The Wacker Neuson Float Valve Needle is a genuine OEM component designed for PTS4V centrifugal trash pumps, GPS8500 and GPS9700 portable generators, GS8.5V and GS9.7V portable generators, and the RD11V hydrostatic double drum vibratory roller. As a direct Wacker Neuson OEM part, the is manufactured to the exact tolerances required by each of these machine families, ensuring a direct, no-guesswork installation into the original carburetor float chamber. This needle controls fuel flow at the float bowl, making precision fit critical — an ill-fitting or worn needle leads to fuel overflow, lean running conditions, or hard starting. Confirm your model and serial number before ordering to ensure this part matches your specific machine configuration.
Key Features
- Exact OEM Needle Geometry — Manufactured to Wacker Neuson's original taper and seat specifications, ensuring a fuel-tight seal against the float bowl inlet seat without leakage.
- Direct Carburetor Drop-In — Replaces the original float valve needle in the carburetor assembly with no reworking of the float or seat required.
- Broad Model Coverage — Fits PTS4V trash pumps, GPS8500 and GPS9700 portable generators, GS8.5V and GS9.7V generators, and the RD11V vibratory roller across multiple serial ranges.
- Fuel Flow Stability — A correctly seated needle maintains consistent float bowl fuel level, supporting steady engine speed and efficient combustion under load.
- Fuel System Safety — A worn or damaged float valve needle can allow uncontrolled fuel delivery or overflow into the engine — replacing it promptly is a critical fuel system safety step.
The float valve needle works inside the carburetor's float chamber to regulate how much fuel enters the bowl. As the float rises with the fuel level, it pushes the needle against the inlet seat to shut off flow; as fuel is consumed and the float drops, the needle lifts and allows more fuel in. This constant open-and-close cycle keeps the fuel level stable so the engine receives a consistent air-fuel mixture. When the needle tip wears, develops grooves, or the seat is damaged, the carburetor floods or starves — causing rough running, excessive fuel consumption, or a machine that won't start.
Part Details
| Part Number | 5000118489 |
|---|---|
| Old Part Number | 0118489 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Float Valve Needle |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683 |
| Portable Generator with Electr ic Start | GPS9700 | 5000008287, 5000620264 |
| Portable Generator with Electr ic Start | GPS8500 | 5000008286 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11V | 5000007694 |
| Portable Generator with Electr ic Start | GS8.5V | 5000007661 |
| Portable Generator with Electr ic Start | GS9.7V | 5000007662 |
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.
