cotter Pins
■ TERMINAL-ROD UNIT 3.25
Nosepiece Drive Pin Collar
Unit 3.25
■ FOILS
Bottom Foil Foils
6 Hydraulic 3/3.25 April 2000
Preparation Headstay Cut Length/Connectors
■ HEADSTAY CUT LENGTH
The following cut lengths will result in the headstay adjuster
1
/2 open. At this cut length, 21/2" (64 mm) of adjustment
being
will remain in the stay adjuster in either direction.
Subtract the following from the headstay length and cut the
stay at that point.
HEADSTAY CUT LENGTH CHART
CLEVIS PIN SIZE
3
/4" (19.1 mm)7/8" (22.2 mm) 1" (25.4 mm)
7
/16" wire 241/2" (622 mm) ---
1
/2" wire
9
/16" wire 251/4" (641 mm) 253/4" (654 mm)
11 mm wire
12 mm wire
14 mm wire
-22 rod (9.53 mm)
-30 rod (11.1 mm)
-40 rod (12.7 mm)
1
/2" (622 mm)
24
3
23
/4" (603 mm) 241/8" (613 mm) ---
7
/8" (632 mm)
24
7
24
/8" (632 mm) ---
1
25
/4" (641 mm) 253/4" (654 mm)
1
24
/8" (613 mm)
1
24
/8" (613 mm) 253/4" (654 mm)
---
Note: The Harken hydraulic furler has an integral toggle. No
additional toggle is required below the furler.
■ STRINGING CONNECTORS ON STAY
Make sure the trim cap is at the top and the correct number
of connectors are used. The long bottom connector must be
slid on the wire or rod last.
■ -40 (12.7mm) ROD COLDHEAD HEIGHT
Make sure the length of coldhead does not interfere with the
1
drive pin. There is
/4" (6.5 mm) between the collet bottom
and the rollpin.
April 2000 Hydraulic 3/3.25 7
Preparation Foil Cut Length/Top Foil Cut Length
■ FOIL CUT LENGTH - UNIT 3 / 3.25
Foil cut length is based on pin-to-pin length as measured
from center of upper pin (attaches the stay to the mast) to
center of lower pin (attaches the furling unit to the boat).
Measurement includes the masthead toggle. The hydraulic
furler has a lower integral toggle. No additional toggle is
required below the unit.
1
There must be more than 2
above the trim cap when the adjuster is set to the half way
point. The total adjuster stroke is 5" (127 mm). (See inset 1)
To check foil length, lay foils alongside stay before cutting
top foil. Set stay adjuster to the half way point.
■ TOP FOIL CUT LENGTH
Instructions For Worksheet Below:
1 Fill in total pin-to-pin length.
2 Fill in A length. Fill in G from numbers below.
3/4" (19.1 mm) Clevis Pin = 31" (787 mm)
7
/8" (22.2 mm) Clevis Pin = 311/4" (794 mm)
1" (25.4 mm) Clevis Pin = 31
3 Add A, B, E, F, G and subtract from total pin-to-pin length.
SUM = _________
4 Choose the number from foil multiplier below closest to,
but not greater than, sum from step 3. Fill in D length.
*7 x 84 = 588 **7 x 2133.6 = 14935.2
8 x 84 = 672 8 x 2133.6 = 17068.8
9 x 84 = 756 9 x 2133.6 = 19202.4
10 x 84 = 840 10 x 2133.6 = 21336.0
11 x 84 = 924 11 x 2133.6 = 23469.6
12 x 84 = 1008 12 x 2133.6 = 25603.2
5 Add A, B, D, E, F, G.
Subtract from pin-to-pin length for C (top foil length).
/2" (63.5 mm) of adjustment
3
/4" (806 mm)
WORKSHEET: DETERMINE TOP FOIL LENGTH
DIMENSIONS INCHES MM
A Center of PIN to Bottom of Terminal _____ _____
B †Bottom of Terminal to Top of Foil 3.5 89
C Top Foil _____ _____
Foils below 19" (483 mm) see next page
D __?__ 84" (2133.6 mm) Foils *_____ **_____
(Quantity)
E Feeder Gap 3 76
F Bottom Foil 24 610
G Clevis Pin to Foil _____ _____
Total Pin-to-Pin Length _____ _____
†With Swage Eye: Bottom of the Terminal is the point where foils jam
on the eye. The top foil will ride on shoulder when in use.
