Husqvarna 581547901 Blade Adapter – Replacement Lawn Mower Blade Mounting Component

Part Number: 581547901
Category: Lawn & Garden Equipment Replacement Parts
Type: Blade Adapter – Replacement Lawn Mower Blade Mounting Component

The Husqvarna 581547901 Blade Adapter is a replacement mower cutting-system component designed for compatible Husqvarna lawn mowers and lawn and garden equipment. Installed between the applicable drive shaft and mower blade assembly, the blade adapter helps secure, position, and align the mower blade while supporting rotational power transfer during cutting operation. Ideal for replacing a worn, cracked, bent, distorted, damaged, or otherwise unserviceable blade adapter, the 581547901 helps restore proper blade mounting, alignment, and reliable cutting-system performance.

Product Specifications

• Part Number: 581547901
• Brand: Husqvarna
• Product Type: Blade Adapter
• Component Type: Replacement Lawn Mower Blade Mounting Component
• Application: Lawn Mower / Lawn & Garden Equipment
• System: Mower Blade & Cutting System
• Function: Blade Mounting, Positioning, Alignment & Rotational Power Transfer
• Condition: New

Features & Benefits

• Replacement blade adapter for compatible Husqvarna lawn mowers
• Designed for use within the applicable mower blade mounting assembly
• Provides the interface between applicable drive and blade components
• Helps maintain proper mower blade positioning and alignment
• Supports rotational power transfer to the mower blade during operation
• Helps maintain a secure connection within the cutting assembly
• Supports proper blade rotation when correctly installed
• Helps restore cutting-system operation when the original adapter becomes worn or damaged
• Suitable for replacing a worn, cracked, bent, distorted, damaged, or otherwise unserviceable blade adapter
• Direct replacement option when Husqvarna part number 581547901 is specified

Applications

• Husqvarna lawn mowers
• Compatible Husqvarna walk-behind mowers
• Lawn mower cutting systems
• Mower blade mounting assemblies
• Engine shaft and blade interfaces where specified
• Blade drive assemblies
• Cutting-system power transmission components
• Lawn mower blade support applications
• Replacement of worn or damaged blade adapters
• Applications specifying Husqvarna 581547901

Important Notes

• Verify part number 581547901 before ordering
• Confirm compatibility with your specific Husqvarna mower model, engine, blade, and cutting-system configuration
• This component is identified as a blade adapter; verify the exact mounting configuration and installation position before ordering
• The exact overall dimensions, adapter height, material, shaft bore diameter, keyway configuration, drive features, blade engagement pattern, mounting-hole dimensions, and compatible shaft specifications are not identified in the supplied product information
• Compare the original blade adapter’s bore or shaft interface, overall dimensions, drive features, blade engagement surfaces, mounting configuration, and orientation
• Do not substitute a blade adapter based solely on approximate dimensions, bore size, or appearance
• Inspect associated engine crankshaft or drive shaft, mower blade, blade bolt, washers, keys, retainers, mounting hardware, and cutting deck components for wear or damage
• If the original blade adapter was damaged after striking a rock, stump, curb, root, or other solid object, inspect the complete cutting assembly and engine shaft for impact-related damage before installing the replacement
• Check the adapter and adjoining components for cracks, deformation, worn engagement surfaces, damaged keyways, excessive play, corrosion, or other conditions that could prevent secure blade mounting
• A worn, bent, loose, or incorrectly installed blade adapter may contribute to blade wobble, excessive vibration, abnormal noise, poor cutting performance, mounting looseness, or damage to associated cutting components
• Make sure all blade mounting surfaces are clean and correctly seated before tightening the blade assembly
• Install the mower blade in the correct orientation and use the applicable manufacturer-specified blade fastener and torque procedure
• Never operate the mower with a loose, damaged, incorrectly mounted, or improperly aligned blade or blade adapter
• This listing is for the blade adapter; do not assume that the mower blade, blade bolt, washers, keys, retainers, shaft components, or additional mounting hardware are included unless specifically stated
• Shut off the engine, disconnect the spark plug, and make sure the blade and all moving components have completely stopped before servicing the mower cutting system
• Wear appropriate protective gloves when handling mower blades and cutting-system components
• After installation, verify proper adapter fitment, shaft engagement, blade positioning, mounting security, blade clearance, rotational alignment, and overall cutting-system operation before returning the mower to normal service