1. Product Overview
This manual provides instructions for the MTZUL 959P3 Washer Idler Lever and Belt Kit. This kit is designed to replace worn or damaged components in compatible washing machines, ensuring proper drum rotation and reducing operational noise. The components are manufactured from high-quality rubber and metal, offering enhanced wear and corrosion resistance for consistent performance in various conditions.

Image 1.1: Complete MTZUL 959P3 Washer Idler Lever and Belt Kit.
2. Product Components
The 959P3 washer pulley kit includes the following components:
- Idler Pulley (Part #38225P)
- Serrated Belt (Part #38174)
- Idler Lever Spring (Part #202032)
- Idler Lever (Part #38011)
- Washers (Part #81392, #504082 x2, #52549 x2)
- Retaining Ring (Part #23748)
- Nuts (Part #52566, #28803)

Image 2.1: Detailed view of the 959P3 Washer Pulley Kit components.

Image 2.2: Upgraded 38174 Washer Drive Belt with serrated design.
3. Compatibility
This 959P3 washer idler pulley and belt tensioner kit is compatible with various commercial top-load washers from brands such as ALLIANCE Laundry Systems, Speed Queen, Huebsch, Ipso, Cissell, Primus, Unimac, and AMANA Econo-Wash.
It serves as a direct replacement for the following part numbers: PRM959P3, UNMC959P3, AP4489045, 2020782, and PS12661973.
Compatible Models Include:
AWS01NW, AWS45NW, AWS53NW, AWNA11SP111TW01, AWNE82SP113CW01, AWNE92SP123DW01, LWB19M*-1109, LWN311PP111NW22, LWN311SP111TW01, LWN432PP113FW28, LWN432SP115CW01, LWNE22SP115CW01, LWNE52PP113ZW01, LWS01N*, LWS04N*, LWS16M*-3300, LWS16N*-1122, LWS17M*-3322, LWS45N*-1130, LWT42N*-1100, SWNBC2PP112TQ01, SWNBC2SP112TQ01, SWNBX1SP122DW01, SWNBX2SP113FW01, SWNDC2SP113TW01, SWNLC2AP112TW01, SWNLX1SP542DW01, SWNLX2AP112TW02, SWNLX2SP301AW01, SWNLY2AP112TW01, SWNMN2SP112CW01, SWNNC2HP113TQ01, SWNNE2HP113CW15, SWNNX2AP113TW15, SWNNX2HP113TW04, SWNSX1PP112TQ01, SWNSX2PP113FW01, SWNSX2SP115CW02, SWNWC2HP115TW42, SWNWX2SP115TW02, SWNWY2AP112TW11, SWNYC2SP115TW02, MWN311SP111TW06, NWNNX2SP125MW01, NWNSX2SP123MW01, NWT721M1126, NWT811N5422, NWT911N5422, NWTF21M1126, NWTF21N1126, DWN412SP111CW01, DWN432SP113CW04, HWLX21N1102, HWNBC2PP112TW01, HWNBC2PP113TW01, HWNBE2SP112CW01, HWNBX2SP113FW01, HWNBY2SP112CW01, HWNKC2SP116TW01, HWNKX2SP115CW01, HWNLY2SP112CW01, HWNMN2PP115TW01, HWNMN2SP115TW01, HWNNE2AP113CW04, HWNNE2HP116CW01, HWNSX1PP112TW01, HWNSX2PP112TQ01, HWNSX2SP112CW01, HWNZC2SP115TW01, HWT021N1102, HWT111N1102, HWT121M1123, HWT221N1127, HWT921N1127, HWTB21N1102, HWTR21N1102, HWTT21N1102, HWTX21N1102, HWTZ20M, HWTZ20N, BWT820, BWT820N1102, BWT920, BWT920N1102, CWN311SP111CW01, CWN412SP111CW01, JWT110M, JWT110N, JWT810N5400, JWT820N, JWT910N, JWT920N, PWNBC2PP112TG02, PWNBC2PP113TG02, PWNBC2PP115TG02, PWNBX2PP115CW02, PWNBX2PP115TG02, SWL520N, SWL521N, SWLB20N, SWLB21N, SWLF20N, SWLF21N, SWLT20N, SWLT21N, SWLY20N, SWLY21N, SWT111, SWT911, SWTX21, UWT021M, UWT021N, UWT821, UWT821*N1102, YWN311PP111CW01, YWN321SP541RW01, ZWN311SP111CW01, ZWN412SP111CW01.
4. Installation Instructions
Safety Warning: Before performing any maintenance or installation, always unplug the washing machine from its power source and turn off the water supply to prevent electric shock or water damage.
Professional tools are required for installation. Follow these steps for proper DIY installation of the 959P3 Washer Pulley Kit:
- Remove the Washing Machine Motor: Carefully access and remove the washing machine motor.

Image 4.1: Step 1 - Removing the washing machine motor.
- Take Off the Water Pump: Disconnect and remove the water pump.

Image 4.2: Step 2 - Taking off the water pump.
- Assemble and Replace Pulley Kit: Install the new idler lever and pulley, ensuring the serrated belt is correctly routed around the motor and pulley.

Image 4.3: Step 3 - Assembling and replacing the pulley kit.
- Check the Installation: Verify that all components are securely in place and the belt has proper tension.

Image 4.4: Step 4 - Checking the installation.
5. Maintenance
To ensure optimal performance and longevity of your washing machine, regularly inspect the idler lever and belt for signs of wear, cracking, or looseness. Replacing worn components promptly helps maintain the stable rotational speed of the drum, reduces energy consumption, and prevents potential damage to other parts of the appliance. The high-quality materials of this kit are designed for durability, but periodic checks are recommended.
6. Troubleshooting
This replacement kit is designed to address common issues related to the washer's drive system. Consider replacing your idler lever and belt kit if you experience any of the following symptoms:
- The idler pulley kit is loose or visibly worn.
- The washing machine drum produces unusual noise during operation.
- The washing machine drum is not rotating, or its rotation is slow and inconsistent.

Image 6.1: Symptoms addressed by the 959P3 Washer Idler Lever and Belt Kit.
7. Specifications
| Part Number | 959P3 |
| Item Weight | 10.2 ounces |
| Product Dimensions | 7.87 x 6.57 x 1.82 inches |
| Included Components | 959P3 Idler Kit with Serrated Belt |
| Manufacturer | MTZUL |
8. Warranty Information
This MTZUL 959P3 Washer Idler Lever and Belt Kit comes with a 2-year warranty from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use.
9. Support
For further assistance, technical support, or inquiries regarding this product, please contact MTZUL customer service. Refer to the product packaging or the MTZUL official website for contact details.