The Wacker Neuson is a genuine OEM Idle Speed Screw designed for PTS4V centrifugal trash pumps, GPS9700 and GPS8500 portable generators, GS8.5V and GS9.7V generators, and the RD11V hydrostatic double drum vibratory roller. As a factory-sourced component, this screw is manufactured to the exact tolerances specified by Wacker Neuson, ensuring correct carburetor adjustment behavior right out of the box. Fitment covers a broad range of Wacker Neuson engine-powered equipment, including PTS4V(I) pump variants and multiple GPS9700 generator configurations. If your machine is running rough at idle, surging, or struggling to hold a stable low-speed RPM, the Idle Speed Screw is the verified OEM replacement to restore proper throttle control.
Key Features
- Calibrated Throttle Stop Geometry — Engineered to the exact thread pitch and contact profile required for precise carburetor idle adjustment on Wacker Neuson engines.
- Genuine OEM Sourcing — Factory-authorized part manufactured to Wacker Neuson's original specification, so idle speed behavior matches the engine's designed operating range.
- Broad Equipment Compatibility — Fits PTS4V and PTS4V(I) centrifugal trash pumps, GPS8500 and GPS9700 portable generators, GS8.5V and GS9.7V generators, and the RD11V vibratory roller.
- Stable Idle Restoration — A worn or misadjusted idle speed screw causes engine surging, rough low-speed running, or stalling under light load; replacing it with the correct OEM part brings idle RPM back into spec.
- Direct Carburetor Installation — Threads directly into the carburetor body as a drop-in replacement with no re-tapping or modification to the throttle linkage or body required.
The idle speed screw is a small but critical carburetor adjustment component that sets the minimum throttle position when the engine is running at low load. By controlling how far the throttle plate stays open at rest, it determines the engine's idle RPM — keeping it high enough for smooth, stable operation without unnecessary fuel consumption or excessive wear. When this screw is damaged, worn, or backed out of position, the engine can surge, stall, or refuse to settle at a consistent idle, which directly affects the performance of pumps, generators, and compaction equipment that depend on steady engine output across varying load conditions.
Part Details
| Part Number | 5000116537 |
|---|---|
| Old Part Number | 0116537 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Idle Speed Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683, 5000620971, 5100031221 |
| Portable Generator with Electr ic Start | GPS9700 | 5000008287, 5000620264, 5200005042, 5000620973, 5100036768 |
| 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 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
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.
