{"product_id":"pto-clutch-1-631645","title":"1-631645 \/ 1-633099 PTO Clutch for Exmark Lazer Z | Warner 5218-5","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003e1-631645 \/ 1-633099 electric PTO clutch\u003c\/strong\u003e is a replacement for select \u003cstrong\u003eExmark Lazer Z\u003c\/strong\u003e, \u003cstrong\u003eBobcat\u003c\/strong\u003e, \u003cstrong\u003eBunton\u003c\/strong\u003e, \u003cstrong\u003eHusqvarna\u003c\/strong\u003e, \u003cstrong\u003eYazoo\/Kees\u003c\/strong\u003e, and related commercial mower applications using the \u003cstrong\u003eExmark 1-631645\u003c\/strong\u003e, \u003cstrong\u003eHusqvarna 539102603\u003c\/strong\u003e, \u003cstrong\u003eBobcat 2188151\u003c\/strong\u003e, or \u003cstrong\u003eWarner 5218-5\u003c\/strong\u003e clutch path.\u003c\/p\u003e\n\u003cp\u003eCommon replacement-catalog applications include select early \u003cstrong\u003eExmark Lazer Z\u003c\/strong\u003e mowers, \u003cstrong\u003eBobcat ZT200 and ZT331 Series\u003c\/strong\u003e, \u003cstrong\u003eHusqvarna ZTH5223A and ZTH5225A\u003c\/strong\u003e, and several \u003cstrong\u003eYazoo\/Kees ZKH\u003c\/strong\u003e commercial zero-turn mowers.\u003c\/p\u003e\n\u003cp\u003eThe Warner reference path uses a \u003cstrong\u003e1-1\/8-inch keyed crankshaft bore\u003c\/strong\u003e, approximately \u003cstrong\u003e6.31-inch pulley\u003c\/strong\u003e, \u003cstrong\u003eclockwise rotation\u003c\/strong\u003e, reverse-mount configuration, integral electrical connection, and a 12 VDC clutch-and-brake system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant serial-number warning:\u003c\/strong\u003e Exmark used different PTO clutch paths as the Lazer Z platform changed. This page is intended for the earlier \u003cstrong\u003e1-631645 \/ 1-633099 \/ 103-0664\u003c\/strong\u003e path. Do not automatically substitute a clutch listed under \u003cstrong\u003e103-0665\u003c\/strong\u003e, \u003cstrong\u003e1-631732\u003c\/strong\u003e, or \u003cstrong\u003eWarner 5218-213\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket electric PTO clutch assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Exmark Numbers:\u003c\/strong\u003e 1-631645, 1-633099\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Husqvarna Number:\u003c\/strong\u003e 539102603\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Bobcat Number:\u003c\/strong\u003e 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarner Cross-Reference:\u003c\/strong\u003e 5218-5, 52185\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Warner Path:\u003c\/strong\u003e 5218-259, 5218259\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque:\u003c\/strong\u003e 175 ft-lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft Bore:\u003c\/strong\u003e 1-1\/8 inch \/ 1.125 inch with standard keyway\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley Diameter:\u003c\/strong\u003e approximately 6.31 inch \/ 6-5\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e CW viewed from pulley side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e reverse mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e integral electrical connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Groove:\u003c\/strong\u003e A\/B combination replacement path\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Belt Width:\u003c\/strong\u003e 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClutch Type:\u003c\/strong\u003e electric PTO clutch with integrated brake\u003c\/li\u003e\n\u003cli\u003eComplete assembled aftermarket replacement clutch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Brands \u0026amp; Model Series\u003c\/h2\u003e\n\u003cp\u003eThis PTO clutch should be treated as a \u003cstrong\u003epart-number-first replacement\u003c\/strong\u003e. Confirm the number on the original clutch or the serial-specific mower parts diagram before relying on the mower-family name.\u003c\/p\u003e\n\u003ch3\u003eExmark Lazer Z Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExmark Lazer Z:\u003c\/strong\u003e select early-production applications using 1-631645, 1-633099, or 103-0664\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Replacement-Catalog Serial Path:\u003c\/strong\u003e serial numbers through 159,999\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExmark serial warning:\u003c\/strong\u003e Later Lazer Z machines may use the separate \u003cstrong\u003e103-0665 \/ 1-631732 \/ Warner 5218-213\u003c\/strong\u003e clutch path. Match the serial-specific parts diagram rather than assuming every Lazer Z uses the same clutch.