BEFORE CUTTING SEE NEXT PAGE.
8 Hydraulic 3/3.25 April 2000
Preparation Short Top Foil/Connector and Foil Quantity/Cutting Top Foil
■ IF YOU HAVE A SHORT TOP FOIL
If top foil is:
Less than 15" (381 mm) with Norseman, Sta-Lok or rod eye;
Less than 19" (483 mm) with a swage marine eye.
Refer to Charts below.
TIP: With longer top foils, a 10" (254 mm) recessed top
connector is used as a bushing for the halyard swivel.
This is a problem with shorter top foils. Do not use this
10" (254 mm) top bushing with short top foil lengths.
Swage Eye: Recess the top connector 3 - 6" (76 - 150 mm)
to allow the top of the foil to ride on the shoulder of the
marine eye.
TOP FOIL - OPTION 1
LINE C (pg. 8) LINE C (pg. 8) TOP FOIL
Norseman, Sta-lok Swage Eye CUT LENGTH
or Rod Eye
1" (25 mm) 1" (25 mm) 8.5" (220 mm)
2" (51 mm) 2" (51 mm) 9.5" (241 mm)
3" (76 mm) 3" (76 mm) 10.5" (267 mm)
4" (102 mm) 4" (102 mm) 11.5" (292 mm)
5" (127 mm) 12.5" (318 mm)
6" (152 mm) 13.5" (343 mm)
7" (178 mm) 14.5" (368 mm)
TOP FOIL - OPTION 2
LINE C (pg. 8) LINE C (pg. 8) TOP FOIL
Norseman, Sta-lok Swage Eye CUT LENGTH
or Rod Eye
5" (127 mm) 5" (127 mm)
6" (152 mm) 6" (152 mm)
7" (178 mm) 7" (178 mm)
8" (203 mm) 8" (203 mm)
9" (229 mm) 9" (229 mm)
10" (254 mm) 10" (254 mm)
11" (279 mm) 11" (279 mm)
TOP FOIL - OPTION 3
LINE C (pg. 8) LINE C (pg. 8) TOP FOIL
Norseman, Sta-lok Swage Eye CUT LENGTH
or Rod Eye
8" (203 mm) 15.5" (394 mm)
9" (229 mm) 16.5" (419 mm)
10" (254 mm) 17.5" (445 mm)
11" (279 mm) 18.5" (470 mm)
12" (305 mm) 12" (305 mm) 19.5" (495 mm)
13" (330 mm) 13" (330 mm) 20.5" (521 mm)
14" (356 mm) 14" (356 mm) 21.5" (546 mm)
15" (381 mm) 22.5" (572 mm)
16" (406 mm) 23.5" (597 mm)
17" (432 mm) 24.5" (622 mm)
18" (457 mm) 25.5" (648 mm)
■ CONNECTOR & FOIL QUANTITY
Refer to the Top Foil Length Worksheet.
Unit 3/3.25 requires the same number of regular connectors
as the number of foils. (Exception: OPTION A/B = Use one
fewer regular connector than foils.) In addition, a trim cap
and long bottom connector are required.
■ CUTTING TOP FOIL
Once you have checked the top foil length, cut the top foil.
Deburr and clean all shavings from the foil.
Important: Failure to deburr or clean the inside of the foil
may cause it to seize to a connector when installing on rod.
Rough up the top 1" (25 mm) of the foil using a file or
sandpaper.
April 2000 Hydraulic 3/3.25 9
Assembly Foils
■ ASSEMBLE FOIL
Slide trim cap and one connector to top of headstay.
TIP: When working with rod, tape connectors in place or
use a pusher wire longer than foil to hold connectors.
Note: Slide only trim cap to top of stay if:
1 Top foil is less than 19" (483 mm) for swage
eye installation.
