The Wacker Neuson Diaphragm Lever Spring is a genuine OEM component designed for BS-series gasoline vibratory rammers including the BS30, BS45YA, BS52Y, and BS65Y models. As a direct OEM replacement, part is manufactured to the same specifications as the original, ensuring correct lever tension and diaphragm response within the carburetor fuel system. This spring is confirmed to fit multiple BS-series configurations across various shoe sizes, from 152mm/6in up to 280mm/11in. Keeping this small but critical component in good working order helps maintain consistent fuel delivery and engine response on the job.
Key Features
- Genuine OEM Spring Tension: — Manufactured to the original tension specification, so the diaphragm lever operates with the correct mechanical resistance — no guesswork on calibration.
- Direct Carburetor Drop-In: — Engineered to seat into the carburetor lever assembly exactly as the original, with no trimming or adjustment needed during installation.
- Broad BS-Series Compatibility: — Fits BS30, BS45YA, BS52Y, and BS65Y vibratory rammers across multiple machine configurations and shoe sizes.
- Consistent Fuel Metering: — A correctly tensioned diaphragm lever spring maintains proper fuel flow to the engine; a worn or broken spring can cause hard starting, erratic idling, or loss of power under load.
- Fuel System Integrity: — Using the correct OEM spring in a carburetor fuel circuit helps prevent unmetered fuel delivery, which is important for safe, stable engine operation on vibratory rammers used in trench and cohesive soil compaction.
The diaphragm lever spring sits inside the carburetor and controls the movement of the fuel metering diaphragm. It applies the precise mechanical tension needed to regulate how much fuel enters the engine in response to throttle demand. When this spring weakens, breaks, or loses its set, the diaphragm cannot respond correctly — resulting in symptoms like rough idling, poor throttle response, or the engine failing to maintain power during compaction strokes. Replacing a fatigued spring restores proper fuel metering and gets the rammer running cleanly again.
Part Details
| Part Number | 5000037758 |
|---|---|
| Old Part Number | 0037758 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diaphragm Lever Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Variable Speed Vibratory Ramme r, 280mm/11in Shoe | BS65Y | 5000007567, 5000007566 |
| BS30 | BS30 | 5000005216 |
| Vibratory Rammer with 152mm/6i n Shoe | BS45YA | 5000007558 |
| Vibratory Rammer with 254mm/10 in Shoe | BS52Y | 5000007559, 5000007560, 5000007609 |
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.