\u003c\/p\u003e\n\u003ch3\u003eBobcat, Bob-Cat, Bunton \u0026amp; Ransomes Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBobcat \/ Bob-Cat ZT200 Series:\u003c\/strong\u003e select configurations using 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBobcat \/ Bob-Cat ZT331 Series:\u003c\/strong\u003e select configurations using 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBunton Commercial Mowers:\u003c\/strong\u003e select applications using 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRansomes Commercial Mowers:\u003c\/strong\u003e select applications using 2188151\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBobcat warning:\u003c\/strong\u003e Do not confuse \u003cstrong\u003e2188151\u003c\/strong\u003e with \u003cstrong\u003e2721337\u003c\/strong\u003e. Bobcat 2721337 follows the separate Warner 5218-213 replacement path.\u003c\/p\u003e\n\u003ch3\u003eHusqvarna ZTH Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHusqvarna ZTH5223A:\u003c\/strong\u003e select 2000–2006 applications using 102603 or 539102603\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHusqvarna ZTH5225A:\u003c\/strong\u003e select 2000–2006 applications using 102603 or 539102603\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the complete Husqvarna product number, engine configuration, original clutch number, connector, and pulley alignment. Husqvarna used several similar-looking commercial PTO clutches.\u003c\/p\u003e\n\u003ch3\u003eYazoo\/Kees Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52220\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52221\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52222\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52223\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52233\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52250\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYazoo\/Kees ZKH52251\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse the Yazoo\/Kees model list only when the original clutch or parts diagram identifies 102603, 539102603, or another confirmed number in this replacement path.\u003c\/p\u003e\n\u003ch3\u003eAdditional Part-Number-Based Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerris:\u003c\/strong\u003e select commercial mower applications using 1522040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoods:\u003c\/strong\u003e select applications using 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDixon:\u003c\/strong\u003e select applications using 102603, 109580, 539102603, or 539109580\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAYP-built equipment:\u003c\/strong\u003e select applications using 102603 or 539102603\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCraftsman, Electrolux, Jonsered, Poulan, Roper, and McCulloch:\u003c\/strong\u003e only when the original clutch number matches this path\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eReplaces OEM Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExmark:\u003c\/strong\u003e 631645, 633099, 1-631645, 1-633099, 103-0664, E633099\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToro:\u003c\/strong\u003e 631645, 633099, 1-631645, 1-633099, 103-0664, E633099\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAYP:\u003c\/strong\u003e 102603, 109580, 539102603, 539109580\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHusqvarna:\u003c\/strong\u003e 102603, 109580, 539102603, 539109580\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYazoo\/Kees:\u003c\/strong\u003e 102603, 109580, 539102603, 539109580\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBobcat \/ Bob-Cat:\u003c\/strong\u003e 1522040, 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBunton:\u003c\/strong\u003e 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRansomes:\u003c\/strong\u003e 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoods:\u003c\/strong\u003e 2188151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerris:\u003c\/strong\u003e 1522040\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eAftermarket Cross-Reference Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarner Electric:\u003c\/strong\u003e 5218-5, 52185\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Warner Path:\u003c\/strong\u003e 5218-259, 5218259\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier Warner Number:\u003c\/strong\u003e 5218-70, 521870\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXtreme:\u003c\/strong\u003e X0015\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStens:\u003c\/strong\u003e 255-535\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotary:\u003c\/strong\u003e 11444\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOregon:\u003c\/strong\u003e 33-115\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime Line:\u003c\/strong\u003e 7-06032\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Aftermarket Reference:\u003c\/strong\u003e 230-4076\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarner-number note:\u003c\/strong\u003e Warner identifies 5218-259 as the replacement for 5218-70. Warner does not state that 5218-259 supersedes 5218-5, although established aftermarket suppliers group 5218-5 and 5218-259 within the same replacement family.