The Honda 16561-ZM1-000 Governor Spring is a genuine OEM replacement designed for GCV135 vertical shaft engines. Sourced directly from Honda, this spring is manufactured to the exact specification required to restore proper governor operation on your engine. If your engine is hunting, surging, or failing to hold a steady speed under load, a worn or broken governor spring is a common cause — and this is the correct OEM replacement to address it. Always verify your engine's serial number against the fitment table to confirm this is the right part for your unit.
Key Features
- Genuine Honda OEM Part — manufactured to Honda's exact specification for the GCV135 vertical shaft engine, ensuring the governor system operates as intended
- Restores Speed Stability — a correctly tensioned governor spring keeps engine RPM consistent under varying loads; a fatigued or broken spring leads to hunting, surging, or runaway RPM
- Direct OEM Replacement — this spring replaces part number 16561-ZM1-000 exactly, with no modification needed to fit the existing governor linkage
- Serial Number Verification Recommended — Honda updates parts at production serial breaks, so confirm your GCV135 serial number against the fitment table before ordering
The governor spring is a small but critical component in the mechanical governor system of the GCV135 engine. It works in tension against the governor arm and throttle linkage to set and maintain the engine's target RPM — pulling the throttle open when engine speed drops and allowing it to close as speed recovers. When the spring stretches, weakens, or breaks, the governor loses the ability to regulate speed accurately, and the engine may surge rhythmically, race uncontrollably, or stall under load. Replacing a fatigued governor spring is one of the most straightforward steps in restoring stable, consistent engine performance.
Part Details
| Part Number | 16561-ZM1-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GCV135 | 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.
