{"title":"Selden Backstay Tensioner — Owner's Manual","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eOWNER'S MANUAL\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eTechnical data, stay-load table, fitting, seasonal lubrication and the complete spare parts list for the Selden 174-601 mechanical backstay tensioner (250 and 400 mm stroke) and its halyard version.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eSelden Backstay Tensioner Owner's Manual\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 4 pages · 0.3 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\n\u003cdetails class=\"om-dd\"\u003e\u003csummary class=\"om-btn dl\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF ▾\u003c\/summary\u003e\u003cdiv class=\"om-dd-menu\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Backstay-Tensioner-174-601-Manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eOwner's Manual\u003c\/span\u003e\u003csmall\u003ePDF · 4 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Backstay-Halyard-Tensioner-174-601-Spare-Parts-List.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eSpare parts list (backstay \u0026amp; halyard tensioner)\u003c\/span\u003e\u003csmall\u003ePDF · 2 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003ca class=\"om-btn buy\" href=\"\/products\/selden-backstay-tensioner518-768mm\"\u003eBuy\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-specs\"\u003eSpecifications\u003c\/a\u003e\u003ca href=\"#om-load\"\u003eStay Loads\u003c\/a\u003e\u003ca href=\"#om-install\"\u003eFitting\u003c\/a\u003e\u003ca href=\"#om-maint\"\u003eMaintenance\u003c\/a\u003e\u003ca href=\"#om-spares\"\u003eSpare Parts\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL174-601-01.jpg?v=1787758776\" alt=\"Selden Backstay Tensioner — Owner's Manual\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-specs\"\u003e\n\u003ch2 class=\"om-h\"\u003eProduct \u0026amp; Technical Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical tensioner for stays of 6–8 mm (10 mm under conditions below). A winch-handle bevel gear drives a bronze nut on an acid-resistant stainless threaded pull-rod connected to the backstay; the pull-rod cannot rotate (square bronze block in a square tube).\u003c\/li\u003e\n\u003cli\u003eA safety device locks the tensioner after adjustment; you feel it as an irregularity every 3\/4 of a turn.\u003c\/li\u003e\n\u003cli\u003eGear housing and tubes in anodised, salt-water resistant aluminium alloy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-601-01 (60005)\u003c\/td\u003e\n\u003ctd\u003e250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-601-02 (60006)\u003c\/td\u003e\n\u003ctd\u003e400 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-601-03\u003c\/td\u003e\n\u003ctd\u003eHalyard tensioner version (lower fork turned 90°)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum working load\u003c\/td\u003e\n\u003ctd\u003e30 000 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking load\u003c\/td\u003e\n\u003ctd\u003e65 000 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003e10 mm backstays\u003c\/b\u003e only if fore- and backstay are 10 mm 19-strand acid-resistant wire (or stay material with breaking strength of 88 kN or less) and the backstay-to-mast angle is at least 40 % greater than the forestay-to-mast angle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-load\"\u003e\n\u003ch2 class=\"om-h\"\u003eChecking the Stay Force\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe forestay usually makes a smaller angle to the mast (approx. 17°) than the backstay (approx. 24°), so forestay force is 30-40% greater (factor = sine of backstay angle \/ sine of forestay angle).\u003c\/li\u003e\n\u003cli\u003eContinuous static load (boat not in use) should not exceed 20% of the wire breaking load; maximum static 40%. Wind and sea add roughly 25% maximum dynamic load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWire Ø mm\u003c\/th\u003e\n\u003cth\u003eBreaking load (N)\u003c\/th\u003e\n\u003cth\u003eForestay contin. (N)\u003c\/th\u003e\n\u003cth\u003eForestay max. (N)\u003c\/th\u003e\n\u003cth\u003eBackstay contin. (N)\u003c\/th\u003e\n\u003cth\u003eBackstay max. (N)\u003c\/th\u003e\n\u003cth\u003eHandle force contin. (N)\u003c\/th\u003e\n\u003cth\u003eHandle force max. (N)\u003c\/th\u003e\n\u003cth\u003eElongation d contin.\u003c\/th\u003e\n\u003cth\u003eElongation d max.