Guides & cross-reference notes
How these parts actually fail, and what replaces them.
Fitment guides, cross-reference charts and repair notes for Hayward, Pentair, Jandy, Sta-Rite and Zodiac equipment — written by the people who mould the parts, not by a copywriter.
- 01 · Worn lid O-ringCause: Dry run · Result: Leak
- 02 · Cracked lidCause: Over-tightening · Result: Cracks / leaks
- 03 · Impeller wearCause: Cavitation · Result: Low flow
- 32Technical guides
- 16Repair & service
- 16Sourcing & trade
- FactoryWritten by makers
16 guides
August 9, 2026 · Repair & service · 6 min read
Pentair FNS Plus DE Filter Service: Clamp, Air Bleed and the Replace-or-Repair Call
How to inspect and safely reassemble the FNS Plus tension control clamp, keep the internal air bleed clear, and recognize when a complete replacement filter beats another round of parts.
August 8, 2026 · Repair & service · 6 min read
Jandy Pump Lid Replacement and the Quick-Service Parts Every Truck Should Stock
A working guide to Jandy quick-service parts: how to replace a pump lid and o-ring, when to swap baskets and diffusers, and why the filter's air release and gauge kit belongs on every service truck.
August 8, 2026 · Repair & service · 6 min read
Polaris PB4-60 Booster Pump Rebuild: Impeller and O-Ring Replacement
Diagnosing volute leaks and worn impellers on the Polaris PB4-60 booster pump, with a full wet-end rebuild walkthrough using an impeller and O-ring kit.
August 7, 2026 · Repair & service · 6 min read
Salt Cell Bypass Cells Explained: Winterizing and Servicing Without Downtime
What a dummy cell is, how it keeps a salt pool running during winterizing or cell service, and why it beats a hard-plumbed bypass on most equipment pads.
August 7, 2026 · Repair & service · 6 min read
Hayward Star-Clear Plus Maintenance: Knobs, Air Relief and Cartridge Care
The three failure points techs actually see on Star-Clear Plus filters — cracked locking knobs, clogged air relief tubes, and tired cartridges — and how to service each one.
August 6, 2026 · Repair & service · 6 min read
Hayward Perflex DE Filter: How the Bump Mechanism Works and How to Rebuild It
Why Perflex DE filters regenerate without backwashing, how the diaphragm gasket and bump shaft wear out, and how to rebuild the bump assembly with aftermarket kits.
August 6, 2026 · Repair & service · 6 min read
Multiport Valve Troubleshooting: Spider Gaskets, Diverters and Backwash-Line Leaks
Water down the backwash line, leaks between positions, a handle that fights back — the three classic multiport valve failures, and whether a spider gasket kit or a diverter kit fixes each.
August 5, 2026 · Repair & service · 5 min read
Jandy Valve Rebuild Kit Guide: Renewing 2-Port and 3-Port Diverter Valves
Stiff handles, spa water bleeding into the pool, weeping covers — worn diverter internals cause all three. What a Jandy valve rebuild kit includes and how to install it step by step.
August 5, 2026 · Repair & service · 6 min read
Jandy Check Valve Replacement: Fix a Failed Flapper Without Cutting Pipe
Spa draining down overnight or a flooded pad after shutdown usually means a worn check valve flapper. How Jandy swing check valves fail and how to replace the cover and flapper in place.
August 4, 2026 · Repair & service · 6 min read
Pentair SuperFlo Wet-End Rebuild: Parts Set, Seal Refresh and Reassembly Order
When a SuperFlo leaks or loses prime, the motor is usually fine — the wet end is worn. What a rebuild parts set covers, what to inspect, and the reassembly order that prevents callbacks.
August 4, 2026 · Repair & service · 6 min read
Pentair WhisperFlo Impeller Replacement: Symptoms, Teardown and Swap Procedure
Low flow with a low filter gauge usually means impeller trouble. Here is how to confirm it, open a WhisperFlo safely, and swap the impeller without breaking the clamp ring.
August 3, 2026 · Repair & service · 5 min read
Hayward TriStar Pump Rebuild: What's in a Wet-End Bundle and How to Use It
A practical TriStar rebuild guide: what the two wet-end bundles cover, a pre-order inspection checklist, and the assembly habits that keep a rebuilt pump sealed.