{"title":"Max-Prop Classic Generation 2 (3 \u0026 4 Blade) — Instruction 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\"\u003eINSTALLATION MANUAL\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eInstalling the Max-Prop Classic Generation 2 (3 \u0026amp; 4 blade): key fit, greasing, setting pitch and rotation on the forward hub scale, feathering, removal, nut fitting (standard and anti-shock) and maintenance.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eMax-Prop Classic Generation 2 (3 \u0026amp; 4 Blade) Instruction Manual\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 12 pages · 1.4 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\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\/Max-Prop-Classic-Generation-2-Instruction-Manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eInstallation Manual\u003c\/span\u003e\u003csmall\u003ePDF · 12 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Max-Prop-Classic-Generation-2-3-Blade-Pitch-Adjustment.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ePitch adjustment (3 blade, illustrated steps)\u003c\/span\u003e\u003csmall\u003ePDF · 5 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-install\"\u003eInstallation\u003c\/a\u003e\u003ca href=\"#om-pitch\"\u003ePitch \u0026amp; Rotation\u003c\/a\u003e\u003ca href=\"#om-use\"\u003ePropeller Use\u003c\/a\u003e\u003ca href=\"#om-service\"\u003eService\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\/Max-Prop-Classic-Generation-2-Instruction-Manual-Cover.png\" alt=\"Max-Prop Classic Generation 2 (3 \u0026amp; 4 Blade) — Instruction Manual\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-install\"\u003e\n\u003ch2 class=\"om-h\"\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Max-Prop-Classic-Generation-2-Exploded-View.png\" alt=\"Max-Prop Classic Generation 2 exploded view: shaft, key, prop, nut, nut screws, zinc and zinc screws\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eSupplied assembled for right or left rotation, with the pitch set at order if it was discussed. Parts are NOT interchangeable: with more than one propeller, never swap parts.\u003c\/li\u003e\u003c\/ul\u003e\n\u003col\u003e\n\u003cli\u003eFit the propeller onto the shaft like a fixed propeller. A properly fitted key has almost no side clearance and a very small clearance on top, so a key that is too tall cannot push the propeller off centre.\u003c\/li\u003e\n\u003cli\u003eTighten the nut and secure it with the two Allen head screws.\u003c\/li\u003e\n\u003cli\u003eFill the propeller with the supplied marine grease through the holes marked \"GREASE\" using the supplied grease fitting (illustrated steps 1 to 9 in the PDF). The central body must be completely full, with grease oozing from the rotating joints between the central part and the hub. Use only a grease approved by Max-Prop, which stays fluid for years and does not stiffen in cold water.\u003c\/li\u003e\n\u003cli\u003eMove the blades into the feathered position with the rounded trailing edges aft (Fig. 4).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eBefore Launching\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHold the propeller shaft and check that the blades rotate freely from forward to reverse with a light effort.\u003c\/li\u003e\n\u003cli\u003eIn the feathered position the blades must be perfectly lined up.\u003c\/li\u003e\n\u003cli\u003eConfirm the propeller body is full of grease.