The Honda 17850-VF9-B12 Throttle Lever Assembly is a genuine OEM component designed for HHE31 stick edgers and UMK422 and UMK431 trimmers. As a direct OEM replacement, this assembly is engineered to Honda's original specifications, ensuring the throttle response and control feel your equipment was built to deliver. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and more than one variant may share the same model designation.
Key Features
- Genuine OEM Throttle Control — sourced directly from Honda, this assembly matches the original lever geometry and pivot action that precise engine speed control depends on
- Direct OEM Replacement — replaces the original unit on HHE31 stick edgers and UMK422 and UMK431 trimmers with no adaptation needed, restoring the factory control feel
- Serial Number Verification Recommended — Honda updates parts at production breaks, so check your unit's serial number against the fitment table to confirm this is the correct assembly for your machine
- Restored Throttle Response — a worn or damaged throttle lever assembly leads to imprecise engine speed control, making clean cutting and edging difficult; this replacement brings response back to spec
The throttle lever assembly is the hand-operated control that regulates engine speed on handheld outdoor power equipment. When the operator squeezes or moves the lever, it tensions a cable connected to the engine's throttle, opening or closing the carburetor to increase or decrease fuel and air delivery — and with it, blade or cutting head speed. A worn, cracked, or broken lever assembly makes it impossible to hold a consistent engine speed, reducing cutting performance and making the tool harder to control safely. Replacing this assembly restores the direct, predictable throttle feel the equipment was designed to provide.
Part Details
| Part Number | 17850-VF9-B12 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Throttle Lever Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Stick Edger | HHE31 | All |
| Trimmer | UMK422, UMK431 | 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.
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