The Honda 16124-ZA8-003 Stop Screw Set is a genuine OEM component designed for Honda EM650 and EX650 generators and the EX350 inverter generator. Sourced directly from Honda, this set matches the original specification and installs without any modification. Honda supersedes parts at serial breaks, so verify your unit's serial number against the fitment table before ordering to confirm this is the correct set for your machine.
Key Features
- Genuine Honda OEM — sourced directly from Honda, ensuring the set matches the original throttle stop geometry and screw specification for accurate engine speed limiting.
- Exact Replacement — replaces the original stop screw set directly under part number 16124-ZA8-003, maintaining correct idle and governed speed settings on your generator.
- Broad Generator Fitment — designed for EM650 and EX650 generators and the EX350 inverter generator; check your serial number against the fitment table to confirm applicability.
- Critical Speed Control — a worn or incorrectly set throttle stop screw causes erratic idle, over-revving, or failure to hold governed speed, affecting the output quality your generator delivers.
The stop screw set is part of the carburetor's throttle stop system, providing a hard mechanical limit that sets the minimum throttle position and prevents the throttle valve from closing beyond the intended idle point. On generators, maintaining the correct idle stop is essential: too low and the engine stalls under light load; too high and no-load voltage and frequency drift outside acceptable range. When the screw is worn, stripped, or missing, consistent idle and governed speed become difficult to maintain, and the generator's output suffers as a result.
Part Details
| Part Number | 16124-ZA8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Stop Screw Set |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EM650, EX650 | All |
| Inverter Generator | EX350 | 1004239-9999999 |
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.