\u003c\/li\u003e\n\u003cli\u003eProtect the propeller from galvanic corrosion with sacrificial anodes on the propeller and on the shaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-pitch\"\u003e\n\u003ch2 class=\"om-h\"\u003ePitch \u0026amp; Rotation\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBlade angle\u003c\/th\u003e\n\u003cth\u003e12\"\u003c\/th\u003e\n\u003cth\u003e13\"\u003c\/th\u003e\n\u003cth\u003e14\"\u003c\/th\u003e\n\u003cth\u003e15\"\u003c\/th\u003e\n\u003cth\u003e16\"\u003c\/th\u003e\n\u003cth\u003e17\"\u003c\/th\u003e\n\u003cth\u003e18\"\u003c\/th\u003e\n\u003cth\u003e19\"\u003c\/th\u003e\n\u003cth\u003e20\"\u003c\/th\u003e\n\u003cth\u003e21\"\u003c\/th\u003e\n\u003cth\u003e22\"\u003c\/th\u003e\n\u003cth\u003e23\"\u003c\/th\u003e\n\u003cth\u003e24\"\u003c\/th\u003e\n\u003cth\u003e25\"\u003c\/th\u003e\n\u003cth\u003e26\"\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10°\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4.3\u003c\/td\u003e\n\u003ctd\u003e4.6\u003c\/td\u003e\n\u003ctd\u003e4.9\u003c\/td\u003e\n\u003ctd\u003e5.2\u003c\/td\u003e\n\u003ctd\u003e5.5\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e6.3\u003c\/td\u003e\n\u003ctd\u003e6.7\u003c\/td\u003e\n\u003ctd\u003e7.1\u003c\/td\u003e\n\u003ctd\u003e7.4\u003c\/td\u003e\n\u003ctd\u003e7.7\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e8.3\u003c\/td\u003e\n\u003ctd\u003e8.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12°\u003c\/td\u003e\n\u003ctd\u003e4.8\u003c\/td\u003e\n\u003ctd\u003e5.2\u003c\/td\u003e\n\u003ctd\u003e5.6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e6.4\u003c\/td\u003e\n\u003ctd\u003e6.8\u003c\/td\u003e\n\u003ctd\u003e7.2\u003c\/td\u003e\n\u003ctd\u003e7.6\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e8.4\u003c\/td\u003e\n\u003ctd\u003e8.8\u003c\/td\u003e\n\u003ctd\u003e9.2\u003c\/td\u003e\n\u003ctd\u003e9.6\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e10.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14°\u003c\/td\u003e\n\u003ctd\u003e5.6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e6.6\u003c\/td\u003e\n\u003ctd\u003e7.1\u003c\/td\u003e\n\u003ctd\u003e7.6\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e8.4\u003c\/td\u003e\n\u003ctd\u003e8.8\u003c\/td\u003e\n\u003ctd\u003e9.4\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e10.4\u003c\/td\u003e\n\u003ctd\u003e10.8\u003c\/td\u003e\n\u003ctd\u003e11.2\u003c\/td\u003e\n\u003ctd\u003e11.6\u003c\/td\u003e\n\u003ctd\u003e12.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16°\u003c\/td\u003e\n\u003ctd\u003e6.4\u003c\/td\u003e\n\u003ctd\u003e6.9\u003c\/td\u003e\n\u003ctd\u003e7.6\u003c\/td\u003e\n\u003ctd\u003e8.1\u003c\/td\u003e\n\u003ctd\u003e8.6\u003c\/td\u003e\n\u003ctd\u003e9.1\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e10.3\u003c\/td\u003e\n\u003ctd\u003e10.8\u003c\/td\u003e\n\u003ctd\u003e11.3\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e12.5\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e13.5\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18°\u003c\/td\u003e\n\u003ctd\u003e7.2\u003c\/td\u003e\n\u003ctd\u003e7.8\u003c\/td\u003e\n\u003ctd\u003e8.6\u003c\/td\u003e\n\u003ctd\u003e9.2\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e10.4\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e11.5\u003c\/td\u003e\n\u003ctd\u003e12.1\u003c\/td\u003e\n\u003ctd\u003e12.8\u003c\/td\u003e\n\u003ctd\u003e13.4\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e14.6\u003c\/td\u003e\n\u003ctd\u003e15.2\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20°\u003c\/td\u003e\n\u003ctd\u003e8.2\u003c\/td\u003e\n\u003ctd\u003e8.9\u003c\/td\u003e\n\u003ctd\u003e9.6\u003c\/td\u003e\n\u003ctd\u003e10.3\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e11.6\u003c\/td\u003e\n\u003ctd\u003e12.4\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e13.7\u003c\/td\u003e\n\u003ctd\u003e14.5\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e15.6\u003c\/td\u003e\n\u003ctd\u003e16.4\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e17.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e22°\u003c\/td\u003e\n\u003ctd\u003e9.2\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e10.7\u003c\/td\u003e\n\u003ctd\u003e11.4\u003c\/td\u003e\n\u003ctd\u003e12.2\u003c\/td\u003e\n\u003ctd\u003e12.9\u003c\/td\u003e\n\u003ctd\u003e13.6\u003c\/td\u003e\n\u003ctd\u003e14.3\u003c\/td\u003e\n\u003ctd\u003e15.1\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e16.8\u003c\/td\u003e\n\u003ctd\u003e17.5\u003c\/td\u003e\n\u003ctd\u003e18.2\u003c\/td\u003e\n\u003ctd\u003e18.9\u003c\/td\u003e\n\u003ctd\u003e19.