Sailing Zephyr IVvideo

Boat Toilet Not Working? I Replaced the Jabsco Pump at 82!

8 July 2026 · 9 min · 5K views

What this video covers

A Jabsco marine toilet pump on the Westerly Yachts Ltd. Oceanquest 35 Zephyr IV fails to draw in flush water — it expels waste but the inlet stroke stops working, pointing to a failed seal.0:12 Dave, 82 years old, replaces the complete pump assembly rather than a £50 service kit, buying a new unit for £85 from a chandlery.0:25 Before disconnecting anything, he flushes the bowl with fresh water, then closes both the inlet and outlet seacocks.1:41 He removes three pipe connections — one with a jubilee clip, one threaded fitting, and one bolted outlet section where he swaps only the gasket rather than fighting the hose off.2:40 All mounting screws are retained for reuse.3:58 A critical step catches him out: the macerator blade must be twisted and withdrawn before the new pump body will seat on the base.6:41 He transfers the outlet flap valve from the old pump to the new one, reassembles in reverse order, reopens the seacocks, and confirms no leaks.7:35 The complete job requires only a large flathead screwdriver and pliers.1:05 Buying a full replacement pump rather than a service kit simplifies the repair when the fault is uncertain and the price difference is small.

Watch on YouTube

Boats in this video

Westerly Yachts Ltd. Oceanquest 35Their boat

More from Sailing Zephyr IV

Why Cowes Can Be A Sailor’s Nightmare (And How To Fix It)Sept 2026I Took the BLUETTI Elite 100 V2 on a boat – Here's What HappenedAug 2026Day in the Life of a Solo Sailor at 82 : Cowes to PooleJul 2026Ultrasonic Anti-Fouling Test: Will the Seaflo System Deliver?Jun 2026

From Sailing Zephyr IV — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.

Report an issue