\u003c\/p\u003e\n\u003cp\u003eMatch the original mower part number first, then confirm the bore, pulley, rotation, mounting orientation, connector, and belt alignment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eClutch Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e electric PTO clutch with integrated brake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Warner Reference Torque:\u003c\/strong\u003e 175 ft-lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft Bore:\u003c\/strong\u003e 1-1\/8 inch \/ 1.125 inch with standard keyway\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley Diameter:\u003c\/strong\u003e approximately 6.31 inch \/ 6-5\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e CW according to Warner specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e reverse mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e integral electrical connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Groove:\u003c\/strong\u003e A\/B combination path\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Belt Width:\u003c\/strong\u003e 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Warner Current Draw:\u003c\/strong\u003e 5.24 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Warner Coil Resistance:\u003c\/strong\u003e 2.29 ohms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Warner electrical figures are reference specifications for the original clutch path. Compare the supplied aftermarket clutch with the original before installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant Serial-Number Routing\u003c\/h2\u003e\n\u003cp\u003eThe early and later Exmark Lazer Z clutch paths are easy to confuse because the clutches share several dimensions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier Lazer Z Path:\u003c\/strong\u003e 1-631645, 1-633099, 103-0664, Warner 5218-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Replacement-Catalog Range:\u003c\/strong\u003e serial numbers through 159,999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLater Lazer Z Path:\u003c\/strong\u003e 103-0665, 1-631732, 1-641300, Warner 5218-213\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Later Range:\u003c\/strong\u003e select serial 160,000-and-higher applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDo not substitute the early and later clutch paths using only the 1-1\/8-inch bore and 6.31-inch pulley measurements.\u003c\/strong\u003e Confirm the original clutch number, connector, mounting orientation, anti-rotation setup, engine configuration, and serial number.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReverse-Mount \u0026amp; Installation Considerations\u003c\/h2\u003e\n\u003cp\u003eWarner classifies the 5218-5 reference clutch as a \u003cstrong\u003ereverse-mount configuration\u003c\/strong\u003e. Reverse mount describes the clutch’s installation orientation on the engine crankshaft. The center bore remains a conventional keyed 1-1\/8-inch bore.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDocument the original clutch orientation before removal.\u003c\/li\u003e\n\u003cli\u003eConfirm that the replacement pulley sits at the same height as the original.\u003c\/li\u003e\n\u003cli\u003eCompare the pulley offset with the deck-drive belt path.\u003c\/li\u003e\n\u003cli\u003eInspect the crankshaft key and keyway for damage.\u003c\/li\u003e\n\u003cli\u003eInspect the anti-rotation bracket for cracks, bending, or enlarged mounting points.\u003c\/li\u003e\n\u003cli\u003eDo not force an anti-rotation bracket that does not align naturally.\u003c\/li\u003e\n\u003cli\u003eConfirm that the wiring cannot contact the pulley, belt, exhaust, or rotating engine components.\u003c\/li\u003e\n\u003cli\u003eRotate the pulley manually after installation to check for interference.\u003c\/li\u003e\n\u003cli\u003eVerify belt alignment before engaging the PTO under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncorrect mounting orientation, pulley offset, wiring position, or anti-rotation alignment can cause clutch movement, wiring damage, belt wear, overheating, and premature bearing failure.