{"title":"MCF Parts","description":"\u003cp\u003e\u003ca href=\"\/collections\/espresso-coffee-grinder-parts-nuova-simonelli-grinder-parts\" title=\"Nuova Simonelli Grinder Parts\"\u003e\u0026lt;\u0026lt; Back To Nuova Simonelli Grinder Parts\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-element=\"inner\" style=\"justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;\"\u003e\n\u003cdiv data-content-type=\"text\" data-appearance=\"default\" data-element=\"main\" style=\"border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;\"\u003e\n\u003clink rel=\"stylesheet\" href=\"https:\/\/code.jquery.com\/ui\/1.11.1\/themes\/smoothness\/jquery-ui.css\"\u003e\n                \u003cscript src=\"https:\/\/code.jquery.com\/ui\/1.11.1\/jquery-ui.js\"\u003e\u003c\/script\u003e\n                \u003cscript src=\"\/espressoparts\/parts_diagram_popup.js\"\u003e\u003c\/script\u003e\n                \n                \u003ca class=\"diagram_small_img header__action-item-link\" aria-controls=\"parts_diagram\" aria-expanded=\"false\" data-action=\"toggle-popover\"\u003e\u003cimg name=\"\" src=\"https:\/\/ep-shopify.s3.amazonaws.com\/media\/wysiwyg\/Diagrams\/mcf-parts.png\" width=\"350\" height=\"400\"\u003e\u003cbr\u003eClick to View\u003c\/a\u003e\n                \u003cdiv id=\"parts_diagram\" class=\"popover popover--large\" aria-hidden=\"true\"\u003e\n\n\u003cimg name=\"\" src=\"https:\/\/ep-shopify.s3.amazonaws.com\/media\/wysiwyg\/Diagrams\/mcf-parts.png\" width=\"800\" height=\"940\" border=\"0\" id=\"\" usemap=\"#m_\" alt=\"\"\u003e\u003cmap name=\"m_\" id=\"m_\"\u003e\n\u003carea shape=\"poly\" coords=\"562,599,631,599,631,619,562,619,562,599\" href=\"javascript:;\" target=\"_blank\" title=\"MEK_88 - 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1528042 (M3x6)\" alt=\"MEK_77 - 1528042 (M3x6)\"\u003e\n\u003c\/map\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" style=\"border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;\"\u003e                \n\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e","products":[{"product_id":"faema-due-steam-valve-piston-fixing-nut","title":"Faema Due Steam Valve Piston Fixing Nut","description":"\u003cp\u003e\u003cstrong\u003eFaema Due Steam Valve Piston Fixing Nut\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eM8 self-locking nut that secures the steam valve piston on Faema Due models. Stainless steel with a built-in nylon insert ring for reliable, vibration-resistant locking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM8 thread, self-locking nylon insert\u003c\/li\u003e\n\u003cli\u003eStainless steel\u003c\/li\u003e\n\u003cli\u003eMeets UNI 7473 \/ DIN 982 \/ ISO 7040 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eFits: Faema Due steam valve piston assemblies\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBasic hand-tool job - torque to spec, don't overtighten the nylon insert.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eNylon-insert lock nuts lose their locking force once removed and reinstalled a few times - if you're servicing a valve you've been into before, replace this nut rather than reusing it to avoid it backing off under vibration.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37553556422843,"sku":"F_1262","price":1.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/f_1262_13ee3a0f-ed18-4d56-b5c1-524dcd91c45b.jpg?v=1783619216"},{"product_id":"black-bipolar-on-off-switch-with-light","title":"Black Two-pole On\/off Switch with Light","description":"\u003cp\u003e\u003cstrong\u003eBlack Two-Pole On\/Off Switch with Indicator Light\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUniversal 4-terminal bipolar switch with a built-in LED indicator, rated 250V\/16A and sized for a standard 22 x 30 mm mounting cutout. Cross-references to OEM switches used across a wide range of Italian and Spanish equipment brands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e250V, 16A\u003c\/li\u003e\n\u003cli\u003e4 voltage terminals with built-in LED indicator\u003c\/li\u003e\n\u003cli\u003eMounting hole: 22 x 30 mm\u003c\/li\u003e\n\u003cli\u003eColor: black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits: any bipolar (4-terminal) switch application with a 22 x 30 mm mounting hole - Ascaso, Astoria CMA, Compak, Fiorenzato, Grimac, Lavazza, San Marco, Vibiemme, Wega and similar equipment\u003c\/li\u003e\n\u003cli\u003eReplaces: Ascaso\/Compak K...69, Astoria CMA\/MCE 18263, Fiorenzato\/Grimac A2100093, Lavazza 10066208, LF 3319294\/3319296, Nuova Ricambi 721042, Orchestrale D18263, Ricambi Gardosi GR113, San Marco 108539, Vibiemme MACCIN250LAVB, Wega WY18263\u003c\/li\u003e\n\u003cli\u003eWorks with: espresso machine and grinder power\/control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStraightforward for anyone comfortable with basic wiring - label or photograph your old switch's terminals before disconnecting them, since this is a generic multi-brand part with no single universal pinout. This is an electrical item and final sale per our \u003ca href=\"https:\/\/www.espressoparts.mom\/returns\"\u003ereturn policy\u003c\/a\u003e - contact \u003ca href=\"mailto:info@espressoparts.mom\"\u003eour team\u003c\/a\u003e if you are unsure of fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eTag each wire as you remove it from the old switch - mixing up the two hot legs and the LED feed is the most common install mistake with these generic 4-terminal switches.