ProFurl MK0, Installation Manual

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MK 0
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III 7 - MEASURING AND FITTING THE UPPER (CUT) LUFF PROFILE
III 7 a - Accurately measure the length« A to D », D being the upper edge of the articulation
bracket. Please see drawing 8.
III 7 b - Mark the « A to D » length on the remaining luff profile (2) and cut it at this exact
length. File smooth the cut edge .
Note : in case you have a fractional rig or a very flexible mast, please cut upper profile at
A/D minus 5 mm (13/64”), but keep the sheave box at the same position, thus giving 5
mm play between “A” and the upper edge of the cut profile.
III 7 c - Fit without tightening the 2 set screws (9) on the threads located at the opposite
side of the cut end.
III 7 d - Assemble the cut luff profile onto the next to last 2 m profile (2).
III 8 - FITTING THE UPPER (CUT) LUFF PROFILE ONTO THE SHEAVE BOX
III 8 a - Completely insert the striped aluminium bar of the sheave box (11) into the upper
cut end of the luff profile (2).
III 8 b - Insert the bottom end of the luff profile (2) into the next lower connector/articulation
(4).
III 8 c - Fit again the sheave box (11) onto/between both end brackets (6) and fit and fasten
the 4 slides screws (7) to permanently secure this assembly.
III 8 d - Tighten the set screws (9) at the bottom end of the cut luff profile (2).
III 8 e - Follow the path for the mainsail halyard as shown on drawing 8.
Drawing 8