J/105 Owner Guide
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11
Mast
-‐ Rigging the J/105 mast is a common procedure, and best handled by a qualified marine
rigger. All spreaders, shrouds, and halyards are installed and properly taped and secured. Be sure
all mast related electronics and wind indicators are properly wired and installed prior to
stepping the mast. After stepping the mast it is VERY IMPORTANT to properly brace the mast
within the mast collar PRIOR to sailing with the provided Pre-‐Molded Spartite mast wedge. We
also recommend that a small cord is tied and taped approx. 24” above the lower spreader
between the intermediate shroud and upper shroud if you plan to sail with any type of spinnaker.
Simply tie this line to each shroud (allowing for some slack) and tape ends over with rigging tape.
This prevents the spinnaker (during a take-‐down) from potentially dropping into the V that is
formed at the lower spreader between these shrouds.
Hydraulic Backstay
-‐ The J/105 is equipped with an integral hydraulic backstay to help you fine
tune your rig and sails for optimum performance. This hydraulic unit is simple to operate, easy
to maintain, and highly reliable. The cylinder is affixed to the backstay tang on the transom and
to the backstay. In order to attach the backstay, you must pull out the SS shaft and fully extend it.
Boom
-‐ Run the reef lines so the red line (port) is led through the port sheaves and the green line
(starboard) is led through the starboard sheaves at both the outboard end and the gooseneck.
The starboard reef doubles as the cunningham.
Boom Vang
-‐ The standard boom vang is a mechanically operated spring loaded boom vang with a
block and tackle purchase system. This vang system allows for quick and easy adjustment and
also acts as a boom topping lift. The vang is affixed to the vang plate welded underneath the
boom and to the mast at the vang gooseneck located just above the mast collar. See the vang
operating instructions for how to adjust the internal spring for best results.
Sail Control Systems
After stepping the mast and connecting the boom, vang, roller-‐furler, and integral backstay, rig all
halyards and the remaining sail control systems on deck.
Main Halyard
-‐ exits the mast on the port side, runs through a turning block at the mast collar,
through the inboard port organizer block and then aft through the port double stopper (inboard
hole) and finally to the halyard winch. The tail end is stored in the supplied line bag to be
mounted outboard and forward of the stopper.
Jib Halyard
-‐ exits the mast to port, leads through the forward mast base block, aft to the outboard
sheave on the organizer block, through the outboard stopper hole, and store tail in line bag.
Spinnaker Halyard
-‐ exits the mast to starboard and leads to the outboard sheave and stopper.
Mainsheet Traveler
-‐ is a Harken low friction system. The 3:1 purchase system on each side
controls a Harken Windward Sheeting Car mounted on midrange track (see diagram).
Outhaul
-‐ is adjusted at the cleat on the underside of the boom and comes pre-‐assembled.
Cunningham
-‐ The cunningham doubles as the starboard reef line. To set it up as a cunningham
simply tie a knot at the boom end tail of the reef line. The line leads forward to the sheave at the
gooseneck, up to the cunningham block/hook back down through a bullseye on the mast, down
to the mast base block and aft to the inboard stopper.(see diagram). To use the continuous reef
Summary of Contents for 105
Page 1: ......
Page 2: ...J 105 Owner Guide 2 J 105 Owner Manual HIN Yacht Name Owner Name COPYRIGHT J BOATS INC 2012...
Page 16: ...J 105 Owner Guide 16 Diagrams Layouts Schematics Running Rigging Deck Hardware Layout...
Page 17: ...J 105 Owner Guide 17 Mainsheet Cunningham Diagram...
Page 18: ...J 105 Owner Guide 18 Steering System...
Page 19: ...J 105 Owner Guide 19 Fuel Exhaust System...
Page 20: ...J 105 Owner Guide 20 Thru Hull Seacock Locations...
Page 21: ...J 105 Owner Guide 21 Manual Fresh Water System...
Page 22: ...J 105 Owner Guide 22 Head Holding Tank Schematic...
Page 23: ...J 105 Owner Guide 23 12V DC Layout...
Page 24: ...J 105 Owner Guide 24 Battery Wiring System...
Page 25: ...J 105 Owner Guide 25 Lightning Bonding System...