The Honda 90206-PM3-004 Tappet Adjusting Nut (Tokai TRW) is a genuine OEM component designed for Honda outboard motors, including BF60, BF75, BF90, BF100, BF115, BF135, BF140, BF150, BF175, BF200, BF225, BF250, BF350, and BFP60 models. As a genuine Honda part, it is manufactured to the exact specification required for proper valve lash adjustment on these four-stroke marine engines. Confirm your outboard's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and this nut is listed across a wide range of models.
Key Features
- Genuine OEM Valve Train Hardware — sourced directly from Honda, this nut locks the tappet adjuster screw to the exact setting required for correct valve lash on your outboard's valvetrain
- Direct OEM Replacement — installs in place of the original tappet adjusting nut with no rework, preserving the adjustment integrity of the valve clearance procedure
- Broad Outboard Fitment — listed for Honda BF and BFP series outboard motors ranging from BF60 through BF350, covering a wide span of four-stroke marine engine families
- Serial Number Verification Recommended — Honda updates parts at defined serial breaks across its outboard lineup; check your engine's serial number against the fitment table to confirm part number 90206-PM3-004 is correct for your unit
- Valve Lash Accuracy — a properly torqued and secured tappet adjusting nut holds valve clearance at the correct setting; a loose or damaged nut allows the adjuster to back off, leading to improper valve timing, rough running, and accelerated wear on valvetrain components
The tappet adjusting nut secures the valve clearance adjuster screw on each rocker arm, locking the screw in position after the correct lash gap has been set between the rocker and the valve stem. On Honda four-stroke outboard motors, maintaining precise valve clearance is essential for smooth combustion, full power output, and long valvetrain service life. When this nut loosens or becomes damaged, the adjuster screw can shift out of position, causing valve clearance to drift and resulting in symptoms such as ticking, hard starting, or a loss of compression over time.
Part Details
| Part Number | 90206-PM3-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Tappet Adjusting Nut (Tokai TRW) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF60, BF75, BF90, BF115, BF135, BF140, BF150, BF175, BF200, BF225, BF250, BF350, BFP60 | All |
| Portable Outboard Motor | BF100 | 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.
