The Wacker Neuson Knob C40 FS is a genuine OEM control knob designed for CT30, CT36, and CT48 series walk-behind concrete power trowels, as well as RS800 series single drum vibratory rollers. As a factory-sourced component, meets the exact material and dimensional standards set by Wacker Neuson for these machines. This knob fits an extensive range of CT-series trowel configurations — including propane, diesel, and electric-start variants across 30 in, 36 in, and 48 in pan sizes — making it a widely applicable service part. Confirm your model number before ordering to ensure a correct, hassle-free installation.
Key Features
- Genuine OEM Construction: — Manufactured to Wacker Neuson's original material and dimensional specs, ensuring the knob seats, threads, and functions exactly as the factory-installed unit did.
- Direct-Fit Replacement: — Replaces the original C40 FS knob with no rework to mounting hardware or surrounding controls, dropping straight into position on the operator panel.
- Broad CT-Series Coverage: — Fits CT30, CT36, and CT48 walk-behind trowel variants — including AGP, ADP, AGT, ADT, BDT, and AVP/AVT variable-speed configurations — as well as RS800, RS800A, RS800H, RS800V, and RSS800A roller models.
- Operator Control Integrity: — A worn or damaged control knob can make precise throttle or speed adjustments difficult; replacing it restores confident, positive control feel for the operator.
The Knob C40 FS is an operator-panel control component used on Wacker Neuson walk-behind trowels and single drum rollers to provide a tactile grip point for adjusting machine functions such as throttle or operational speed. A properly fitted control knob gives the operator a secure, comfortable interface with the machine's controls — critical when working on fresh concrete slabs or compaction passes where precise adjustment matters. When this knob cracks, strips, or goes missing, control feel is compromised; replacing it promptly with the correct OEM part restores full operator confidence and consistent machine response.
Part Details
| Part Number | 5000017609 |
|---|---|
| Old Part Number | 0017609 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Knob C40 FS |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Vibratory Roller | RS800A | 5000006581, 5000630011 |
| Single Drum Vibratory Roller | RSS800A | 5000006582, 5000630012 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP | 5000007596, 5000007595 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP-E | 5000008036, 5000008026 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP | 5000007592, 5000007591 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP-E | 5000008034, 5000007697 |
| 1220mm/48in Walk-behind Trowel | CT48AGP | 5000007602, 5000007603 |
| 1220mm/48in CE Walk-behind Tro wel | CT48AGP-E | 5000008031, 5000008032 |
| 1220mm/48in Walk-behind Trowel | CT48ADP | 5000007598, 5000007599, 5000008199 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADP-E | 5000008027, 5000008028 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT-E | 5000007589, 5000008004 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT | 5000008006, 5000008003 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT-E | 5000007587, 5000008002 |
| 1220mm/48in CE Walk-behind Tro wel | CT48AGT-E | 5000007601, 5000008020 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT | 5000008005, 5000008001, 5000008197 |
| 1220mm/48in Walk-behind Trowel | CT48AGT | 5000008019, 5000008041 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT-E | 5000007590, 5000008008, 5000008226 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT-E | 5000007594, 5000008012 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADT-E | 5000007597, 5000008016 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT | 5000008013, 5000008007, 5000008198, 5000008225, 5000009480 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT | 5000008014, 5000008011 |
| 1220mm/48in Walk-behind Trowel | CT48ADT | 5000008015, 5000008040 |
| 1220mm/48in Walk-behind Trowel | CT48BDT | 5000008017 |
| 915mm/36in Walk-behind Trowel | CT36BDT | 5000008009 |
| 1220mm/48in Variable Speed Wal k-behind Trowel | CT48AVP | 5000009219, 5000009220 |
| 1220mm/48in Variable Speed Wal k-behind Trowel | CT48AVT | 5000009217, 5000009218 |
| Single Drum Vibratory Roller | RS800H | 5000006583 |
| Single Drum Vibratory Roller ( without engine) | RS800 | 5000006585 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVP | 5000009235, 5000009236 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVT | 5000009233, 5000009234 |
| Single Drum Vibratory Roller | RS800V | 5000007187 |
| 915mm/36in Walk-behind Trowel | CT36BDT-E | 5000008010 |
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.