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37554094080187,"sku":"K_69","price":6.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/k_69_2.png?v=1785173905"},{"product_id":"nuova-simonelli-mcf-grinder-hopper","title":"Nuova Simonelli MCF Grinder Hopper","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli MCF Grinder Hopper, Complete with Gate \u0026amp; Lid\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eComplete replacement hopper for the Nuova Simonelli MCF grinder, including the hopper gate and lid, sized for a 41 mm (1.61\") O.D. throat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThroat O.D.: 41 mm (1.61 in.)\u003c\/li\u003e\n\u003cli\u003eIncludes: hopper gate and lid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits: Nuova Simonelli MCF grinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSimple DIY drop-in replacement.\u003c\/p\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37555004080315,"sku":"S15800002","price":57.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800002_1.jpg?v=1610099110"},{"product_id":"nuova-simonelli-three-hole-50mm-grinder-burrs-mcf-mci-microbar-grinta","title":"Nuova Simonelli Three Hole 50mm Grinder Burrs","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli Three-Hole 50mm Grinder Burr Set\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter-market 50 x 30 x 7.5 mm right-hand rotation burr set (\u003ca href=\"https:\/\/www.espressoparts.mom\/pages\/nuova-simonelli-victoria-arduino\" target=\"_blank\"\u003eNuova Simonelli\u003c\/a\u003e doesn't manufacture its own burrs, these are Eureka-made, the same OEM that supplies Simonelli). This is the three-hole mounting version.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e50 x 30 x 7.5 mm\u003c\/li\u003e\n\u003cli\u003eRight-hand rotation\u003c\/li\u003e\n\u003cli\u003eThree-hole mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eFits: Nuova Simonelli MCF, MCI, MDH, Microbar, Grinta, and Prontobar (super-automatic)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDIY-feasible for an experienced home technician, but burr alignment and dosing recalibration afterward benefit from a technician's touch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCheck your existing burr set before ordering, Simonelli\/Eureka produced these grinders with both this three-hole mount and an earlier two-hole version, and the two-hole burrs and mounting hardware are now completely out of production, so a three-hole burr won't retrofit a two-hole carrier.\u003c\/li\u003e\n\u003cli\u003eFor more on when and how to change your burrs, see Espresso Parts' \u003ca href=\"https:\/\/ep-prod.myshopify.com\/blogs\/barista-basics-tutorials\/grinder-burr-maintenance\" target=\"_blank\"\u003egrinder burr maintenance guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nuova Simonelli","offers":[{"title":"Default Title","offer_id":37555004211387,"sku":"S15800045","price":20.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800045_1.jpg?v=1686346304"},{"product_id":"nuova-simonelli-mcf-doser-return-lever","title":"Nuova Simonelli 'MCF' Doser Return Lever","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli MCF Doser Return Lever\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReturn lever for the Nuova Simonelli MCF doser. The cam stopping pin and spring that work with this lever are not included, so check those separately if your rebuild needs them too.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eFits: Nuova Simonelli MCF doser\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA moderate DIY task for anyone comfortable with doser mechanisms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eThe cam stopping pin and spring insert into this lever but aren't included, inspect those parts while you have the doser open, since a worn pin or weak spring is a common cause of an inconsistent doser return action even after replacing the lever.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37555778027707,"sku":"S15800027","price":13.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800027_08ee0ae0-b716-4c32-9114-654edcecf631.jpg?v=1610104868"},{"product_id":"nuova-simonelli-mcf-grinder-doser-return-spring","title":"Nuova Simonelli 'MCF' Grinder Doser Return Spring","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli 'MCF' Grinder Doser Return Spring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOut-of-production return spring for the doser mechanism on Nuova Simonelli's 'MCF' grinder. Limited stock remains, once sold out, this is a discontinued part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eSize: 48 x 4 mm\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits: Nuova Simonelli 'MCF' grinder doser mechanism\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStraightforward for anyone who has serviced a doser before; access requires removing the doser cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eBecause this spring is discontinued, if your doser lever feels weak or won't return crisply, grab this now, Nuova Simonelli is not remanufacturing 'MCF' doser parts.