Zodiac MX8 Pool Cleaner Parts Breakdown: What Fails and How to Swap It

If your MX8 has started slipping, missing spots, or stalling, odds are one or two inexpensive components have worn out. Swapping those parts yourself is usually quicker — and far cheaper — than buying a new cleaner. Below you’ll find the most-requested Zodiac MX8 replacement parts, what each one does, the tell-tale signs it’s time to replace it, and quick links to the exact OEM part.

Quick Part-Finder Table

Spotlight on the Top MX8 Parts

1. High-Traction Tracks (R0526100)

These rubber tracks keep the cleaner glued to pool walls. Cracks or missing teeth let the body slip, creating that annoying “half-pipe” pattern on your floor.

2. Direction Control Devices A & B (R0524700 / R0524800)

The twin gearboxes decide whether the MX8 turns left or right. If your cleaner pirouettes in the deep end, one of these is likely jammed. They swap out with a single Phillips screwdriver.

3. Complete Engine Assembly (R0524900)

The turbine blades in this “mini jet engine” turn suction into forward motion. Pebbles and sand eat away at the fins over time, cutting performance. A fresh engine restores full power in minutes.

4. Drive Shaft Assembly (R0525100)

Links the engine to each track. When it fractures, you’ll hear a clicking sound followed by one dead track. Always inspect the splines for rounding when you’re inside the cleaner.

5. Hose Float (R0526800)

Positioned roughly 9 inches (23 cm) from the cleaner head, this bright-blue float prevents the hose from dragging the unit off balance. If the plastic has filled with water, swap it before attempting bigger repairs.

6. Cyclonic Scrubbing Turbine Kit (R0714300)

This upgrade bolts in where the plain turbines sit, adding rotating brushes that scour fine dust and algae off smooth surfaces—ideal for tile or fiberglass pools.

7. Flow Regulator Valve (FRV100)

The FRV100 caps flow at the ideal level so the MX8 doesn’t starve your pump or stall on high-RPM cycles. A two-minute inline swap that often fixes sporadic slowdowns.

DIY Tips for a Faster Install

• Lay a white towel under the cleaner while you work; small screws won’t roll away.
• Rinse every new part to remove factory dust before re-assembly.
• Hand-tighten screws first, then give a gentle quarter-turn with the driver—plastic threads strip easily.
• After any repair, run the MX8 on the pool floor for five minutes and watch for smooth, alternating turns.

MX8 Pool Cleaner FAQs

How often should I replace MX8 tracks?

In a balanced pool, tracks last 12–18 months. Inspect them every quarter and replace once cracks or missing teeth appear.

How can I tell if a Direction Control Device has failed?

Lift the cleaner out, flip it over, and gently spin each track by hand. If one side feels rough or locks up, the corresponding Direction Control Device (Side A or B) needs replacement.

Why does my MX8 stall or move slowly?

Common culprits are a worn engine assembly, clogged drive shaft, or excess suction. Install the FRV100 Flow Regulator Valve to keep flow at the sweet spot.

Are MX6 parts interchangeable with MX8 parts?

Only the hose float, track, and FRV100 valve fit both cleaners. Engines, gearboxes, and drive shafts are model-specific.

Where should I position the hose float?

Place it about 9 inches (23 cm) from the cleaner head. This stops the hose from dragging the cleaner nose-down.

Do I need any special tools for these repairs?

Just a #2 Phillips screwdriver, needle-nose pliers, and a soft brush. A small dish or magnetic tray keeps screws from disappearing.

Browse our full selection of pool cleaner parts or shop the entire Zodiac line for more upgrades.

Ready to Get Your Pool Cleaner Moving Again?

Click any of the links above to order genuine parts from Aqua Pool Supply and enjoy a spotless pool all season long!