The Honda 42940-960-770 Left Rear Adjusting Arm is a genuine OEM replacement designed for the HR21 lawn mower. As a direct Honda OEM component, this part is manufactured to the exact specifications of the original, ensuring a proper fit without modification. Confirm your mower's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks for the HR21.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this arm matches the original part's dimensions and geometry for a correct installation on the HR21 lawn mower.
- Height Adjustment Integrity — a worn or bent adjusting arm prevents consistent cutting height on the left rear wheel position; this replacement restores accurate, repeatable deck height control.
- Serial Number Matters — Honda updates part specifications at production breaks, so cross-check your HR21 serial number against the compatibility table to confirm this is the correct arm for your unit.
The left rear adjusting arm is the mechanical link that sets and holds the cutting height at the left rear wheel of the HR21 lawn mower. It allows the operator to raise or lower that corner of the deck by locking into preset height positions. When this arm becomes worn, cracked, or damaged, the rear of the deck may sit unevenly or fail to hold the selected cutting height, resulting in an uneven cut across the mowing path.
Part Details
| Part Number | 42940-960-770 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Left Rear Adjusting Arm |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HR21 | 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.