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e32000\u003c\/td\u003e\n\u003ctd\u003e6400\u003c\/td\u003e\n\u003ctd\u003e12800\u003c\/td\u003e\n\u003ctd\u003e4600\u003c\/td\u003e\n\u003ctd\u003e9200\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003ctd\u003e2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e43000\u003c\/td\u003e\n\u003ctd\u003e8600\u003c\/td\u003e\n\u003ctd\u003e17200\u003c\/td\u003e\n\u003ctd\u003e6200\u003c\/td\u003e\n\u003ctd\u003e12400\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003ctd\u003e2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e56000\u003c\/td\u003e\n\u003ctd\u003e11200\u003c\/td\u003e\n\u003ctd\u003e22400\u003c\/td\u003e\n\u003ctd\u003e8100\u003c\/td\u003e\n\u003ctd\u003e16200\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e65\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003ctd\u003e2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e88000\u003c\/td\u003e\n\u003ctd\u003e17600\u003c\/td\u003e\n\u003ctd\u003e35200\u003c\/td\u003e\n\u003ctd\u003e12720\u003c\/td\u003e\n\u003ctd\u003e25400\u003c\/td\u003e\n\u003ctd\u003e47\u003c\/td\u003e\n\u003ctd\u003e102\u003c\/td\u003e\n\u003ctd\u003e1.4\u003c\/td\u003e\n\u003ctd\u003e2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eBackstay values use factor 1.4; measurements relate to 19-strand acid-resistant wire. Conversion: 10N = 1kp \/ 1kg \/ 2,25lb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMeasuring by elongation:\u003c\/b\u003e clamp a measuring rod L = 1000 mm to the wire with a measuring stop approx. 250 mm, set d = 0 on the untensioned stay, tension and read d with a slide calliper. For 19-strand wire d = 1 mm corresponds to 10% of the breaking load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-install\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eA. Cutting the Backstay\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eCheck fore-and-aft rake and adjust if desired.\u003c\/li\u003e\n\u003cli\u003eSlacken the backstay rigging screw until fore- and backstay are slack.\u003c\/li\u003e\n\u003cli\u003eRemove the upper tube by pressing in the locking pin at its bottom edge; keep the loose parts safe.\u003c\/li\u003e\n\u003cli\u003eWind the tensioner fully out (whole stroke, 250 mm or 400 mm).\u003c\/li\u003e\n\u003cli\u003eLay it along the backstay with the lower pin level with the chain plate hole and mark the upper pin position on the wire.\u003c\/li\u003e\n\u003cli\u003eSecure the mast aft with the main halyard.\u003c\/li\u003e\n\u003cli\u003eHave a new swaged terminal fitted at the mark, or fit a swageless eye (Sta-lok or Norseman type) without removing the stay.\u003c\/li\u003e\n\u003cli\u003eRefit the shortened backstay.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eB. Fitting the Tensioner\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWire\u003c\/th\u003e\n\u003cth\u003eClevis pin set\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ 6 mm\u003c\/td\u003e\n\u003ctd\u003eMin. Ø 11 mm clevis pin + bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ 7 mm\u003c\/td\u003e\n\u003ctd\u003eMin. Ø 13 mm clevis pin + bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ 8 \u0026amp; 10 mm\u003c\/td\u003e\n\u003ctd\u003eMin. Ø 15.8 mm clevis pin (fitted when supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003col\u003e\n\u003cli\u003eUse the largest clevis pin \/ hole combination the chain plate and end fitting allow; attach the tensioner to the chain plate.\u003c\/li\u003e\n\u003cli\u003eRemove the black conical bushing halves from the upper tube, thread the stay through (bushing end up) and connect it.\u003c\/li\u003e\n\u003cli\u003eLower the tube onto the gear housing, place the bushing halves round the stay and press them in until the snap-fastener engages.\u003c\/li\u003e\n\u003cli\u003eTension to the maximum value and mark the wire (paint or tape) at the top edge of the black bushing. Never go past this mark.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"om-note\"\u003eContinuous tension slowly deforms GRP hulls and tension drops; check the mark at the start of each season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-maint\"\u003e\n\u003ch2 class=\"om-h\"\u003eMaintenance \u0026amp; Halyard Use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eOnce a season:\u003c\/b\u003e remove the lubricating screw on the side of the gear housing and press in grease while rotating, to reach the axial bearing and gears. Then release the upper tube, slide it up, grease the pull-rod threads and rotate so grease enters the crank chamber; refit the tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTurning the lower fork 90°\u003c\/b\u003e (e.g. as a halyard tensioner): remove the lower tube (two screws), open the crank chamber (six screws), withdraw the fork, turn it 90°, refit and reassemble.