Adefol Clutch Drum Kit & Cover Assembly for Husqvarna 435/440 — 325"-7T Fit with Chain Brake & Bar Nuts

Complete replacement clutch drum kit and clutch cover assembly engineered to fit Husqvarna 435/435E and 440/440E chainsaws for restored drive performance and reliable chain braking.

If your Husqvarna 435 or 440-series chainsaw is showing signs of clutch wear, slipping, or a loose chain brake, this Adefol 325"-7T Clutch Drum Kit & Clutch Cover Assembly provides the assemblies and fasteners needed to return the unit to safe, reliable operation. Built to match OEM fit and fitment numbers, the kit groups the clutch drum, clutch assembly, chain brake components, clutch cover, and bar nuts so you can perform a straightforward replacement without sourcing parts separately.

Will this clutch drum kit fit my Husqvarna 435 or 440 chainsaw?

Yes — the kit is designed specifically for Husqvarna 435, 435E, 440, and 440E models. It aligns with several OEM part numbers so you get the correct geometry and mounting points for direct swap-in installation.

• Compatible with Husqvarna 435/435E and 440/440E chainsaws.
• Matches OEM clutch drum part numbers 505441501 and related variants.
• Includes chain brake assembly and clutch assembly to mirror factory components.
• Comes with two bar nuts for secure guide bar attachment.

How does this kit restore chainsaw performance?

The clutch drum and clutch assembly transfer engine power to the chain while the chain brake provides safety control. Replacing worn drum teeth, springs, or the brake components eliminates slippage and inconsistent chain speed, helping the saw cut smoothly and predictably.

• New sprocket clutch drum for firm engagement with the drive system.
• Clutch assembly rebuilt to restore proper centrifugal engagement.
• Chain brake assembly to ensure safe stopping and compliance with original safety function.
• Bar nuts included to ensure correct bar tension and mounting torque.

What comes in the box and what tools will I need?

The package contains the main replacement parts you’ll typically need for a clutch and cover overhaul so you can avoid multiple orders. Basic mechanic tools and common small-engine tools will let you finish the job in a garage or jobsite setting.

• Included: 1 x clutch cover assembly for 440-series, 1 x sprocket clutch drum, 1 x clutch assembly, 2 x bar nuts.
• Recommended tools: torque wrench, clutch holding tool or punch, socket set, screwdrivers, and cleaning brush.
• Installation time: generally 30–90 minutes depending on experience and access.
• Follow Husqvarna service or parts manual steps and torque specs for safe reassembly.

How durable and reliable is the replacement kit?

Adefol manufactures this kit to align with rigorous OEM standards so the materials and tolerances are chosen for heavy-duty use. The clutch drum and cover are built for impact resistance and wear life typical of demanding cutting tasks, though longevity depends on maintenance and operating conditions.

• Constructed from high-strength metals for wear and impact resistance.
• Engineered to meet OEM part geometry and fit standards for reliable function.
• Tested for assembly compatibility with the linked Husqvarna models.
• Quality support available — contact Adefol if any issue arises.

Who this is for: This clutch drum kit and cover assembly is intended for owners, professional arborists, and repair technicians who service Husqvarna 435 and 440 chainsaws and want a complete, OEM-compatible replacement set. Choose this if you need to fix clutch slippage, restore chain braking, or replace worn sprocket teeth and want a bundled solution that includes the clutch cover and bar nuts for efficient, single-stop repairs.