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Symptoms of a Failing PTO Clutch\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBlades will not engage when the PTO switch is activated\u003c\/li\u003e\n\u003cli\u003eThe clutch clicks but the deck belt does not begin turning\u003c\/li\u003e\n\u003cli\u003eBlades engage when cold but stop after the mower heats up\u003c\/li\u003e\n\u003cli\u003eThe clutch slips during heavy or wet cutting conditions\u003c\/li\u003e\n\u003cli\u003eThe deck belt squeals, smokes, or overheats during engagement\u003c\/li\u003e\n\u003cli\u003eBurning smell near the engine crankshaft or clutch\u003c\/li\u003e\n\u003cli\u003eGrinding, rumbling, or excessive pulley-bearing noise\u003c\/li\u003e\n\u003cli\u003eIntermittent blade engagement under load\u003c\/li\u003e\n\u003cli\u003eVisible heat damage around the coil or electrical connector\u003c\/li\u003e\n\u003cli\u003eExcessive looseness or roughness at the pulley bearing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA weak battery, charging-system problem, faulty PTO switch, damaged wiring, poor ground, slipping deck belt, seized spindle, worn idler, or incorrect belt tension can create similar symptoms. Diagnose the complete PTO and deck-drive systems before replacing the clutch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 complete aftermarket electric PTO clutch assembly\u003c\/li\u003e\n\u003cli\u003eElectromagnetic coil and integrated brake assembly\u003c\/li\u003e\n\u003cli\u003ePulley and center-bearing assembly\u003c\/li\u003e\n\u003cli\u003eIntegral clutch-side electrical connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Buy From PTO Direct USA?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePart-number-first PTO clutch listings\u003c\/li\u003e\n\u003cli\u003eClear physical specifications and cross-reference information\u003c\/li\u003e\n\u003cli\u003eSeparate routing for early and later Exmark Lazer Z clutch paths\u003c\/li\u003e\n\u003cli\u003eFitment warnings designed to reduce incorrect clutch orders\u003c\/li\u003e\n\u003cli\u003eCommercial and residential mower clutch coverage\u003c\/li\u003e\n\u003cli\u003eSupport for mower owners, repair shops, and commercial operators\u003c\/li\u003e\n\u003cli\u003eQuick-ship fulfillment through trusted distribution partners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eNeed Help Confirming Fitment?\u003c\/h2\u003e\n\u003cp\u003eSend PTO Direct USA the mower brand, complete model number, serial number, deck size, engine manufacturer, engine model, and original clutch number.\u003c\/p\u003e\n\u003cp\u003eInclude clear photos of the clutch label, pulley, keyed bore, electrical connector, belt groove, mounting orientation, and anti-rotation bracket. When the original label is unreadable, include measurements for the crankshaft bore, pulley diameter, pulley offset, and clutch-body height.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does this PTO clutch replace?\u003c\/h3\u003e\n\u003cp\u003eThis clutch replaces select applications using \u003cstrong\u003eExmark 1-631645\u003c\/strong\u003e, \u003cstrong\u003eExmark 1-633099\u003c\/strong\u003e, \u003cstrong\u003eExmark 103-0664\u003c\/strong\u003e, \u003cstrong\u003eHusqvarna 539102603\u003c\/strong\u003e, \u003cstrong\u003eBobcat 2188151\u003c\/strong\u003e, or \u003cstrong\u003eWarner 5218-5\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat are the main clutch specifications?\u003c\/h3\u003e\n\u003cp\u003eThe Warner reference path uses a \u003cstrong\u003e1-1\/8-inch keyed bore\u003c\/strong\u003e, approximately \u003cstrong\u003e6.31-inch pulley\u003c\/strong\u003e, \u003cstrong\u003eCW rotation\u003c\/strong\u003e, reverse mounting, integral electrical connection, 12 VDC coil, and a \u003cstrong\u003e175 ft-lb torque rating\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Exmark Lazer Z?\u003c\/h3\u003e\n\u003cp\u003eIt fits select early Exmark Lazer Z applications using 1-631645, 1-633099, or 103-0664. Replacement catalogs commonly associate this path with serial numbers through 159,999. Confirm the original clutch number and serial-specific parts diagram.\u003c\/p\u003e\n\u003ch3\u003eDoes this replace Exmark 103-0665?\u003c\/h3\u003e\n\u003cp\u003eDo not use 103-0665 as the primary fitment match for this page. Exmark 103-0665 is commonly documented on later Lazer Z applications using Warner 5218-213. Marketplace catalogs sometimes combine these paths incorrectly.\u003c\/p\u003e\n\u003ch3\u003eIs Exmark 1-631732 the same as 1-631645?\u003c\/h3\u003e\n\u003cp\u003eNo. Exmark 1-631732 is associated with the later Warner 5218-213 clutch path. Keep it separate from the 1-631645 \/ Warner 5218-5 path.\u003c\/p\u003e\n\u003ch3\u003eDoes this replace Bobcat 2188151?\u003c\/h3\u003e\n\u003cp\u003eYes. Warner directly associates 2188151 with the 5218-5 clutch path. Confirm the original clutch label, mower model, and physical specifications.