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-spares\"\u003e\n\u003ch2 class=\"om-h\"\u003eSpare Parts (595-303-E)\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-601\u003c\/td\u003e\n\u003ctd\u003eGearbox half (in kit 174-618-01 only)\u003c\/td\u003e\n\u003ctd\u003e150x104x36\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-618\u003c\/td\u003e\n\u003ctd\u003eGearbox half (in kit 174-618-01 only)\u003c\/td\u003e\n\u003ctd\u003e150x104x36\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-604\u003c\/td\u003e\n\u003ctd\u003eTension screw, 174-601-01\u003c\/td\u003e\n\u003ctd\u003eØ 16-425\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-634\u003c\/td\u003e\n\u003ctd\u003eTension screw, 174-601-02\/-03\u003c\/td\u003e\n\u003ctd\u003eØ 16-575\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-602\u003c\/td\u003e\n\u003ctd\u003eDrag link, 174-601-01\u003c\/td\u003e\n\u003ctd\u003e30x30-360\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-632\u003c\/td\u003e\n\u003ctd\u003eDrag link, 174-601-02\/-03\u003c\/td\u003e\n\u003ctd\u003e30x30-660\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e320-007\u003c\/td\u003e\n\u003ctd\u003eBevel gear (in kit 320-007-01)\u003c\/td\u003e\n\u003ctd\u003eØ 60x54\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e320-008\u003c\/td\u003e\n\u003ctd\u003eBevel gear (in kit 320-007-01)\u003c\/td\u003e\n\u003ctd\u003eØ 45x58\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-605\u003c\/td\u003e\n\u003ctd\u003eGuide bush\u003c\/td\u003e\n\u003ctd\u003e30x30x45\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-606\u003c\/td\u003e\n\u003ctd\u003eGuide bush\u003c\/td\u003e\n\u003ctd\u003e26x26x30\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-607\u003c\/td\u003e\n\u003ctd\u003eStopper\u003c\/td\u003e\n\u003ctd\u003e25X25x20\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-603\u003c\/td\u003e\n\u003ctd\u003eFork\u003c\/td\u003e\n\u003ctd\u003eØ 30x86\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-610\u003c\/td\u003e\n\u003ctd\u003eTube, 174-601-01\u003c\/td\u003e\n\u003ctd\u003eØ 50\/46-250\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-630\u003c\/td\u003e\n\u003ctd\u003eTube, 174-601-02\/-03\u003c\/td\u003e\n\u003ctd\u003eØ 50\/46-550\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-611\u003c\/td\u003e\n\u003ctd\u003eTube, 174-601-01\u003c\/td\u003e\n\u003ctd\u003eØ 50\/46-510\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-631\u003c\/td\u003e\n\u003ctd\u003eTube, 174-601-02\/-03\u003c\/td\u003e\n\u003ctd\u003eØ 50\/46-660\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-608\u003c\/td\u003e\n\u003ctd\u003eBush\u003c\/td\u003e\n\u003ctd\u003eØ 45\/30-20\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-612\u003c\/td\u003e\n\u003ctd\u003eBearing (in kit 174-612-01)\u003c\/td\u003e\n\u003ctd\u003eAXK 3552\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-615\u003c\/td\u003e\n\u003ctd\u003eWasher (2; in kit 174-612-01)\u003c\/td\u003e\n\u003ctd\u003eLS 3552\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-617\u003c\/td\u003e\n\u003ctd\u003eLip seal (in kit 174-612-01)\u003c\/td\u003e\n\u003ctd\u003e30x40x4\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-609\u003c\/td\u003e\n\u003ctd\u003ePlug half (2)\u003c\/td\u003e\n\u003ctd\u003eØ 51x38\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e153-001\u003c\/td\u003e\n\u003ctd\u003eScrew (6)\u003c\/td\u003e\n\u003ctd\u003eM6x20\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e162-051\u003c\/td\u003e\n\u003ctd\u003eScrew (2)\u003c\/td\u003e\n\u003ctd\u003eM5x8\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e158-011\u003c\/td\u003e\n\u003ctd\u003eNyloc nut (6)\u003c\/td\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e158-004\u003c\/td\u003e\n\u003ctd\u003eNyloc nut (2)\u003c\/td\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e166-534\u003c\/td\u003e\n\u003ctd\u003eSpring pin\u003c\/td\u003e\n\u003ctd\u003eØ 5x40\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e166-533\u003c\/td\u003e\n\u003ctd\u003eSpring