The Honda 16510-ZM0-010 Governor Assembly is a genuine OEM component designed for GCV135, GCV160, GCV170, GCV190, GCV200, and GSV190 vertical shaft engines, as well as HRB216, HRB217, HRC216, HRN216, HRR216, HRS216, HRT216, HRX217, and HRZ216 lawn mowers. As a direct Honda OEM replacement, this assembly matches the original part exactly, giving you the confidence that it will install correctly without modification. If your engine is surging, hunting at idle, or failing to hold a steady speed under load, the Governor Assembly is a primary suspect — and replacing it with the genuine Honda part restores proper speed control. Always confirm your machine's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks.
Key Features
- Genuine OEM Speed Control — sourced directly from Honda, this assembly delivers the correct mechanical response to load changes, keeping engine speed stable across varying demands
- Exact-Fit Replacement — manufactured to the same specifications as the original, this part drops in without reworking linkages or adjusting governor arm geometry
- Broad Vertical-Engine Coverage — fits GCV135, GCV160, GCV170, GCV190, GCV200, and GSV190 vertical shaft engines, including HRB216, HRB217, HRC216, HRN216, HRR216, HRS216, HRT216, HRX217, and HRZ216 lawn mowers
- Serial Number Verification Recommended — Honda updates governor assemblies at production breaks; confirm your unit's serial number against the fitment table to ensure part number 16510-ZM0-010 is correct for your machine
- Restores Steady-State Engine Performance — a worn or damaged governor allows engine speed to hunt, surge, or over-rev; a functioning assembly maintains the RPM the operator sets and protects against over-speed conditions
The governor assembly is the mechanical system responsible for maintaining a consistent engine speed regardless of changes in load. It works by sensing crankshaft speed through a set of flyweights or a pneumatic vane, then adjusting the throttle plate via a linkage to compensate whenever the engine slows under load or speeds up as load is removed. On vertical shaft engines powering lawn mowers — including the GCV and GSV series that drive the HRR, HRX, HRC, and related Honda walk-behind mowers — steady governed speed is critical for consistent blade tip speed and clean cutting performance. When the governor assembly wears, sticks, or loses range of motion, the engine surges rhythmically at idle or loses the ability to recover speed under load, both of which are clear signs that this component needs attention.
Part Details
| Part Number | 16510-ZM0-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Governor Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HRS216 | 1000001-1887052 |
| Lawn Mower | HRC216 | 1028950-9999999 |
| Lawn Mower | HRB216, HRB217, HRN216, HRR216, HRT216, HRX217, HRZ216 | All |
| Vertical Shaft Engine | GCV135 | 1449201-9999999 |
| Vertical Shaft Engine | GCV160 | 3600001-9999999 |
| Vertical Shaft Engine | GCV170, GCV190, GCV200, GSV190 | 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.
