{"product_id":"bartell-23563-hand-knob-assembly-m20-1-5-oem-walk-behind-trowel-part","title":"Bartell 23563 Hand Knob Assembly M20-1.5 OEM Walk Behind Trowel Part","description":"\u003cp\u003eThis hand knob assembly provides the operator with precise pitch adjustment control on the trowel arms, allowing technicians to set and lock rotor blade angle during finishing operations, a critical wear and maintenance item on walk-behind power trowels. The M20-1.5 thread specification indicates a metric fine-thread engagement, which delivers accurate incremental adjustment and secure locking force without backing off under vibration. This assembly is designated for units with serial numbers after 717175, reflecting an updated design revision; installers should verify the machine serial number before ordering to ensure correct fitment. When the hand knob assembly becomes worn, stripped, or cracked, operators lose the ability to reliably set blade pitch, which directly impacts surface finish quality and can cause uneven troweling patterns. Replacing this part promptly restores full adjustment range and operator control. As an assembly, this unit ships ready to install without requiring additional sub-components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Bartell B424 Walk Behind Trowel\u003c\/li\u003e\n\u003cli\u003eCompatible with Bartell B430 Walk Behind Trowel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGenuine Bartell Global OEM part, sold by an authorized dealer.\u003c\/p\u003e","brand":"Bartell","offers":[{"title":"Default Title","offer_id":43412766621744,"sku":"23563","price":138.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6574\/7248\/files\/23563.jpg?v=1784314552","url":"https:\/\/cce-industries.com\/products\/bartell-23563-hand-knob-assembly-m20-1-5-oem-walk-behind-trowel-part","provider":"CCE Industries","version":"1.0","type":"link"}