The Multiquip 21780 Throttle Magura Model 90 with Kill Switch is a genuine OEM throttle control assembly designed for Multiquip masonry saws and Whiteman walk-behind power trowels, including the MS18E, MS20E, MS18H5.5, MS18H8, MS20H, MS30H, MS30E, CA4HC, and CA5BC. As a factory-sourced component, it delivers the exact fit, function, and safety compliance your equipment requires. DHS Equipment supplies this part direct, so you can be confident you are getting the correct replacement for your machine. Verify your model code against the fitment list before ordering to ensure compatibility.
Key Features
- Genuine OEM Throttle Assembly: — Sourced directly from Multiquip, this Magura Model 90 unit matches the original throttle mechanism in lever feel, cable engagement, and kill switch integration — no guesswork on spec matching.
- Integrated Kill Switch: — The built-in kill switch allows the operator to cut engine power instantly from the handle, a critical safety feature on both masonry saws and walk-behind trowels.
- Direct-Mount Replacement: — Engineered to install on the existing handlebar or control bar position without modification, using the same mounting points and cable routing as the original unit.
- Broad Cross-Family Fitment: — Fits multiple Multiquip equipment families including MS18E, MS20E, MS18H5.5, MS18H8, MS20H, MS30H, MS30E masonry saws, and CA4HC and CA5BC Whiteman walk-behind power trowels.
- Throttle Response Integrity: — A worn or damaged throttle assembly causes erratic engine speed control and unreliable kill switch operation — replacing with the correct OEM unit restores predictable, consistent throttle response across the full RPM range.
The throttle assembly controls the flow of fuel and air to the engine by regulating the carburetor or fuel system in response to operator input at the handle. On equipment like masonry saws and walk-behind trowels, precise throttle control is essential for blade speed management and consistent surface finishing. The integrated kill switch on the Magura Model 90 unit provides an immediate engine stop function directly at the operator's grip — when this switch degrades or the throttle housing cracks, operators lose both fine speed control and the ability to shut down the engine quickly, creating both performance and safety concerns.
For fitment questions or help confirming this part is correct for your machine, contact the DHS Equipment team.
Part Details
| Part Number | 21780 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Throttle Magura Model 90 with Kill Switch |
Compatibility & Fitment
| Name | Model |
|---|---|
| Masonry Saws | MS18E |
| Masonry Saws | MS20E |
| Whiteman Walk-Behind Power Trowels | CA4HC/CA5BC |
| Masonry Saws | MS18H5.5 |
| Masonry Saws | MS18H8 |
| Masonry Saws | MS20H |
| Masonry Saws | MS30H |
| Masonry Saws | MS30E |
| C and CA Series | CA4HC |
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.
