Husqvarna 579150802 Backside Idler Pulley – Replacement Lawn & Garden Equipment Drive Belt Pulley Component

Part Number: 579150802
Category: Lawn & Garden Equipment Replacement Parts
Type: Backside Idler Pulley – Replacement Lawn & Garden Equipment Drive Belt Pulley Component

The Husqvarna 579150802 Backside Idler Pulley is a replacement drive-system component designed for compatible Husqvarna lawn and garden equipment. Designed to contact the backside, or non-driving surface, of the applicable belt, this idler pulley helps guide the belt, maintain the intended belt path, and support proper tension within the drive system. Ideal for replacing a worn, seized, noisy, cracked, damaged, wobbling, or otherwise unserviceable pulley, the 579150802 helps restore proper belt tracking and drive-system operation.

Product Specifications

• Part Number: 579150802
• Brand: Husqvarna
• Product Type: Idler Pulley
• Pulley Type: Backside Idler
• Component Type: Replacement Drive Belt Pulley Component
• Application: Lawn & Garden Equipment
• System: Belt Drive, Pulley & Tensioning System
• Function: Belt Guidance, Routing, Tension Support & Tracking
• Condition: New

Features & Benefits

• Replacement backside idler pulley for compatible Husqvarna equipment
• Designed to operate against the applicable belt's non-driving or backside surface
• Helps guide the drive belt through its specified routing path
• Supports proper belt tracking and alignment during equipment operation
• Works within the applicable tensioning system to help maintain the intended belt configuration
• Provides a rotating contact surface for the backside of the belt where specified
• Helps reduce improper belt movement when a worn or damaged idler is the cause
• Suitable for replacing a worn, seized, noisy, cracked, wobbling, damaged, or failed idler pulley
• Useful for belt-drive maintenance, tensioning-system repair, and equipment restoration
• Direct replacement option when Husqvarna part number 579150802 is specified

Applications

• Husqvarna lawn and garden equipment
• Compatible Husqvarna outdoor power equipment
• Belt-driven equipment systems
• Drive belt routing assemblies
• Belt tensioning systems
• Idler pulley assemblies
• Mower deck or propulsion drive systems where applicable
• Belt-drive maintenance and repair
• Replacement of worn or damaged idler pulleys
• Applications specifying Husqvarna 579150802

Important Notes

• Verify part number 579150802 before ordering
• Confirm compatibility with your specific Husqvarna equipment model and belt-drive configuration
• The supplied product information identifies this component as a Backside Idler Pulley
• A backside idler is intended for the applicable non-driving surface of the belt; do not substitute a differently configured pulley without confirming compatibility
• The exact equipment system driven by this pulley is not identified in the supplied product information
• Do not assume this pulley is specifically intended for a mower deck, transmission, traction drive, attachment drive, blade drive, or another particular belt system unless confirmed by the applicable Husqvarna parts information
• The exact pulley diameter, width, bore diameter, bearing dimensions, material, surface profile, offset, mounting configuration, and compatible belt dimensions are not identified in the supplied product information
• The supplied information does not identify whether a bearing, bushing, sleeve, spacer, or other internal component is included as part of the pulley
• Compare the original pulley's diameter, width, belt-contact profile, bore or mounting interface, offset, alignment, and mounting position
• Pulleys that appear visually similar may have different diameters, offsets, mounting arrangements, bearing configurations, or belt-contact profiles
• Inspect associated belts, tensioner arms, springs, brackets, pivots, bearings, bushings, spacers, sleeves, washers, shafts, retainers, and mounting hardware for wear or damage
• A seized, rough, or wobbling idler pulley can contribute to belt wear, heat buildup, poor tracking, noise, vibration, or belt derailment
• Inspect the belt for cracking, glazing, fraying, stretching, missing material, heat damage, contamination, or abnormal edge wear before reinstalling it
• If the original pulley failed prematurely, check for incorrect belt routing, excessive tension, misalignment, damaged brackets, seized pivots, worn bearings, or foreign debris
• Verify the correct belt routing using the applicable equipment diagram or service information before operation
• Keep the pulley and belt contact surfaces free from oil, grease, belt dressing, and other contaminants unless specifically required by the manufacturer
• Do not drill, grind, machine, bend, heat, reshape, enlarge the bore, or otherwise modify the pulley to force compatibility
• This listing is for the backside idler pulley; do not assume that the belt, tensioner arm, spring, bracket, bolt, bearing, bushing, sleeve, spacer, washer, retainer, or other mounting hardware is included unless specifically stated
• Shut off the equipment, disconnect the applicable power source, and relieve applicable belt or spring tension carefully before servicing the drive system
• After installation, verify proper pulley seating, free rotation, belt routing, belt alignment, tension, tracking, component clearance, fastener retention, and overall drive-system operation before returning the equipment to normal service