Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Sears 25973631 pak-a-potti iv portable toilet

Sears 25973631 pak-a-potti iv portable toilet Parts

Here are the diagrams and repair parts for Sears 25973631 pak-a-potti iv portable toilet, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for 25973631 Pak-A-Potti IV Portable Toilet

  • Cap Wtr Fill for Sears 25973631 - Part 12901

    Unit parts diagram

    Cap Wtr Fill

    Part #12901

    The manufacturer no longer makes this part, and there's no substitute part

  • Tank/almond for Sears 25973631 - Part 13115A

    Unit parts diagram

    Tank/almond

    Part #13115A

    The manufacturer no longer makes this part, and there's no substitute part

  • Cap Hld Tank for Sears 25973631 - Part 12902

    Unit parts diagram

    Cap Hld Tank

    Part #12902

    The manufacturer no longer makes this part, and there's no substitute part

  • Flush Bllows for Sears 25973631 - Part 13315

    Unit parts diagram

    Flush Bllows

    Part #13315

    The manufacturer no longer makes this part, and there's no substitute part

  • Dispenser for Sears 25973631 - Part 13105

    Unit parts diagram

    Dispenser

    Part #13105

    The manufacturer no longer makes this part, and there's no substitute part

  • Portable Toilet Owner's Manual for Sears 25973631 - Part 15223

    #NI

    All parts diagram

    Portable Toilet Owner's Manual

    Part #15223

    The manufacturer no longer makes this part, and there's no substitute part

  • Carry Handle for Sears 25973631 - Part 13119

    Unit parts diagram

    Carry Handle

    Part #13119

    The manufacturer no longer makes this part, and there's no substitute part

  • Cover Assembly for Sears 25973631 - Part 15284A

    Unit parts diagram

    Cover Assembly

    Part #15284A

    The manufacturer no longer makes this part, and there's no substitute part

  • Tank Asm Alm for Sears 25973631 - Part 13110A

    Unit parts diagram

    Tank Asm Alm

    Part #13110A

    The manufacturer no longer makes this part, and there's no substitute part

  • Seat for Sears 25973631 - Part 1326210

    Unit parts diagram

    Seat

    Part #1326210

    The manufacturer no longer makes this part, and there's no substitute part

Sears Pak-A-Potti IV Portable Toilet 25973631 FAQs

For the Sears model 25973631 Pak-A-Potti IV portable toilet, the model number is usually printed on a label on the tank or base. Use that exact model number when searching diagrams and replacement plumbing parts on [how to find your appliance model number (and what it means for parts)].

Where to look on a Pak-A-Potti style portable toilet

Check these common label locations:

  • On the back or underside of the fresh-water tank
  • On the rear or side of the waste holding tank
  • Near the flush pump area or fill cap
  • On the bottom of the base (you may need to tip it carefully when empty)
  • Inside a service access area if your unit has a small cover

What to write down (so parts match)

Record these details exactly as shown on the label:

  • Model number (for example, 25973631)
  • Any revision, series, or suffix characters
  • Brand name (Sears)
  • Any manufacturing code/date code (helpful for part variations)
Label item Why it matters for parts
Model number Matches the correct parts list and diagrams
Suffix/revision Prevents ordering a similar but incompatible part
Manufacturing code Helps narrow down running changes

Why it matters

Portable toilet plumbing parts (seals, valves, caps, pumps) often look similar across models. Using the exact model number helps ensure the correct fit and leak-free sealing.

Last updated: March 2026

To troubleshoot the Sears 25973631 Pak-A-Potti IV portable toilet, start by identifying the symptom (leak, odor, weak flush, or valve sticking) and then isolate whether it comes from the fresh-water side, the waste tank seal, or the slide/flush valve. Most issues are caused by dirty or dry seals.

Quick symptom checklist

  • Leaks at the tank joint: seal/gasket dirty, dry, pinched, or misaligned
  • Persistent odor: vent/cap not sealing, valve not fully closed, residue on sealing surfaces
  • Weak or no flush: low water level, clogged nozzle, pump losing prime, air leak at cap
  • Valve hard to move: dried residue on slide valve, lack of lubrication, warped seal

Step-by-step troubleshooting (safe and fast)

  1. Empty and rinse the waste tank; clean the sealing rim and mating surfaces.
  2. Inspect seals for cracks, flat spots, or debris; reseat them evenly.
  3. Fill the fresh tank and test the flush; confirm the cap is snug and not cross-threaded.
  4. Check the flush outlet/nozzle for blockage; rinse with warm water.
  5. Lubricate seals lightly with silicone lubricant (rubber-safe), then re-test.

