The Wacker Neuson Governor Complete is a genuine OEM component designed for BFS735 series gasoline-powered floor saws and WP1540A and WP1550A series vibratory plate compactors. As a direct OEM replacement, this part is manufactured to the same specifications as the original, ensuring proper engine speed regulation across all covered models. Compatible fitment spans multiple BFS735 configurations as well as WP1540Aw and WP1550Aw variants, including SUNBELT-sourced units. Verify your model and machine number before ordering to confirm this is the correct governor assembly for your equipment.
Key Features
- OEM-Spec Speed Control Tolerancing — Built to the exact mechanical travel and spring tension of the original governor assembly, ensuring consistent engine speed response under load.
- Drop-In Assembly Replacement — Supplied as a complete governor unit, replacing the full assembly in a single service step without sourcing individual sub-components.
- Broad Fitment Across Two Machine Families — Covers BFS735 gasoline floor saws and WP1540A / WP1550A vibratory plate compactors, including US and CN model variants.
- Stable Engine RPM Under Variable Load — A functioning governor holds engine speed steady as cutting or compaction resistance changes; a worn unit causes hunting, surging, or bogging that degrades work output.
- Fuel System Safety Compliance — Correct governor operation prevents over-revving, protecting the engine and operator in both saw and compactor applications where uncontrolled RPM is a hazard.
The governor controls engine speed by automatically adjusting the throttle in response to changes in load. When the engine is asked to do more work — driving a saw blade through concrete or a compactor plate through dense aggregate — the governor opens the throttle to maintain the target RPM; when the load drops, it closes it back down. Without a properly functioning governor, the engine either surges and over-revs under light load or bogs and stalls under heavy load, making the machine unreliable and potentially unsafe. Replacing a worn or damaged governor complete restores precise speed regulation and protects the engine from the stress of uncontrolled RPM swings.
Part Details
| Part Number | 5100039031 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Governor Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BFS735 | BFS735 | 5100029228, 5100054573 |
| BFS735 | BFS735 CN | 5100042681 |
| WP1540Aw | WP1540Aw US | 5100018327 |
| WP1550Aw | WP1550Aw US | 5100018324 |
| WP1540A | WP1540A US | 5100018328 |
| WP1550A | WP1550A US | 5100018325 |
| WP1550A | WP1550A | 5100062423 |
| WP1550Aw | WP1550Aw | 5100062424, 5100066158 |
| Gasoline Powered Floor Saw | BFS 735A | 5100001816 |
| Floor saw BFS735 | BFS 735 | 5100009932 |
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.