2 Top foil is less than 15" (381 mm) for Norseman,
Sta-Lok or rod eye installation.
Slide top foil to top of stay, screw holes toward the bottom.
®
Coat the connector with red Loctite
.
Place a wedge in the indentation with the circular mold
mark towards the connector.
If working with a swage eye, push the connector into the
top foil until it is recessed about 5 or 6" (127 or 152 mm).
If working with a Norseman, Sta-Lok or rod eye, push
the connector into the top foil until it is recessed about
1
/2" (13 mm).
Use super bonder to glue the trim cap to the roughened
foil top.
Slide the next connector to the top of the stay.
Coat half of the connector and the indentation with
®
red Loctite
.
Place a plastic connector wedge in the indentation
closest to the top foil.
10 Hydraulic 3/3.25 April 2000
Assembly Foils
®
Coat three foil screws with red Loctite
Screw them into connector until tight.
Continue assembly.
Slide halyard swivel onto foil, tall end up.
.
®
Install feeder screws toward bottom, using blue Loctite
on screws.
Sta-Lok®: For easier installation, push the bottom foil completely
over the bottom connector to expose as much wire as possible.
Slide torque tube onto foils.
April 2000 Hydraulic 3/3.25 11
Assembly Attach Stay—Rod Unit 3
■ ATTACHING STAY TO LOWER UNIT—ROD UNIT 3
Use a winch handle to crank the terminal completely out
of lower unit.
Make sure halyard swivel and torque tube have been slipped
®
on foils. Then apply a few drops of red Loctite
to threads of
nosepiece.
Screw nosepiece onto terminal until flats align with two
cotter pin holes in terminal body.
TIP: The flats will align with the holes when the threads of
the nosepiece are flush with the top of the terminal body.
Slowly turn the nosepiece while easing a cotter pin into
the hole. The cotter pin will slip through the terminal when
the holes align with the flats. Insert the two cotter pins and
spread.
Clean excess Loctite
®
from terminal body using special care
to insure that no red Loctite
®
is present on threaded stud.
12 Hydraulic 3/3.25 April 2000
Assembly Attach Stay—Rod Unit 3.25
■ ATTACHING STAY TO LOWER UNIT - ROD UNIT 3.25
Use a winch handle to crank the terminal completely out of
the lower unit.
Make sure halyard swivel and torque tube have been slipped
on the foils.
Slip the rod adapter main body onto the rod.
Sandwich the nosepiece over the rod and insert into the main
body, narrow end first. Jiggle the main body or use a small
screwdriver to push the nosepiece completely into main
body.
Put several drops of the blue Loctite
of the stud. Thread the stud into the main body until the
®
on the large threads
slot aligns neatly with the hole in the main body.
TIP: Sight through the pin hole to find the optimum thread
engagement. Make sure the stud is threaded far enough so
the pin is securely seated in the slot, yet not threaded too
far to block the pin.
Hammer the pin into the main body.
®
Clean excess Loctite
care to insure that no Loctite
from the terminal body using special
®
is present on the lower threaded
stud.
April 2000 Hydraulic 3/3.25 13
Assembly Attach Stay—Wire
■ ATTACHING STAY TO LOWER UNIT — WIRE
Assemble wire terminal per Sta-lok instructions.
Note: To prevent seizing nosepiece threads when forming
wires, put red Loctite
Open terminal up for inspection. Put sealant inside terminal.
®
on the threads to lubricate them.
Use a winch handle to crank the terminal completely out of
the lower unit.
®
Apply red Loctite
to the stud or the socket of wire terminal.
Thread the hydraulic unit onto the Sta-Lok terminal and wire.
Protect stainless steel housing and sideplates from scratching
when rotating unit. Use saw horses that are padded and have
terry cloth covering.
TIP: Lift the lower unit by the tack swivel shackle and lower
end of unit. Spin lower unit into Sta-Lok terminal.
Put red Loctite
®
on the pin and drive it into place.
Clean excess Loctite® from the terminal body using
special care to insure that no Loctite® is present on
the lower threaded stud.
