{"title":"Harken Mast Base and Over-the-Top Blocks — Instructions","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v1.css?v=1790893904\"\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eINSTRUCTIONS\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eThe original Harken instructions for the Mast Base and Over-the-Top Blocks, with every part in it that we carry, matched by Harken part number.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-doc\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eInstructions\u003c\/b\u003e\u003csmall\u003ePDF · 2 pages · 0.3 MB\u003c\/small\u003e\n\u003c\/div\u003e\n\u003ca class=\"om-btn dl\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Harken-Mast-Base-and-Over-the-Top-Blocks-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDownload PDF\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ca class=\"om-btn buy\" href=\"\/products\/har3123\"\u003eBuy\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\/HAR3123.jpg?v=1747147769\" alt=\"Mast Base and Over-the-Top Blocks\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"om-h\"\u003eParts in this Manual We Carry\u003c\/h2\u003e\n\u003cp\u003eHarken part numbers as printed in the instructions, matched to the genuine parts in our store.\u003c\/p\u003e\n\u003cdiv class=\"om-tbl\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eHarken part no.\u003c\/th\u003e\n\u003cth\u003eOur part\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3123\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har3123\"\u003eBlock - Fixed Mast Base Leads 102mm - Mast Base\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3192\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har3192\"\u003eBlock - Fixed Mast Base Leads 102mm - Mast Base (Wide)\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3002\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har3002\"\u003eBlock - Over-the-Top 57mm Single\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3003\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har3003\"\u003eBlock - Over-the-Top 57mm Double\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3004\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har3004\"\u003eBlock - Over-the-Top 57mm Triple\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har1988\"\u003eBlock - Fixed Mast Base Leads 57mm - Mast Base\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/har1990\"\u003eBlock - Fixed Mast Base Leads 76mm - Mast Base\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\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":"har1988","title":"Harken Block - Fixed Mast Base Leads 57mm - Mast Base","description":"\u003cp\u003eThe Harken Block - Fixed Mast Base Leads 57mm - Mast Base #1988 is a fantastic addition for any sailor looking to maximize efficiency at the mastbase. It's designed to be compact and lightweight, making it easy to group together with other blocks without taking up too much space. You'll appreciate the precision and reliability this harken block offers.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eBenefits\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eLow-profile design for minimal space usage\u003c\/li\u003e \u003cli\u003eLightweight construction for easy handling\u003c\/li\u003e \u003cli\u003eIdeal for grouping multiple blocks at the mastbase\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eConstructed with durability in mind, this block features a 57mm sheave, perfect for managing halyards and control lines efficiently. It's compatible with a variety of sailing setups, ensuring versatility across different mast configurations.\u003c\/p\u003e \u003cp\u003e Our Part # HAR1988 | Mfr. Part # 1988 \u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016290079026,"sku":"HAR1988","price":241.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR1988.jpg?v=1747147728"},{"product_id":"har1990","title":"Harken Block - Fixed Mast Base Leads 76mm - Mast Base","description":"\u003cp\u003eLow-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.\u003c\/p\u003e\u003cp\u003e Our Part # HAR1990 | Mfr. Part # 1990\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016290406706,"sku":"HAR1990","price":371.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR1990.jpg?v=1747147728"},{"product_id":"har3002","title":"Harken Block - Over-the-Top 57mm Single","description":"\u003cp\u003eThe Over-the-Top 57mm Single #3002 is perfect for guiding lines aft over various obstacles on your boat, like cabin houses and splashguards. This handy piece of sailing equipment ensures smooth operation with its reliable construction. It's designed to make your time on the water more enjoyable and efficient.\u003c\/p\u003e \u003cp\u003e\u003cb\u003e Benefits\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e \u003cli\u003eEfficient line management for sailing applications\u003c\/li\u003e \u003cli\u003eDesigned to fit over cabin houses, coamings, and splashguards\u003c\/li\u003e \u003cli\u003eSturdy and durable construction for long-lasting use\u003c\/li\u003e \u003cli\u003eEasy to install and use\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eCrafted from high-quality materials, this lead block is designed for durability and optimal performance. The 57mm sheave ensures smooth line handling, ideal for sailors needing reliable gear. Compatible with a variety of line types, this block is a versatile addition to any sailing setup.\u003c\/p\u003e \u003cb\u003eUsage\u003c\/b\u003e \u003cp\u003eBest used in setups where lines need to be guided aft over structures like cabin houses and splashguards, making it an essential tool for efficient sailing operations.\u003c\/p\u003e \u003cp\u003e Our Part # HAR3002 | Mfr. Part # 3002 \u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016302203186,"sku":"HAR3002","price":241.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR3002.jpg?v=1747147765"},{"product_id":"har3003","title":"Harken Block - Over-the-Top 57mm Double","description":"\u003cp\u003eOver-the-top blocks lead lines aft over cabin houses, coamings, and splashguards.\u003c\/p\u003e\u003cp\u003e Our Part # HAR3003 | Mfr. Part # 3003\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016302268722,"sku":"HAR3003","price":483.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR3003.jpg?v=1747147765"},{"product_id":"har3004","title":"Harken Block - Over-the-Top 57mm Triple","description":"\u003cp\u003eOver-the-top blocks lead lines aft over cabin houses, coamings, and splashguards.\u003c\/p\u003e\u003cp\u003e Our Part # HAR3004 | Mfr. Part # 3004\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016302301490,"sku":"HAR3004","price":703.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR3004.jpg?v=1747147765"},{"product_id":"har3123","title":"Harken Block - Fixed Mast Base Leads 102mm - Mast Base","description":"\u003cp\u003eLow-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.\u003c\/p\u003e\u003cp\u003e Our Part # HAR3123 | Mfr. Part # 3123\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016303317298,"sku":"HAR3123","price":582.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR3123.jpg?v=1747147769"},{"product_id":"har3192","title":"Harken Block - Fixed Mast Base Leads 102mm - Mast Base (Wide)","description":"\u003cp\u003e\u003cb\u003e102mm Fixed Mastbase Halyard Lead\u003c\/b\u003e\u003c\/p\u003e\n \n \u003cp\u003eLow-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Flared cheeks prevent chafe on the halyards. The high-load bearing system has a PTFE composite bushing and sideload balls. The sheave is hardcoat-anodized aluminum for additional strength.\u003c\/p\u003e\u003cp\u003e Our Part # HAR3192 | Mfr. Part # 3192\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":50016304464178,"sku":"HAR3192","price":812.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/HAR3192.png?v=1747147772"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/HAR3123.jpg?v=1790894639","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-harken-mast-base-and-over-the-top-blocks.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}