What to check first (most common fixes)

  • Clean and lubricate the main tank seal
  • Confirm the slide valve closes fully
  • Verify caps/vents are sealing
  • Remove buildup around the bowl seal area
  • Avoid harsh cleaners that dry out rubber
Symptom First action Next action
Leak at seam Clean and reseat seal Replace worn seal/gasket
Odor Clean valve and rim Check vent/cap sealing
Weak flush Refill, tighten cap Clear nozzle, inspect pump

Why it matters

A small leak or sticky valve usually gets worse quickly on portable toilets. Cleaning and seal care prevents messes, odor, and premature failure of the valve and pump.

For general DIY tool prep that helps with small repairs and inspections, use [must have tools for appliance repair].

Last updated: March 2026

The average lifespan of a Sears 25973631 Pak-A-Potti IV portable toilet is about 7 to 10 years with normal use and routine seal care. Lifespan is mainly driven by how well the tank seals, flush pump, and valve mechanisms are maintained.

What affects lifespan the most

These factors have the biggest impact:

  • Frequency of use (occasional camping vs. daily use)
  • How often the unit is cleaned and rinsed after emptying
  • Seal lubrication and condition (dry seals crack and leak)
  • Storage conditions (heat and freezing shorten seal life)
  • Chemical use (overly harsh chemicals can degrade rubber)

Typical wear items and what you will notice

Component area Common end-of-life symptom
Tank seals and gaskets Odor or liquid seepage at the joint
Slide valve/flush valve Hard to open/close, drips into bowl
Hand pump/bellows Weak flush, air leaks, inconsistent pumping
Caps and vents Poor sealing, pressure issues, persistent odor

How to extend the life of your portable toilet

  • Empty and rinse the waste tank promptly after trips
  • Clean with mild soap; avoid abrasive pads on sealing surfaces
  • Lightly lubricate seals with a silicone-based lubricant made for rubber
  • Store clean and dry; keep it out of freezing temperatures
  • Do a quick leak check before each trip (fill fresh tank, test flush, inspect seams)

Why it matters

Most “failures” on portable toilets are seal-related. Preventing leaks and keeping valves moving smoothly is the difference between a unit that lasts a few seasons and one that lasts a decade.

For general maintenance and DIY readiness tips, see [are diy appliance repairs safe].

Last updated: March 2026

Most common symptoms to help you fix your freestanding freezers

Choose a symptom to see related freezer repairs.

Main causes: dirty condenser coils, condenser fan failure, dirty bottom front grill, leaky door or lid gasket…

Main causes: lack of power, control system failure, broken compressor start relay, locked up compressor, compressor moto…

Main causes: leaky door or lid gasket, broken defrost heater, bad defrost bi-metal thermostat, defrost control failure, …

Main causes: lack of power, bad compressor, refrigerant leak, bad thermistor, defrost system failure, dirty condenser co…

Main causes: damaged door or lid gasket, cracked cabinet liner, bad defrost bi-metal thermostat, broken defrost heater, …

Main causes: burned out light bulb, bad door or lid switch, faulty LED light board, wiring failure, control system failu…

Main causes: compressor failure, no refrigerant, faulty sensor, control failure, broken defrost heater, bad defrost bi-m…

Main causes: excessive frost, bad defrost heater, bad defrost bi-metal, control system failure, low refrigerant charge, …

Repair guides for upright freezers

How to replace a freezer electronic control board

How to replace a freezer electronic control board

The electronic control board manages the compressor to control freezer temperature. Replace the control board using the…

Repair time and Difficulty

 45 minutes or less
How to replace a freezer thermistor

How to replace a freezer thermistor

When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follo…

Repair time and Difficulty

 45 minutes or less
How to replace a freezer door switch

How to replace a freezer door switch

When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to r…

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your freestanding freezers

Use the advice and tips in these articles and videos to get the most out of your freezer.

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Parts & More

Bottom-Mount Refrigerator
Chainsaw
Front-Engine Lawn Tractor
Gas Water Heater
Microwave
Parts
Receiver
Room Air Conditioner
Side-By-Side Refrigerator