Harken 1851 User Manual
I N S T R U C T I O N S H E E T
1851, 1852, 1899 Staysail Furlers
1251 East Wisconsin Avenue • Pewaukee, WI 53072 U.S.A.
Telephone: (262) 691-3320 • Fax: (262) 691-3008
Web: http://www.harken.com • E-mail: harken@harken.com
Strictly follow all instructions to avoid an accident, damage to your vessel, personal
injury or death. See www.harken.com for additional safety information.
Using Harken Staysail Furler
A Staysail furler makes it easy to set or strike a staysail because sail goes up and down wrapped in
a tight roll. It's easy to test the effectiveness of a staysail in marginal conditions because the crew
can set or remove sail without leaving their normal positions —they simply roll or unroll sail.
A furler makes it easier to jibe. The staysail can be rolled and dropped on deck. After boat is jibed,
the halyard can be cleared and the sail reset.
A Harken staysail furling system is designed to be left attached to sail. Store staysail by “coiling"
loosely before bagging. We suggest sheets and furling lines of different colors to minimize
confusion when setting sail.
Choosing a Staysail Furling System
Part
No.
1851
1852
1899
Maximum LP is determined by amount of line that can be wrapped on drum. If
your luff length is under 50' (15.25 m) but your LP is over 131/2' (4 m), use 1852.
If your luff length is under 80' (24 m) but your LP is over 28' (8.5 m), use 1899.
Maximum Luff Length Maximum LP
ft m ft m
50 15.25 131/2 4
70 21.33 20 6
80 24 28 8.5
Sail Modifications
Sail must be fitted with a special luff wire or rope designed for furling. This wire or rope must
transmit torque of furling unit to head of sail. Your sailmaker may need to shorten sail luff slightly to
accommodate length of drum and swivel. Some sailmakers add Velcro® to clew of sail to hold it in a
tight roll during storage.
Determine Furling Line Length
Part
No.
1851
1852
1899
Use amount shown in chart plus enough line to lead to where crew will be stationed. If you plan to
operate unit from close by add 5' (1.5 m) of line. If you plan to have a crew member furl from the
rail you may need to add 15' (4.5 m) of line or more.
Line Length (See Below) Line Ø
ft m in mm
10 10 5/32 4
25 7.6 1/4" 6
35 10.7 5/16 8
Attach Line and Install Furler
To attach line, pass it through cleat and fairlead into drum and out through hole in drum cap. Tie an
overhand knot in line to secure it. “Charge" drum by turning it clockwise to wrap line on drum then
attach drum to unfurled staysail.
Cam cleats are mounted on a wedge. Remove wedge if you prefer cam at a flatter angle to deck.
Attach staysail furling system to a padeye or slider car which has bail oriented in a fore and aft
direction so cleat faces aft.
Use only enough halyard tension to hold luff straight. Excess halyard tension makes furling more
difficult and may damage unit.
Dimensions
1851 1852 1899
in mm in mm in mm
A
Swivel Length 39/16 90 57/16 138 61/4 159
B
Drum Length 41/2 114 67/16 164 71/2 191
C
Pin Ø
D
Jaw Width
E
Throat Clearance
F
Halyard Shackle Opening
G
Shackle
1
/4 6
5
/16 8
1
/4 6
9
/16 14 1 25 1 25
13
/16 21 11/16 27 11/8 29
5
/16 8
3
/8 10
7
/16 11
7
/16 11
7
/16 11
3
/4 19
Maintenance
Harken equipment requires minimal maintenance, but some is required to give the best service and to comply
with Harken's limited warranty.
It is important to keep equipment clean by frequent flushing with fresh water. In corrosive atmospheres, stainless
parts may show discoloration around holes, rivets and screws. This is not serious and may be removed with a
fine abrasive.
Keep furling units clean by flushing frequently with fresh water. Periodically clean lower unit and halyard
swivel with detergent and freshwater to remove deposits of salt and dirt. Lubrication is not required, but
lubricants such as McLube®, which will not attract dirt, may be used.
Important: Exposure to some teak cleaners and other caustic solutions can result in discoloration of part
and is not covered under the Harken warranty.
Warranty
For additional safety, maintenance and warranty information see www.harken.com or the Harken® catalog.
Printed in USA 4439/7-08
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