pin (in kit 320-007-01)\u003c\/td\u003e\n\u003ctd\u003eØ 5x24\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-620\u003c\/td\u003e\n\u003ctd\u003eLocking knob\u003c\/td\u003e\n\u003ctd\u003eØ 7x13\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e308-012\u003c\/td\u003e\n\u003ctd\u003eSpring\u003c\/td\u003e\n\u003ctd\u003eØ 1.0\/DY7.5\/L12\/N4.5\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e168-021\u003c\/td\u003e\n\u003ctd\u003eClevis pin (2)\u003c\/td\u003e\n\u003ctd\u003eØ 15.8X38(HF)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-clevis-pin-o15-8x38hf-st\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e306-561\u003c\/td\u003e\n\u003ctd\u003eFlange bush (in kit 174-612-01)\u003c\/td\u003e\n\u003ctd\u003eØ 45\/37\/30-30\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e308-023\u003c\/td\u003e\n\u003ctd\u003eSpring\u003c\/td\u003e\n\u003ctd\u003eØ 6x13\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e539-128\u003c\/td\u003e\n\u003ctd\u003eBall\u003c\/td\u003e\n\u003ctd\u003eØ 8\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e319-582\u003c\/td\u003e\n\u003ctd\u003ePlug half (2)\u003c\/td\u003e\n\u003ctd\u003eØ 51-60\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e319-681\u003c\/td\u003e\n\u003ctd\u003eScrew mcs\u003c\/td\u003e\n\u003ctd\u003e6x5 (DIN 85)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e301-020\u003c\/td\u003e\n\u003ctd\u003eSplit pin (2)\u003c\/td\u003e\n\u003ctd\u003eØ 3x25 (EQ.LEG)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-split-pin-3-2x25-a4\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e168-019\u003c\/td\u003e\n\u003ctd\u003eClevis pin (2)\u003c\/td\u003e\n\u003ctd\u003eØ 11x40\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-clevis-pin-o11x40-hf-st\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e168-015\u003c\/td\u003e\n\u003ctd\u003eClevis pin (2)\u003c\/td\u003e\n\u003ctd\u003eØ 13x40\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-clevis-pin-13x40-st\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e306-558\u003c\/td\u003e\n\u003ctd\u003eFlange bush (4)\u003c\/td\u003e\n\u003ctd\u003eØ 25\/16\/13-9.5\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-flange-bush-o25-16-13-9-5-st\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3 class=\"om-h3\"\u003eRepair kits\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eKit\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-618-01\u003c\/td\u003e\n\u003ctd\u003eGearbox replace kit\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-gearbox-repl-kit-backst-tens\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e174-612-01\u003c\/td\u003e\n\u003ctd\u003eBearing repair kit\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-bearing-repair-kit-backst-tens\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e320-007-01\u003c\/td\u003e\n\u003ctd\u003eBevel repair kit\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/selden-bevel-gear-repl-kit-b-st-tens\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Backstay-Tensioner-174-601-Exploded-View.png\" alt=\"Selden backstay tensioner 174-601 and halyard tensioner exploded view with item numbers\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[{"product_id":"selden-clevis-pin-13x40-st","title":"Selden Clevis Pin ø13x40 mm, AISI316 Stainless","description":"\u003cp\u003eDiameter: 13.00 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564761809202,"sku":"SEL168-015","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL168-015.jpg?v=1787756315"},{"product_id":"selden-clevis-pin-o11x40-hf-st","title":"Selden Clevis Pin ø11x40 mm, AISI316 Stainless, for Backstay Tensioner","description":"\u003cp\u003eIncluded in backstay tensioners and halyard tensioner Art. No. 174-601-01, 174-601-02 and 174-601-03 Diameter: 11.00 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564762038578,"sku":"SEL168-019","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL168-019.jpg?v=1787756337"},{"product_id":"selden-clevis-pin-o15-8x38hf-st","title":"Selden Clevis Pin ø15,8x38 mm, AISI316 Stainless, for Backstay Tensioner","description":"\u003cp\u003eIncluded in backstay tensioners and halyard tensioner Art. No. 174-601-01, 174-601-02 and 174-601-03 Diameter: 15.80 mm Imperial diam: 5\/8\" inch Length: 8 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564762530098,"sku":"SEL168-021","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL168-021.jpg?v=1787756348"},{"product_id":"selden-backstay-tensioner518-768mm","title":"Selden