The Honda 90206-Z6L-000 Tappet Adjusting Nut is a genuine OEM component designed for a wide range of Honda engines, generators, and lawn mowers, including GX630, GX660, GX690, GX700, GX800, GCV170, GCV200, GXV630, GXV660, GXV690, EB10000, EB2800, EG2800, HRN216, and HRX217 equipment. As a direct Honda OEM part, it is manufactured to the same specification. Verify your unit's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks across this broad range of models.
Key Features
- Genuine OEM Valve Adjustment Hardware — sourced directly from Honda, this nut delivers the thread engagement and locking retention that precise tappet clearance adjustment demands.
- Correct Tappet Clearance Retention — a properly functioning tappet adjusting nut holds the valve clearance setting in place after adjustment; a worn or out-of-specification nut allows clearance to drift, leading to noisy valvetrain operation and reduced engine efficiency.
- Broad OEM Fitment — listed for horizontal shaft GX-series engines, vertical shaft GCV and GXV-series engines, Honda generators including the EB10000, EB2800, and EG2800, and HRN216 and HRX217 lawn mowers.
- Serial Number Verification Recommended — Honda supersedes hardware at production breaks across this model range; confirm your machine's serial number against the fitment table to ensure this is the correct specification for your unit.
The tappet adjusting nut is a small but critical piece of valve adjustment hardware in Honda's OHV engines. During a valve clearance service, the rocker arm adjuster screw is set to the correct gap and the tappet adjusting nut is tightened down to lock that setting in place. If the nut is worn, cross-threaded, or no longer holds torque, the adjuster screw can back out over time — causing valve clearance to shift outside specification, which results in hard starting, loss of power, and accelerated valve and seat wear. Replacing it with a genuine Honda part ensures the adjustment stays exactly where it was set.
Part Details
| Part Number | 90206-Z6L-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Tappet Adjusting Nut |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB10000 | All |
| Horizontal Shaft Engine | GX630, GX660, GX690, GX700, GX800 | All |
| Inverter Generator | EB2800, EG2800 | All |
| Lawn Mower | HRN216, HRX217 | All |
| Vertical Shaft Engine | GCV170, GCV200, GXV630, GXV660, GXV690 | 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.