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24°\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e10.9\u003c\/td\u003e\n\u003ctd\u003e11.8\u003c\/td\u003e\n\u003ctd\u003e12.5\u003c\/td\u003e\n\u003ctd\u003e13.4\u003c\/td\u003e\n\u003ctd\u003e14.2\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e15.8\u003c\/td\u003e\n\u003ctd\u003e16.8\u003c\/td\u003e\n\u003ctd\u003e17.6\u003c\/td\u003e\n\u003ctd\u003e18.4\u003c\/td\u003e\n\u003ctd\u003e19.2\u003c\/td\u003e\n\u003ctd\u003e20.2\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e21.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e26°\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e12.8\u003c\/td\u003e\n\u003ctd\u003e13.8\u003c\/td\u003e\n\u003ctd\u003e14.7\u003c\/td\u003e\n\u003ctd\u003e15.7\u003c\/td\u003e\n\u003ctd\u003e16.6\u003c\/td\u003e\n\u003ctd\u003e17.4\u003c\/td\u003e\n\u003ctd\u003e18.4\u003c\/td\u003e\n\u003ctd\u003e19.3\u003c\/td\u003e\n\u003ctd\u003e20.2\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e22.9\u003c\/td\u003e\n\u003ctd\u003e23.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e28°\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e13.9\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e18.9\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30°\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e15.1\u003c\/td\u003e\n\u003ctd\u003e16.2\u003c\/td\u003e\n\u003ctd\u003e17.3\u003c\/td\u003e\n\u003ctd\u003e18.5\u003c\/td\u003e\n\u003ctd\u003e19.6\u003c\/td\u003e\n\u003ctd\u003e20.6\u003c\/td\u003e\n\u003ctd\u003e21.7\u003c\/td\u003e\n\u003ctd\u003e22.8\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e26.1\u003c\/td\u003e\n\u003ctd\u003e27.3\u003c\/td\u003e\n\u003ctd\u003e28.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eFig. 1: pitch in inches for each blade angle (rows) and propeller diameter (columns). Size diameter and pitch as for a fixed propeller, find your diameter column, go down to the pitch you need and read the blade angle across.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIf the engine does not reach the desired RPM, reduce the blade angle; if it exceeds it, increase the blade angle.\u003c\/li\u003e\n\u003cli\u003eBlade angle changes in 1 degree increments, about 7 % engine RPM per degree at the same boat speed.\u003c\/li\u003e\n\u003cli\u003eRotation is judged from the stern looking forward with the engine in forward: clockwise = right hand \"R\", counterclockwise = left hand \"L\".\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChanging Pitch or Rotation\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRotate the blades to the feathered position.\u003c\/li\u003e\n\u003cli\u003eUnscrew the zinc screws and remove the zinc.\u003c\/li\u003e\n\u003cli\u003eUnscrew the nut locking screws and remove the nut.\u003c\/li\u003e\n\u003cli\u003eWith circlip pliers, remove the circlip inside the aft hub ring, then take off the aft hub ring (the part that carries the zinc).\u003c\/li\u003e\n\u003cli\u003ePull the body (blades stay with it) 2-3 cm aft to open a gap from the forward hub. Rotate it to line up the reference mark on the forward hub with the rotation and blade angle you want (the manual's example: 18° R rotation, or 22° L rotation).\u003c\/li\u003e\n\u003cli\u003eSlide the body forward to engage fully on the forward hub, keeping the mark lined up, and make sure the blades are perfectly feathered.\u003c\/li\u003e\n\u003cli\u003eRefit the aft hub ring with its reference dot lined up on the RIGHT or LEFT scale stamped on the body.\u003c\/li\u003e\n\u003cli\u003eRefit the circlip, tighten the nut and secure it with the locking screws, and refit the zinc with its 3 screws.