14 Hydraulic 3/3.25 April 2000
Assembly Lower Toggle and Cowling
■ INSTALL LOWER TOGGLE AND COWLING
The integral toggle can be installed so the clevis pin runs
either fore/aft or athwartships.
Choose the correct hole in the base and use the cross pin to
secure the lower toggle so clevis pin runs the correct direction.
Slip the cowling in place.
Secure using the circlip provided.
April 2000 Hydraulic 3/3.25 15
Assembly Install Torque Tube
■ INSTALL THE TORQUE TUBE
Secure the torque tube to the lower unit using the six
®
cap screws provided. Use blue Loctite
on the screws.
TIP: Insert all six screws BEFORE tightening.
■ RAISE FOILS
Push the foils to the correct height.
Use an allen wrench to secure the torque tube to the foils
using the two screws provided.
®
Use blue Loctite
on the screws.
16 Hydraulic 3/3.25 April 2000
Assembly Foil Length Check
■ CHECK FOIL LENGTH
Once the foils and lower unit are assembled, use a winch
handle to close the stay adjuster. Turn the handle in a
clockwise direction.
Check the clearance between the top of the foil and top
terminal.
TIP: Check clearance when the unit is on the ground,
before raising the headstay into position.
WARNING!: It is critical to have clearance
between top foil and top rigging fitting when stay
adjuster is in fully closed position. If fittings touch,
unit will jam or in the case of a Sta-Lok fitting,
terminal may unscrew. This could cause a catastrophic spar failure which may cause an accident,
damage to your vessel, personal injury or death. See
www.harken.com for additional safety information.
NOTE: A swage eye terminal will be recessed into the top foil.
Check to make sure the top of the foil is not jammed on the
“eye” of the marine eye.
It is the responsibility of the rigger to check clearance.
CORRECT INCORRECT
7/17/08 Hydraulic 3/3.25 17
Assembly Raise Furling Unit/Gearbox Pressure
■ RAISE FURLING UNIT ON MAST
CAUTION!: To prevent damage to the stay adjuster,
make sure the torque tube is secured to foils and
lower unit before moving unit.
If the unit will sit for a long time, make sure the port side of
the lower unit is facing up.
TIP: The sideplate with the winch handle socket will be
facing down.
Once you have closed the stay adjuster to confirm there
is clearance above the foils, open the adjuster all the way.
Turn the stay adjuster counter-clockwise to open the adjuster
completely. This makes it easier to connect the stay to the boat.
TIP: Cover unit with terry cloth & padding to protect
stainless finish.
■ GEARBOX PRESSURE
It is possible that pressure has built up in the gear box
during shipping.
Once the unit is in sailing position, relieve pressure by
using a 6mm allen wrench to open the filler valve on
top of the lower unit.
Install the cap so it is wrist tight (20 foot pounds).
18 Hydraulic 3/3.25 7/17/08
Assembly Install Hoses/Gear Oil Level/Headstay Tension
■ INSTALL HOSES
Use hose end fittings which are:
Drive: JIC 9/16-18 female swivel
Drain: JIC 7/16-20 female swivel
Do not use locking solution or tape on connections.
Alternate Method: Remove furling unit end fittings and
use SAE straight thread O-ring male hose end fittings.
■ CHECK GEAR OIL LEVEL
CAUTION!: Do not overfill gear oil as this will
cause leaking from the breather valve which
may cause damage to your vessel.
Oil can be checked from top of case. Insert a small metal
stick into filler hole at top of gear housing.
Oil should be at bottom of gears. When unit is in angled
sailing position, oil level will be 2" (51 mm) from top
of housing.
■ ADJUST HEADSTAY TENSION
There is no need to unlock turnbuckle. If sail is up, make
sure halyard is loose.
Do not adjust under sail.
Insert winch handle and rotate counter clockwise to loosen
or clockwise to tighten stay. Total adjustment is 5" (127mm).
CAUTION!: When tightening the stay, if handle
becomes suddenly hard to turn, stop immediately.
Forcing handle when adjuster is completely closed
will damage gears.
All final rig tensioning or spar bending should be done
using a conventional backstay adjuster.
