The Multiquip 21957 Operator Presence Switch Harness is a genuine OEM wiring harness designed for CS24H55E and J3036H55 walk-behind power trowels. This direct-replacement harness restores the electrical connection between the operator presence switch and the trowel's control system, ensuring the machine behaves exactly as it left the factory. Sourced directly from Multiquip, part 21957 is built to the same specifications as the original component your trowel shipped with. Verify your model number against the CS24H55E and J3036H55 fitment data before ordering to confirm compatibility.
Key Features
- Genuine OEM Wiring Integrity — Correct conductor gauge, connector pinout, and insulation grade matched to the original harness specification for the operator presence circuit.
- Direct Plug-In Replacement — Connectors mate to existing switch and control board terminals on CS24H55E and J3036H55 trowels without splicing or adapter wiring.
- Confirmed Fitment — Verified for CS24H55E and J3036H55 walk-behind power trowel models.
- Restores Operator Presence Circuit Function — A damaged or failed harness can cause the trowel to run outside its intended safety parameters; a fresh OEM harness brings the circuit back to full, correct operation.
- Safety-Critical Electrical Component — The operator presence switch circuit is a core protective system on walk-behind trowels; using a correctly rated OEM harness ensures the switch responds as engineered under real working conditions.
The operator presence switch harness carries the electrical signal from the operator presence switch — the control that detects whether the operator is actively engaged with the machine — to the trowel's ignition or control circuit. When the operator releases the handle or steps away, this circuit is what tells the engine to cut out, preventing uncontrolled blade rotation. A cracked, corroded, or broken harness can cause intermittent shutdowns, failure to start, or — more critically — failure of the operator presence system to respond correctly. Replacing a worn harness with a genuine OEM part restores the full integrity of this safety-critical circuit.
Need help confirming fitment or locating additional parts for your CS24H55E or J3036H55 trowel? Contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | 21957 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Operator Presence Switch Harness |
Compatibility & Fitment
| Name | Model |
|---|---|
| International Walk-Behind Power Trowels | CS24H55E |
| Whiteman Walk-Behind Power Trowels | J3036H55 |
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.
Multiquip
Multiquip Part # 48658 - LEVER, OPERATOR PRESENCE SWITCH - Genuine OEM Part