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Nuova Simonelli","offers":[{"title":"Default Title","offer_id":37556515995835,"sku":"S15800024","price":7.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800024_883a2e24-d9fe-499d-adfd-5aa8a7249ab7.jpg?v=1610110091"},{"product_id":"nuova-simonelli-mcf-grinder-doser-cam-spring","title":"Nuova Simonelli 'MCF' Grinder Doser Cam Spring","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli 'MCF' Grinder Doser Cam Spring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCam spring for the doser mechanism on the Nuova Simonelli 'MCF' grinder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eSize: 4 x 12 mm\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits: Nuova Simonelli 'MCF' grinder doser cam\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSimple spring swap accessible after removing the doser cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRO TIPS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eOrder this alongside the doser return spring (S15800024) if your MCF doser is elderly, both wear at roughly the same rate, and replacing them together is cheap insurance against a second teardown.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Nuova Simonelli","offers":[{"title":"Default Title","offer_id":37556516061371,"sku":"S15800026","price":2.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800026_361009c0-df6e-4d62-acf7-053ac79ca512.jpg?v=1610110093"},{"product_id":"nuova-simonelli-mcf-grinder-doser-lid","title":"Nuova Simonelli MCF Grinder Doser Lid","description":"\u003cp\u003eDoser lid for Nuova Simonelli MCF grinder. 95 mm diameter. Special order item. Typically requires 6-10 business days for processing prior to shipping.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cstrong\u003eSpecifications\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDiameter: 95 mm\u003c\/li\u003e\n\u003cli\u003eNuova Simonelli OEM part #: S15800014\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNuova Simonelli MCF grinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement\u003c\/li\u003e\n\u003cli\u003eRecommended for qualified technician.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Espresso Parts","offers":[{"title":"Default Title","offer_id":37557101953211,"sku":"S15800014","price":14.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/mek_80.jpg?v=1612373045"},{"product_id":"nuova-simonelli-mcf-hopper-gate","title":"Nuova Simonelli MCF Hopper Gate","description":"\u003cp\u003eHopper gate for Nuova Simonelli MCF grinder only. Fast shipping when in stock. When out of stock this becomes a special order item and typically requires 6-10 business days for processing prior to shipping.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cstrong\u003eSpecifications\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNuova Simonelli OEM part #: S15800042\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNuova Simonelli MCF grinder only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement in hopper\u003c\/li\u003e\n\u003cli\u003eRecommended for qualified technician.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LF","offers":[{"title":"Default Title","offer_id":37557102084283,"sku":"S15800042","price":10.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/s15800042.jpg?v=1612373047"},{"product_id":"nuova-simonelli-mcf-grinder-foot","title":"Nuova Simonelli MCF Grinder Foot","description":"\u003cp\u003eLong round rubber foot for Nuova Simonelli MCF grinder – supplied undersized and must be glued in place.\u003c\/p\u003e\u003ch2\u003e\n\u003cstrong\u003eSpecifications\u003c\/strong\u003e:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eType: Long round rubber foot\u003c\/li\u003e\n\u003cli\u003eNuova Simonelli part #: MEK104\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e:\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eNuova Simonelli MCF grinder\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGlue new foot in place\u003c\/li\u003e\n\u003cli\u003eRecommended for qualified technician.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nuova Simonelli","offers":[{"title":"Default Title","offer_id":37557657829563,"sku":"MEK104","price":2.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/8282\/9755\/products\/mek104_29d3f5df-c5c9-4b2d-9d19-48a79210491a.png?v=1783617387"},{"product_id":"nuova-simonelli-mcf-doser-cam","title":"Nuova Simonelli 'MCF' Doser Cam","description":"\u003cp\u003e\u003cstrong\u003eNuova Simonelli 'MCF' Doser Cam\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall plastic pawl (ratchet) that indexes the doser mechanism one dose at a time on Nuova Simonelli MCF-equipped grinders. 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