The Wacker Neuson Adjustment Screw is a genuine OEM component designed for the LTN4Y, LTN5Y, APT4S, and APT4T series light towers and pumps. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original — ensuring it fits and functions the same way the factory intended. Compatibility spans a broad range of LTN4Y and LTN5Y light tower variants, including cold weather, 60 Hz, 120V, and special-application configurations, as well as APT4S and APT4T pump units including surge brake, electric brake, and cold weather versions. Confirm your model number before ordering to ensure the correct fitment for your machine.
Key Features
- Genuine OEM Thread and Torque Accuracy — Machined to the exact thread pitch and dimensional tolerances of the original screw, so adjustment settings hold correctly under operating conditions.
- Drop-In Installation — Matches the original mounting point and fastener interface, allowing direct installation without reworking or re-tapping the mating component.
- Wide Series Compatibility — Fits LTN4Y and LTN5Y light tower variants as well as APT4S and APT4T pump series, covering a large portion of Wacker Neuson's portable equipment lineup.
- Consistent Calibration Control — A functioning adjustment screw keeps operating parameters dialed in; a worn or damaged screw can cause settings to drift, leading to inconsistent machine output or performance.
- Fuel System Relevance — On pump and light tower applications, adjustment screws are often part of the fuel or throttle control circuit; using the correct OEM part helps maintain proper fuel delivery and engine response.
An adjustment screw is a precision fastener used to set or fine-tune an operating parameter within a machine — such as fuel mixture, throttle position, or valve clearance. It works by advancing or retracting against a mating surface to control flow, tension, or mechanical travel. When this screw becomes worn, stripped, or damaged, accurate adjustment is no longer possible, which can result in rough running, poor output, or the inability to hold a set position during operation.
Part Details
| Part Number | 5200019891 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Adjustment Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTN5Yp | LTN5Yp | 5100069549 |
| LTN5Y SA | LTN5Y SA | 5100069548 |
| LTN4Y | LTN4Y ME | 5100069545 |
| LTN4Y 60 Hz | LTN4Y 60Hz | 5100069546 |
| LTN4Y SA | LTN4Y SA | 5100069547 |
| LTN4Y | LTN4Y | 5100073603 |
| LTN5Ypk | LTN5Ypk | 5100077880 |
| LTN4Y RH | LTN4Y RH | 5100077620 |
| LTN5Yp HD | LTN5Yp HD | 5100079429 |
| LTN5Y | LTN5Y | 5100069550 |
| LTN5Ypa | LTN5Ypa | 5100069551 |
| LTN5Y CH | LTN5Y CH | 5100069552 |
| LTN5Y UK | LTN5Y UK | 5100069553 |
| LTN4Y 120V/60Hz | LTN4Y 120V/60Hz | 5100075978 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
