The Honda 16561-ZN1-830 Governor Spring is a genuine OEM component designed for GX620 and GX670 horizontal shaft engines. As an authentic Honda part, it meets the original design specifications the governor system depends on for accurate throttle control. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks and the correct spring must match your unit's build.
Key Features
- Genuine OEM Tension Spec — sourced directly from Honda, this spring carries the exact tension rating the governor linkage requires to regulate engine speed accurately under load.
- Direct Replacement — installs into the governor assembly without modification, restoring the mechanical connection between the governor and throttle as originally built.
- Fits GX620 and GX670 Engines — designed specifically for these large-displacement horizontal shaft engines; verify your serial number against the fitment table to confirm the correct part for your build.
- Stable Speed Under Load — a stretched or broken governor spring causes the engine to hunt, surge, or run uncontrolled; replacing it restores steady, responsive speed regulation across varying load conditions.
The governor spring is a critical link in the mechanical governor system of the engine. It works in tension against the governor flyweights and throttle linkage to maintain a set engine speed — when load increases and the engine begins to slow, the spring pulls the throttle open to compensate, and when the engine speeds up, the flyweights push back to find balance. When the spring loses tension, stretches, or breaks entirely, the governor loses its reference point: the engine may surge rhythmically, hunt for a stable idle, or race uncontrolled — all conditions that demand immediate attention to protect the engine and whatever equipment it powers.
Part Details
| Part Number | 16561-ZN1-830 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX670 | 1002219-9999999 |
| Horizontal Shaft Engine | GX620 | 1010254-9999999 |
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.