7/17/08 Hydraulic 3/3.25 19
Adjustments Halyard Wraps/Prevent Halyard Wraps
■ HALYARD WRAPS
The most serious problem with furling systems occurs when the jib
halyard wraps around the headstay foil. Halyard wraps will prevent
furling or unfurling and may cause serious damage to the unit and the
halyard. In severe cases, halyard wraps may cause headstay loss.
To prevent wraps, the halyard must exert a slight pull to the rear.
This allows the foils to turn while the halyard remains stationary.
WARNING!: In severe cases, a halyard wrap can cause loss of
control of boat and/or headstay can break suddenly which can
cause an accident, damage to your vessel, personal injury or
death. See www.harken.com for additional safety information.
■ PREVENT WRAPS
WARNING!: Sail must be fitted to foil length before using to
prevent a halyard wrap which could lead to headstay breakage
causing an accident, damage to your vessel, personal injury or
death. See www.harken.com for additional safety information.
1 Halyard swivel should be within the top 4" (100 mm)
of the foil.
8 - 10°
2 Halyard must pull slightly to the rear (8 - 10°).
3 Halyard must be snug, but not too tight.
TIP: With the sail raised, walk away from the boat and look at the
masthead with binoculars. Use the halyard swivel as a measurement
reference. 4" (100 mm) is /3 the length of the swivel. There should be
less foil exposed above the swivel than 1/3 of the swivel.
If a halyard wraps, do not force the unit to turn. Attempt to open the
sail by alternately furling in and out slightly.
If the sail can be unfurled, lower the sail by releasing the jib halyard.
Severe halyard wraps can only be cleared by going aloft and freeing
the halyard.
If the sail will not furl or unfurl, it may be possible to remove the jib sheets
and manually wrap the sail around the headstay.
Remember: Testing at the dock does not indicate the halyard angle is
correct. In wave action, the halyard may wrap if the lead angle is not
correct. The 8-10° diverging angle mentioned above is critical.
20 Hydraulic 3/3.25 7/17/08
Adjustments Pendant/Halyard Restrainer
■ PENDANTS
If your sail is not long enough to position the halyard swivel
properly, you must add a pendant to the sail. Pendants
should be plastic coated wire permanently attached to the
sail so the height will be correct. Adjustable length pendants
are not acceptable as they might not be adjusted correctly
during a sail change.
■ INSTALL A PENDANT
1 Raise the sail, but do not attach tack shackle.
2 Position the halyard swivel correctly near the top of
the headstay and secure the halyard.
3 Secure a piece of rope to the sail tack. Lead the line
through the tack shackle on the furling drum and
tension the sail.
4 Measure the distance from the tack shackle to the
sail tack and have a pendant of this length permanently
attached to the head of the sail.
5 Repeat this procedure for every jib.
TIP: Pendants are used at the head of the sail. Short
pendants may be added at the tack to improve visibility
under the genoa, but remember that visibility is already
improved by shackling to the tack swivel. Tack pendants
increase heeling moment by raising the sailplan. You may
install pendants at both the head and tack of the sail.
■ HALYARD RESTRAINER
To prevent wraps, jib halyard must pull slightly to rear. On
some boats halyard sheaves are located too close to headstay
and a halyard restrainer must be used.
Use halyard restrainers only when required by masthead
geometry. Restrainers tend to limit sail luff length and may
cause problems if not properly installed.
Mount restrainer as high as possible on face of mast.
Position restrainer so foils will not hit it when under load.
The restrainer should deflect halyard 8 - 10°.
CAUTION!: If halyard angle is more than 10°, you
may experience difficulty in tensioning sail luff,
friction in furling and possible damage to foils.
To decrease deflection angles, shorten sail luff.
8 - 10°
10/07/08 Hydraulic 3/3.25 21
Adjustments Halyard Tension/Backstay Tension
■ HALYARD TENSION
The jib halyard should be firm, but not too tight.