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"om-note\"\u003eThe extra download shows the same pitch adjustment as illustrated steps for the 3 blade propeller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-use\"\u003e\n\u003ch2 class=\"om-h\"\u003ePropeller Use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe propeller works automatically: put the transmission in gear and the blades engage in forward or reverse; they feather from the forward position when you stop the engine and lock the shaft.\u003c\/li\u003e\n\u003cli\u003eBest way to feather: power at 2 to 3 knots in forward, then kill the engine while still engaged in forward. A properly greased propeller feathers in a fraction of a second once the shaft stops freewheeling.\u003c\/li\u003e\n\u003cli\u003eDo NOT kill the engine in reverse: the blades stay in the reverse position and cannot feather. You can use this to drive a shaft alternator.\u003c\/li\u003e\n\u003cli\u003eMechanical transmission: stop the shaft freewheeling by engaging reverse, only after the engine has stopped completely.\u003c\/li\u003e\n\u003cli\u003eHydraulic transmission: shut off the engine while still engaged in forward; the remaining hydraulic pressure locks the shaft for a few moments, enough for the propeller to feather.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"om-note\"\u003eNever shift between forward and reverse at high RPM. Idle down and shift at low RPM, or the shock load can damage the teeth of the blade gears and cone gear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-service\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eMaintenance \u0026amp; Removal\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe propeller must always be completely filled with the recommended grease and greased at least once a year.\u003c\/li\u003e\n\u003cli\u003eKeep the zinc anodes in good condition and replace them at least once a year, even if they still look OK. Use a zinc on the shaft as well when possible.\u003c\/li\u003e\n\u003cli\u003eWhen replacing a zinc, clean the contact surfaces so it has good electrical contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRemove the zinc and the nut, then fit a long-armed gear puller over the front of the propeller. Tightening the puller's centre bolt releases the propeller from the shaft. If the puller bolt is too short to reach the shaft end inside the propeller, loosen the nut and leave it in place: the puller bolt then pushes against the back of the nut.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eShaft Nut Fitting\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLocked on the shaft, the nut must contact the three surfaces S1, S2 and S3. On a newly machined nut, lengths L1 and L2 must coincide precisely with the corresponding lengths of the hub, and L3 must be greater than the threaded end of the shaft.\u003c\/li\u003e\n\u003cli\u003eCheck: spread a very thin coat of Prussian blue on S1, S2 and S3, seat the nut in the hub and rotate it softly with light pressure; all three hub surfaces must come out blue.\u003c\/li\u003e\n\u003cli\u003eWhen fitting, the threaded part of the shaft must not touch the threaded end of the nut, and the blades must not get hard to rotate once the nut is tight. If they do, remove a very small amount of material from S1 with a flat smooth file.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecial nut, anti-shock propellers only (Fig. 8)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnlike the standard nut, it must bear ONLY on surfaces S1 and S2.\u003c\/li\u003e\n\u003cli\u003eIt is secured by 4 devices: 2 threaded pins and a central screw with a dowel.\u003c\/li\u003e\n\u003cli\u003eCheck it on the shaft the same way as the standard nut.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\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":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/Max-Prop-Classic-Generation-2-Instruction-Manual-Cover.png?v=1792708788","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-max-prop-classic-generation-2.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}