The Honda 16562-ZN2-010 Throttle Return Spring is a genuine OEM component designed for GX620 and GX670 horizontal shaft engines and GXV610, GXV620, and GXV670 vertical shaft engines. As an authentic Honda part, it meets the original engineering specification, ensuring the throttle linkage behaves exactly as Honda intended. This spring is a direct replacement for a worn or broken original, and confirming part number 16562-ZN2-010 against the serial number on your engine before ordering is the best way to ensure a correct match.
Key Features
- Genuine OEM Tension — manufactured to Honda's original spring rate, delivering the crisp throttle return action the fuel system depends on for consistent governor response
- Broad Engine Fitment — covers GX620 and GX670 horizontal shaft engines alongside GXV610, GXV620, and GXV670 vertical shaft engines; verify your engine's serial number against the fitment table to confirm the correct application
- Throttle Snap and Idle Stability — a fatigued or broken throttle return spring causes sluggish throttle response, hunting at idle, or a throttle plate that fails to close fully; replacing this spring restores clean, predictable engine control
The throttle return spring pulls the throttle plate or throttle lever back to the closed or idle position whenever the operator or governor releases input. Without adequate spring tension, the throttle cannot return promptly, which disrupts the governor's ability to regulate engine speed under changing load. On large-displacement twin-cylinder engines like the GX620, GX670, GXV610, GXV620, and GXV670, stable governor control is especially important because the engines are commonly called on to maintain steady output under sustained or variable loads. A spring that has lost tension, taken a set, or broken entirely will produce erratic RPM, difficult starting, or runaway throttle behavior — making timely replacement an essential part of routine fuel system maintenance.
Part Details
| Part Number | 16562-ZN2-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Throttle Return Spring |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX670 | 1002219-9999999 |
| Horizontal Shaft Engine | GX620 | All |
| Vertical Shaft Engine | GXV610, GXV620, GXV670 | 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.
