Stens Blade Adapter for Toro Recycler Mowers 400-320 — 1" Spindle Fit, OEM Replacement for 2002+ Models

Stens Blade Adapter 400-320 is a direct-fit replacement for Toro Recycler mowers (2002 and newer), matching OEM fit and function when installed with the required OEM washer.

This Stens blade adapter is engineered to restore secure blade mounting on compatible Toro Recycler lawn mowers. It replaces Toro part numbers 104-8687, 104-8695, and 106-3987 and installs on spindles with a 1-inch crank diameter. Stens parts are packaged and labeled for dealer-level quality so you can repair with confidence.

Will this blade adapter fit my Toro Recycler mower?

If your Toro Recycler is a 2002 model or newer and the spindle uses a 1-inch crank diameter, this adapter is designed to fit. Always verify the mower’s OEM part number or measure the crank before ordering to ensure compatibility.

• Compatible with Toro Recyclers, model years 2002 and up.
• Direct replacement for Toro OEM numbers 104-8687, 104-8695, 106-3987.
• Requires a 1" crank diameter on the spindle.
• Confirm fit by checking your mower’s parts diagram or existing adapter markings.

How do I install the Stens 400-320 adapter correctly?

Installation is straightforward for anyone familiar with blade and spindle work, but always follow safety precautions: disconnect spark plug and secure the mower. The adapter must be positioned on the 1" crank and fastened using the OEM washer specified by Toro to achieve proper clamping and safe blade retention.

• Disconnect spark plug and stabilize the mower before service.
• Slide the adapter onto the 1" crank diameter spindle.
• Use the original equipment manufacturer (OEM) washer during final assembly.
• Tighten to Toro torque specs and inspect for runout.

What materials and quality can I expect from this Stens replacement part?

Stens designs aftermarket parts to meet or exceed OEM performance for routine maintenance and repair. The 400-320 blade adapter is manufactured to strict tolerances to ensure a secure blade fit and reliable operation under normal mowing conditions.

• Precision-machined to match OEM dimensions and fit.
• Durable construction for repeated assembly and use.
• Packaged with Stens branding for dealer-level quality assurance.
• Intended for replacement of specific Toro OEM part numbers.

Why is the OEM washer required when using this adapter?

The OEM washer is a small but critical component that ensures proper blade clamp and load distribution on the spindle. Using the specified washer prevents premature loosening, reduces wear, and maintains safe blade retention during operation.

• OEM washer preserves correct clamp geometry under torque.
• Prevents concentrated stress that can deform the adapter or shaft.
• Helps maintain manufacturer-recommended torque and safety margins.
• Always replace damaged washers with the OEM equivalent.

Who is this for: The Stens 400-320 blade adapter is for homeowners, landscapers, and service technicians who need a reliable, direct-fit replacement for Toro Recycler decks from 2002 onward. Choose this part when you need an OEM-number-equivalent adapter for safe blade attachment, and make sure to use the original Toro washer during installation for proper performance.