The Honda 73521-770-000 Primary Driven Sprocket (23T) is a genuine OEM component designed for FR600 and FR800 tillers. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring the drive system operates exactly as intended. This sprocket is listed for both the FR600 and FR800 — verify your unit's serial number against the fitment table to confirm this 23-tooth variant is correct for your machine before ordering.
Key Features
- Correct Tooth Count — the 23-tooth specification is a critical match point; an incorrect sprocket count will alter drive ratio and tilling performance, so confirming the 23T designation against your machine's parts diagram is essential
- Genuine Honda OEM — sourced directly from Honda, this part carries the same design and dimensional tolerances as the original, keeping the drivetrain operating as Honda engineered it
- Fits FR600 and FR800 Tillers — listed for both models, though Honda supersedes parts at serial number breaks; check your machine's serial number against the fitment table to confirm this is the correct sprocket for your specific unit
- Drive System Integrity — a worn or damaged primary driven sprocket causes chain slippage, uneven power transfer, and loss of tilling engagement; replacing it with this OEM part restores smooth, consistent drive operation
The primary driven sprocket is a core component of the tiller's chain-drive transmission, transferring power from the engine through the drive chain to propel the tilling tines. Working in mesh with the drive chain, the sprocket's tooth profile and count determine how power is stepped down and delivered to the working components. When the sprocket teeth wear, become chipped, or the sprocket is damaged, the drive chain loses positive engagement — resulting in slipping, rattling, and reduced or lost tilling force. Replacing a worn sprocket with a correctly specified OEM part restores full drivetrain engagement and ensures the tiller delivers consistent soil-working performance.
Part Details
| Part Number | 73521-770-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Primary Driven Sprocket (23T) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Tiller | FR600, FR800 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
