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
- 42Technical guides
- 20Repair & service
- 22Sourcing & trade
- FactoryWritten by makers
20 guides
September 24, 2026 · Repair & service · 15 min read
Zodiac Baracuda G3 / G4 / G2 Stops or Crawls: Diaphragm, Foot Pad, Hose Weight — and Which Diaphragm You Have
A Baracuda that quits, crawls or circles has only a handful of possible causes, and they sort themselves in a fixed order. Here is that order, what a worn diaphragm and foot pad look like, how hose length and weight placement change behaviour, and which cassette parts fit which generation.
September 22, 2026 · Repair & service · 13 min read
Jandy Stealth (SHPF / SHPM / PHPF) Pump Rebuild: Shaft Seal, Impeller, Diffuser and the Kit vs Piecemeal Call
A Stealth that drips at the backplate, growls or has lost flow comes apart in a fixed order. Here is that order, the seal-size trap that catches half of first-time rebuilds, and when the impeller-and-diffuser kit beats buying parts one at a time.
September 17, 2026 · Repair & service · 14 min read
Raypak 206A / 266A / 336A / 406A Digital Heater: Diagnostic Order and the Parts That Actually Wear
The Raypak Digital's display codes (PRS, HL1/HL2, SNS, IGN, ROL) point to a side of the heater, not a part. Here is the order to check them in, what the Unitherm governor is doing, and which components are aftermarket work versus OEM-only.
September 15, 2026 · Repair & service · 12 min read
MasterTemp and Max-E-Therm Error Codes: Which Component Each One Points To
PS, HLS, AFS, IGN, AGS, SFS and the E-codes all point somewhere specific. Here is how to read the panel, what to check before touching a part, and which parts are aftermarket work versus OEM-only.
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 · 2 min read
Polaris PB4-60 Rebuild Parts: Volute, Impeller and O-Ring Checklist
Separate the PB4-60 volute and impeller references, check a wet-end bundle, and avoid ordering unrelated parts under a shared kit number.
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.