Backstay TENSIONER(518\/768mm)","description":"\u003cp\u003eSeldén backstay tensioners have smooth, clean surfaces. Even the wire terminal is fully covered. These low-weight backstay tensioners are simple to use. All you do is insert a standard winch handle and turn. The tensioner has a maximum working load of 30 kN. The stroke with this tensioner of standard length is 250 mm Clevis pins and bushes are supplied with every adjuster to suit small chainplates for Ø 6 and Ø 7 mm wire\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564808241458,"sku":"SEL174-601-01","price":1460.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL174-601-01.jpg?v=1787758776"},{"product_id":"selden-backstay-tensioner818-1218mm","title":"Selden Backstay TENSIONER(818\/1218MM)","description":"\u003cp\u003eSeldén backstay tensioners have smooth, clean surfaces. Even the wire terminal is fully covered. These low-weight backstay tensioners are simple to use. All you do is insert a standard winch handle and turn. The tensioner has a maximum working load of 30 kN. The stroke for this tensioner is 400 mm Clevis pins and bushes are supplied with every adjuster to suit small chainplates for Ø 6 and Ø 7 mm wire\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564808601906,"sku":"SEL174-601-02","price":1690.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL174-601-02.jpg?v=1787758789"},{"product_id":"selden-tensioner818-1218mmpins-90º","title":"Selden TENSIONER(818\/1218mm)pins 90º","description":null,"brand":"Selden","offers":[{"title":"Default Title","offer_id":51564808634674,"sku":"SEL174-601-03","price":1530.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL174-601-03.jpg?v=1787758800"},{"product_id":"selden-bearing-repair-kit-backst-tens","title":"Selden Bearing Repair Kit, Backstay\/Halyard Tensioner 174-601","description":"\u003cp\u003eIncludes Bearing (174-612), 2 washer (174-615), flange bush (306-561) and lip seal (174-617) Spareparts list\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564810502450,"sku":"SEL174-612-01","price":52.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL174-612-01.jpg?v=1787758811"},{"product_id":"selden-gearbox-repl-kit-backst-tens","title":"Selden Gearbox Halves - Replacement Kit for Backstay\/Halyard Tensioner 174-601","description":"\u003cp\u003eSpareparts list https:\/\/support.seldenmast.com\/files\/1669648602\/595-303-E.pdf\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564810862898,"sku":"SEL174-618-01","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/174-618-01.jpg?v=1786462992"},{"product_id":"selden-split-pin-3-2x25-a4","title":"Selden Split Pin ø3,2x25 A4 Stainless","description":"\u003cp\u003eSplit pins must be 1.5 x the diameter of the clevis pins in length, and the legs must be bent min. 2x10˚ to lock them. If opened up more than this, they are difficult to remove. Split pins that have been opened more than 10 times must be replaced All split pins should be protected with fabric tape. A spinnaker or gennaker can easily be torn by a sharp split pin end, and running rigging can get hooked in a split pin. This will damage the split pin and could pull it out of the clevis pin, allowing the clevis pin to fall out of the associated fitting\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564823576882,"sku":"SEL301-020","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL301-020.jpg?v=1787761020"},{"product_id":"selden-flange-bush-o25-16-13-9-5-st","title":"Selden FLANGE BUSH ø25\/16\/13-9.5 ST","description":null,"brand":"Selden","offers":[{"title":"Default Title","offer_id":51564838584626,"sku":"SEL306-558","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL306-558.jpg?v=1787762055"},{"product_id":"selden-bevel-gear-repl-kit-b-st-tens","title":"Selden Bevel Gear Replacement Kit for Backstay Tensioner","description":"\u003cp\u003eSpare bevel gear for Seldén backstay tensioners 174-601-01\/-02 and halyard tensioner 174-601-03\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564867649842,"sku":"SEL320-007-01","price":201.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/320-007-01.jpg?v=1786463677"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/SEL174-601-01.jpg?v=1792517710","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-selden-backstay-tensioner.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}