TIP: The luff foil system supports the sail along its entire
length so halyard tension is required only to shape sails,
not to support them. Use only enough halyard tension to
remove some wrinkles along the luff. Do not tension the
halyard enough to cause vertical wrinkles in the luff. Use
halyard tension to adjust draft position of the sail to suit
sailing conditions. Your halyard should be firm but not
tight. If in doubt, release halyard tension. To protect the
sail, ease the halyard when the boat is not in use.
■ BACKSTAY TENSION
Good stay tension helps furlers turn more easily. Make sure
to ease jib halyard before tightening backstay to prevent
damage to furler.
CAUTION!: Tensioning backstay without easing
halyard will cause halyard to tighten excessively
causting damage to halyard swivel and tack swivel.
22 Hydraulic 3/3.25 10/15/08
Adjustments Before Operation/Manual Operation
■ BEFORE OPERATION
WARNING!: Before operating, consult pages on
halyard lead angle. If sails are changed, make
sure halyard lead angle is correct. A halyard wrap
cannot be tolerated on a hydraulic furler In severe
cases, a halyard wrap can cause loss of control of
boat and/or headstay can break suddenly which can
cause an accident, damage to your vessel, personal
injury or death. See www.harken.com for additional
safety information.
Make sure to ease sheets before operating the system.
CAUTION!: Do not use hydraulic furler to sheet sail.
The direction of furling is up to the individual. Make sure
suncover is rolled correctly.
TIP: Label buttons “in” and “out” and be consistent in their
use when rolling and unrolling sail. This way, it will be
possible to furl in tdesired direction at night when sail
is hard to see.
■ MANUAL OPERATION
To furl or unfurl the unit manually, push the lever to manual
and insert a winch handle in the starboard socket. Rotate to
move the sail in or out.
TIP: Use a short 8" (200 mm) handle to increase furling
speed furling.
7/17/08 Hydraulic 3/3.25 23
Corporate Headquarters
1251 East Wisconsin Avenue, Pewaukee, Wisconsin 53072 USA
Telephone: (262) 691-3320
Web: www.harken.com
• Fax: (262) 691-3008 • Cable: Harken Pewaukee
• Online Catalog: www.harkenstore.com
Email: harken@harken.com
Harken France
ZA. Port des Minimes, BP 3064, 17032 - La Rochelle Cedex 1, France
Telephone: (33) 05.46.44.51.20
Web: www.harken.fr
• Fax: (33) 05.46.44.25.70
Email: harken@harken.fr
Harken Italy S.P.A.
Via Marco Biagi, 14, 22070 Limido Comasco, (CO), Italy
Telephone: (39) 031.3523511
Web: www.harken.it
• Fax: (39) 031.3520031
Email: info@harken.it
Harken UK Ltd.
Bearing House, Ampress Lane
Lymington, Hampshire S041 8LW, England
Telephone: (44) 01590-689122
• Fax: (44) 01590-610274
Web: www.harken.co.uk
Email: enquiries@harken.co.uk
Harken Poland
ul. Lisa Kuli 4 lok.1, 01-512 Warszawa, Polska
Telephone: 022 561 93 93
Web:
www.harken.com
Email:
polska@harken.com
• Fax: 022 839 22 75
Harken Sweden
Mjölkekilsgatan 6, Box 64
S-440 30 Marstrand, Sweden
Telephone: (46) 303-618 75
Web: www.harken.se
• Fax: (46) 303-618 76
Email: harken@harken.se
Harken Adriatik d.o.o.
Obala 107
6320 Portoroz, Slovenia
Telephone
Web: www.harken.si
/Fax: 5-6774122
Email: info@harken.si
Harken Australia, Pty, Ltd.
1B Green Street
Brookvale, N.S.W. 2100, Australia
Telephone: (61) 2-8978-8666
Web: www.harken.com.au
• Fax: (61) 2-8978-8667
Email: info.harken.com.au
Harken New Zealand, Ltd.
30-36 Fanshawe Street
Auckland 1001, New Zealand
Telephone: (64) 9-303-3744
Web: www.harken.co.nz
• Fax: (64) 9-307-7987
Email: harken@harken.co.nz
Please visit: http://www.harken.com/dealers/dealers.php
for an up-to-date list of Harken dealers and distributors
Printed in USA 4902/10-08
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