## Star Trac 9-3561-MUSAP0 Treadmill Lower Motor Control Board
The Star Trac 9-3561-MUSAP0 Treadmill Lower Motor Control Board ASM-ACD1U-4C is a preowned lower motor control board for compatible Star Trac treadmill equipment. This electronic assembly helps control the treadmill’s lower motor system and may be needed when the original control board has failed, become damaged, or requires replacement. It provides a practical option for equipment repair and service when the part number and assembly designation match the board already installed in the treadmill.
This Star Trac treadmill motor control board is identified by part number **715-3617** and SKU **BP654**. The assembly designation is **ACD1U-4C**, and the product model reference is **9-3561-MUSAP0**. These identifiers help service technicians, repair businesses, and equipment owners confirm whether the board matches their treadmill before ordering.
Product Details and Benefits
This product is a **lower control board assembly** designed for the motor control section of a Star Trac treadmill. The board works as part of the treadmill’s lower electrical system, which supports motor operation and communication between the equipment’s control components. Replacing a faulty board can help restore the treadmill’s intended control system when the board is the source of the problem.
Because this is a preowned component, it may suit customers looking for a replacement part for an existing Star Trac treadmill rather than purchasing a complete machine or a new control assembly. It can also serve as a service part for treadmill repair professionals, fitness equipment technicians, and facilities that maintain commercial exercise equipment.
The product is supplied under the following identifiers:
- **Brand:** Star Trac
- **Product type:** Treadmill lower motor control board assembly
- **Model or assembly reference:** 9-3561-MUSAP0 / ACD1U-4C
- **Part number:** 715-3617
- **SKU and barcode:** BP654
- **Condition:** Preowned
Compatibility and Applications
This lower motor control board is associated with **Star Trac treadmill equipment** and is intended for use as a replacement lower motor control component. It is most suitable for a treadmill that requires the Star Trac **9-3561-MUSAP0** assembly, **ACD1U-4C** board designation, or **715-3617** part number.
Use the part number, assembly reference, and the existing board’s markings to compare the replacement with your equipment. The product listing does not provide a complete list of compatible treadmill models, so customers should not rely on brand name alone when confirming fit.
Why Choose This Product
Choosing the correct replacement control board can help simplify treadmill repairs and reduce unnecessary part substitutions. This Star Trac board offers a specifically identified replacement option for equipment that uses the same part and assembly references. Its preowned condition may also make it appropriate for repair projects where a matching used component is required.
Before You Buy
Confirm that your treadmill requires **Star Trac part 715-3617**, SKU **BP654**, or the **9-3561-MUSAP0 / ACD1U-4C** assembly before ordering. Compare the markings on your existing lower motor control board and consult a qualified fitness equipment technician if you are unsure about compatibility or installation. No dimensions, warranty details, or installation accessories are provided in the product information.
