Harken 430 User Manual
SINGLE LINE MAINSAIL REEFING SYSTEM
430
(For boats 22 - 27 ft (6 - 8 m) with mainsails under 150 ft
Installation Manual – Intended for specialized personnel or expert users
2
(14 m2)
4171 12/13
Reef Mainsail with One Line
Easy to Install
Reef From Cockpit in Seconds
Use with Regular or Full-Length Battens
Track Allows Easy Adjustment of Block for Best Sail Shape
No Modification to Sails with Reef Points
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
Parts (Included) Drill/Tap Sets You Must Supply
Clew Track Assembly
1 HSB60 Clew Slider Assembly
1 H-24294C Track
1 833 Blue Loctite® (Threadlocker 242)
6 HFS566 5/16-18 x 3/4” Flathead Screws (1 Extra)
6 HFS841 M8 x 1.25 x 20 mm Flathead Screws (1 Extra)
Mid-Boom Fairlead
1 137 Eyestrap
3 HFS104 #10-32 x 3/8” Trusshead Screws (1 Extra)
3 HFS842 M5 x .80 x 10 mm Panhead Screws (1 Extra)
3 HFS125 #10 x 3/8” Self-Tapping Panhead Screws (1 Extra)
Mast Mounted Tack Block Assembly
1 168 Big Bullet Block/071 Spring/137 Eyestrap
2 HFS104 10-32 x 3/8” Trusshead Screws
2 HFS842 M5 x .80 x 10 mm Panhead Screws
2 HFS125 #10 X 3/8” Self-Tapping Panhead Screws
Mast Mounted Bullseye
1 H-24675A Bullseye
3 HFS259 10-32 x 11/4” Roundhead Screws (1 Extra)
3 HFS843 M5 x .80 x 30 mm Panhead Screws (1 Extra)
3 HFS840 #10 x 11/4” Self-Tapping Screws (1 Extra)
Deck Blocks
1 132 Big Bullet Cheek Block
1 168 Big Bullet Block/071 Spring/137 Eyestrap
5 HFS106 10-32 x 1-1/2” Roundhead Screws (1 Extra)
5 HFS110 10-32 18-8 Nuts (1 Extra)
5 HFS111 Washer (1 Extra)
5 HFS112 Lockwasher (1 Extra)
Tools You Must Supply
Electric Drill
Drill Bits
Screwdrivers
Slotted
Phillips
Wrench – 3/8” (9.5 mm) or Adjustable
Hammer
Center Punch
Pencil or Fine Point Marker
US Drill Bits
5/32” for 10-32 Tap Set and for Self-Tapping #10 Screws
13/64” for Deck Clearance Holes for #10 Screws*
17/64” for 5/16-18 Tap Set
*Used for mounting mast base block to deck, not used if shackling to mast
collar. Also used for deflector block, not used if using deck organizer.
US Tap Sets
10-32 optional - you can also use self-tapping screws
5/16-18 required for mounting track
Metric Drill Bits
4 mm
for 10-32 Self-Tapping Screws
5 mm for Deck Clearance Holes for #10 Screws*
4.2 mm for 5 x .80 mm Tap Set (Optional)
6.8 mm for 8 x 1.25 mm Tap Set
*Used for mounting mast base block to deck, not used if shackling to mast
collar. Also used for deflector block, not used if using deck organizer.
Metric Tap Sets
5 x .80 mm
8 x 1.25 mm
Optional-you can also use self-tapping screws
Required for mounting track
Parts You Must Supply
• Reefing line – 5/16” (8mm) double braided Dacron
line. Use formula below to calculate length.
• Cleat or stopper to secure reefing line.
• High quality marine sealant for mounting deck
hardware.
• Back-up plate or large diameter washers for
backing up deck hardware screws.
• Topping lift.
• For most effective reefing, the main halyard
should be led back to the cockpit.
• Feeder cover plates for grooved spar so sail
slugs can pass mast feeder gap. See the bottom
of page 7.
Figuring Line Length
1 Reef height X 5 ................. ____________
2 Sail foot length X 2.............. ____________
3 Add 7 feet (2.2 m) ..............+ 7 feet (2.2 m)
Total length of reefing line.......... ____________
Sail Work
In most cases your mainsail needs no alteration. Check
to make sure your sail is fitted with tack and clew reef
grommets. Intermediate reef points are used
as required.
2
Step 1 Mounting Track on Boom
General Instructions Detailed Instructions
A. Decide whether to place the system on the port or
starboard side of the boom.
B. Mount track at the aft end of the boom.
A. Each boat is different. Choose the best side by deter-
mining if you have room on the boom and where the
line will lead on the cabin house. Remember, the line
runs down the opposite side of the mast as the track is
mounted to the boom. If the track is on starboard, the
line will run down the port side of the cabin top. You
will need 19” (483 mm) on the aft end of the boom to
mount the track.
Installation Tip – Plan the Location of All Hardware
Before Installation
Look at the mast area to see if the tack block and bullseye will
fit easily. Look at the mast base area. Is there a good spot for
mounting the mast base block? Where is the main halyard cleat?
If possible, locate the single line cleat near the halyard cleat in
easy reach of the cockpit.
B. Place the track so the front edge is behind the aft
mainsail reefing grommet. If the boom is not long
enough for this, position the track as far aft as
possible.
Carefully mark the holes, drill, tap and mount track.
See tips below.
US Metric
Drill
Tap
5 Screws
(Use Blue Loctite on Screws)
Installation Tip – Lining Up Holes with Track
If holes in boom do not line up with track holes, it will be very
difficult to install screws. After marking each hole, drill and tap
the forward hole and use a screw to secure the track. Use a center punch to start the other holes. If any dimples do not line up,
relocate them before drilling holes. Loosen screw and let track
pivot out of the way and drill the other holes. Do not drill holes
through track; remove track before drilling.
Installation Tip – Drilling
Hold the drill perpendicular to the face of the boom. Do not angle
the drill or it will be very difficult to install the screws flush with
the track.
3
17/64” 6.8 mm
5/16-18 8 x 1.25 mm
5/16 -18 x 3/4”
Flathead Machine Screws
Flathead Machine Screws
(Use Blue Loctite on Screws)
8 x 1.25 x 20 mm
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