# Star Trac 9-7631-MUSAP0 Treadmill Stop Switch with Wire Harness (KP231)

## Product Introduction

The Star Trac 9-7631-MUSAP0 Treadmill Stop Switch with Wire Harness is a treadmill control part designed to stop the equipment during operation. This assembly includes the stop switch and its connected wire harness, making it suitable for servicing a compatible Star Trac treadmill when the existing stop-control component needs replacement. The product is listed under the Key Pads category and carries the product code KP231.

A functioning stop switch provides an important way to stop a treadmill when needed. If the original switch is damaged, worn, or no longer operates correctly, installing a matching replacement part can help restore the treadmill’s stop-control function. Before ordering, compare this part with the switch and wiring currently installed on your machine.

## Product Details and Benefits

This product is identified as the \*\*Star Trac 9-7631-MUSAP0 Treadmill Stop Switch with Wire Harness\*\*. The assembly contains:

\- Stop switch for a treadmill  
\- Attached wire harness  
\- Star Trac part reference: \*\*9-7631-MUSAP0\*\*  
\- Local product name and SKU: \*\*KP231\*\*  
\- Product category: \*\*Key Pads\*\*  
\- Barcode: \*\*KP231\*\*

The integrated wire harness provides the connection associated with the stop-switch assembly. Purchasing the switch and harness together may help simplify part identification when the original assembly requires replacement. It also gives the repair technician a single listed component to compare against the treadmill’s existing stop control.

This part is intended for service and repair use. It does not represent a complete treadmill, console, or full keypad assembly. The product listing identifies it specifically as a treadmill stop switch with wire harness, so buyers should confirm that they need this control component rather than another console or safety-related part.

## Compatibility and Applications

The Star Trac 9-7631-MUSAP0 stop switch with wire harness is associated with Star Trac treadmill equipment. Its listed part reference is \*\*9-7631-MUSAP0\*\*, and its product code is \*\*KP231\*\*. Use it when servicing a compatible Star Trac treadmill that requires this specific stop-switch and harness assembly.

Compatibility should be confirmed by matching the part number, switch design, wiring arrangement, and existing component on the treadmill. The available product information does not provide a complete list of compatible treadmill models, equipment series, connector details, wire length, dimensions, or installation instructions. Do not assume that every Star Trac treadmill uses this part.

## Why Choose This Product

Choose this Star Trac treadmill stop switch when the 9-7631-MUSAP0 reference and KP231 identification match the part required for your repair. The included wire harness keeps the listed assembly together and helps distinguish it from a stop switch sold without wiring. It can support maintenance work where the treadmill’s existing stop-control component no longer functions as intended.

## Before You Buy

Verify the following before placing an order:

\- Brand: \*\*Star Trac\*\*  
\- Part reference: \*\*9-7631-MUSAP0\*\*  
\- SKU and barcode: \*\*KP231\*\*  
\- Product type: \*\*Treadmill stop switch with wire harness\*\*  
\- Existing switch and harness match the product shown or described

The listing does not specify dimensions, materials, color, warranty, condition, or a confirmed model-by-model compatibility list. Confirm those details with your equipment documentation or a qualified service professional if they are important to the repair.

## Details

- **Price:** 49.99 USD
- **Vendor:** Star Trac
- **Type:** Key Pads
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 49.99 USD | In stock |

## Images

- KP231
- KP231
- KP231
- KP231
- KP231
- KP231

## Additional Information

- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/star-trac-9-7631-musap0-treadmill-stop-switch-with-wire-harness-kp231)
> Updated: 2026-08-29