\u003c\/p\u003e\n\u003ch3\u003eIs Bobcat 2721337 the same as 2188151?\u003c\/h3\u003e\n\u003cp\u003eNo. Bobcat 2721337 follows the separate Warner 5218-213 path. Do not substitute 2721337 and 2188151 based on appearance or shared bore and pulley dimensions.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Bobcat ZT200 mowers?\u003c\/h3\u003e\n\u003cp\u003eIt fits select Bobcat, Bob-Cat, Bunton, and Ransomes ZT200 Series applications using 2188151. Confirm the original clutch number and complete mower configuration.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Bobcat ZT331 mowers?\u003c\/h3\u003e\n\u003cp\u003eIt is associated with select ZT331 Series applications using 2188151. Verify the original clutch label and model-specific parts diagram.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Husqvarna ZTH5223A?\u003c\/h3\u003e\n\u003cp\u003eIt fits select 2000–2006 ZTH5223A applications using 102603 or 539102603. Confirm the complete product number, engine, connector, and original clutch.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Husqvarna ZTH5225A?\u003c\/h3\u003e\n\u003cp\u003eIt fits select 2000–2006 ZTH5225A applications using the 539102603 clutch path. Verify the original number before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Yazoo\/Kees ZKH models?\u003c\/h3\u003e\n\u003cp\u003eIt is associated with select ZKH52220, ZKH52221, ZKH52222, ZKH52223, ZKH52233, ZKH52250, and ZKH52251 applications using 102603 or 539102603.\u003c\/p\u003e\n\u003ch3\u003eIs Warner 5218-259 the same replacement path?\u003c\/h3\u003e\n\u003cp\u003eEstablished aftermarket catalogs group Warner 5218-259 and 5218-5 within the same replacement family because their major physical and electrical specifications match. Warner officially states that 5218-259 replaces 5218-70, not that it supersedes 5218-5.\u003c\/p\u003e\n\u003ch3\u003eDoes Warner 5218-259 replace Warner 5218-70?\u003c\/h3\u003e\n\u003cp\u003eYes. Warner identifies 5218-259 as the replacement for the earlier 5218-70 clutch.\u003c\/p\u003e\n\u003ch3\u003eIs Xtreme X0015 the same replacement path?\u003c\/h3\u003e\n\u003cp\u003eYes. Xtreme X0015 is an aftermarket replacement path associated with Exmark 1-631645 and 1-633099, Husqvarna 539102603, Bobcat 2188151, and Warner 5218-5.\u003c\/p\u003e\n\u003ch3\u003eIs Stens 255-535 the same replacement path?\u003c\/h3\u003e\n\u003cp\u003eYes. Stens 255-535 is commonly cross-referenced to Warner 5218-5 and 5218-259 applications. Match the original clutch number and physical specifications.\u003c\/p\u003e\n\u003ch3\u003eWhat belt size does this clutch use?\u003c\/h3\u003e\n\u003cp\u003eThis clutch follows an A\/B combination pulley path and is commonly used with a \u003cstrong\u003e5\/8-inch deck belt\u003c\/strong\u003e. Confirm the original belt width and pulley groove.\u003c\/p\u003e\n\u003ch3\u003eDoes this clutch have a normal crankshaft keyway?\u003c\/h3\u003e\n\u003cp\u003eYes. The clutch uses a conventional \u003cstrong\u003e1-1\/8-inch keyed crankshaft bore\u003c\/strong\u003e. Confirm the crankshaft key and keyway condition before installation.\u003c\/p\u003e\n\u003ch3\u003eIs the mounting hardware included?\u003c\/h3\u003e\n\u003cp\u003eDo not assume the crankshaft bolt, washer, key, spacer, wiring adapter, or anti-rotation bracket is included. Reuse or replace the mower-specific hardware as required.\u003c\/p\u003e\n\u003ch3\u003eCan I order this clutch by appearance?\u003c\/h3\u003e\n\u003cp\u003eNo. Match the original part number first, then confirm the 1-1\/8-inch keyed bore, pulley diameter, rotation, reverse mounting, connector, belt groove, pulley offset, anti-rotation setup, mower model, and serial number.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated PTO Clutches \u0026amp; Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pto-clutch-2721337\"\u003e2721337 PTO Clutch for Bobcat ProCat and Predator Pro | Warner 5218-213 Path\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/pto-clutch-fitment-guides\/pto-clutch-bore-size-guide\"\u003ePTO Clutch Bore Size Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/pto-clutch-fitment-guides\/pto-clutch-rotation-guide\"\u003ePTO Clutch Rotation Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pto-clutches\"\u003eBrowse the Full Electric PTO Clutch Catalog\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PTO Direct USA","offers":[{"title":"Default Title","offer_id":53243982152047,"sku":"PTO-1-631645-ecp102397","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/1-631645-pto-clutch.jpg?v=1785105776","url":"https:\/\/ptodirectusa.com\/products\/pto-clutch-1-631645","provider":"PTO Direct USA","version":"1.0","type":"link"}