The Wacker Neuson Throttle Return Spring is a genuine OEM component designed for the RD12A-90 tandem roller series and CRT36-26A and CRTv36-26A power trowel series, as well as the BFS 2020AS saw. Sourced directly through Wacker Neuson's authorized parts network, this is the exact spring specified for these machines at the factory. Fitment also extends to foldable ROPS variants of the RD12A-90 and wheel kit configurations of the CRT36-26A and CRTv36-26A, making a versatile stock item for fleets running mixed Wacker Neuson equipment.
Key Features
- Correct Spring Rate for Positive Throttle Snap-Back — Wound to the OEM-specified tension, this spring delivers the crisp, consistent return action the throttle linkage on these machines requires.
- Genuine OEM Part — Manufactured to Wacker Neuson's own production standards, so you get the same part that left the factory — no guesswork on material grade or coil geometry.
- Broad Wacker Neuson Fitment — A single part number covers RD12A-90 double drum rollers, CRT36-26A and CRTv36-26A power trowels (including wheel kit and standard configurations), and the BFS 2020AS saw.
- Drop-In Installation — Matches the original mounting points and hook ends exactly, so the spring seats and clips into place the same way the factory-installed unit did.
- Throttle Control Integrity — A properly tensioned return spring ensures the throttle closes fully when released, maintaining consistent engine speed control and preventing unintended engine run-on.
- Operator Safety Compliance — A failed or stretched throttle return spring can prevent the engine from returning to idle on demand. Replacing with the correct OEM spring restores the intended throttle-release behavior required for safe machine operation.
The throttle return spring pulls the throttle control back to the idle or closed position as soon as the operator releases input — on roller, trowel, and saw applications alike. Without adequate spring tension, the throttle may hang open, causing the engine to over-rev or fail to return to idle when the operator lets go of the control. A worn or broken spring can also produce erratic engine response, making the machine harder to control and accelerating wear on the throttle linkage components around it.
Part Details
| Part Number | 5000226573 |
|---|---|
| Old Part Number | 0226573 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Throttle Return Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 ROLLER,DBL DRUM,GRN | RD12A-90 | 5000620369, 5000620058, 5000620320 |
| BFS 2020AS SAW | BFS 2020AS | 5000620086 |
| CRT36-26A Trowel w/Wheel Kit | CRT36-26A | 5000621000, 5000620999, 5000621001, 5000621002 |
| CRTv 36-26A Trowel, w/Wheel Kit | CRTv36-26A | 5200008544, 5200008545, 5200008546 |
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.
