Spare parts for Dolphin Master M4

Dolphin Master M4 Replacement Parts: Complete Parts List with Prices

The Master M4 is one of the few Dolphin s with a power supply that includes a built-in weekly timer: you can program the robot to start automatically every day, every other day, or every three days, without having to plug it in manually. It’s a robot designed for pools up to 12–15 m long, featuring double insulation and thermal protection in the transformer, an anti-twist swivel cable, and a transport cart included as standard. This high-end equipment is evident in the parts list: standard robot components (crawler, brushes, roller) are paired with the power supply featuring the timer and the transport accessories. All items include pricing and a link to the product page.

Related categories: Dolphin Pool Cleaner Replacement Parts · Dolphin Pool Cleaners · Robot Pool Cleaner Replacement Parts · Technical Support

Filtration: spring-loaded cartridge, ultra-fine cartridge, or replacement cover

The Master M4 uses “medium” cartridges, a size that falls between entry-level models and high-end models with a cart.

Drive system: track, brushes, and roller

Motor and accessories: propeller, cable, and float

Power supply with timer, transformer, and basic power supply

The power supply with a weekly timer is the hallmark of the Master M4: it allows you to schedule automatic cleaning without manual intervention. It is also the most expensive part in the breakdown.

Wiring: swivel, non-swivel, and sections

Transport: cart and cover

Quick Diagnosis: From Symptom to Part

Before buying the fountain with a timer (€219)

The power supply with a weekly timer is the most expensive component in the Master M4 breakdown. Before you decide:

• First, check the power supply cable (€19.95) and the power plug (€22.95): these are more likely to fail and are much cheaper.
• If the robot starts up fine when turned on manually but the timer doesn’t schedule automatic cleaning, this is a more specific indication of a problem with the power supply’s electronic module, and usually confirms that it needs to be replaced.
• Check the wall outlet and the circuit breaker: sometimes the problem isn’t with the robot or the fountain.

Is it worth repairing or buying a new one?

If the repair cost exceeds 60–70% of the price of a new Master M4, consider replacing the entire unit. The timer-equipped power base (€219), the lower filter cover (€92.75), and the swivel cable (€219) are the most expensive parts; if your robot needs several of these at once, compare the cost to the current price of the model. For isolated issues with the track, brush, or cable, repairing is still the most cost-effective option.

Maintenance That Prevents Almost All Breakdowns

• Empty and rinse the cartridges after every 2.5-hour cycle; a clogged filter puts a strain on the motor.
• Check the 18-meter cord regularly, especially if it’s the non-swivel version.
• Clean the impeller of tangled hair or string after each extended use.
• Store the Master M4 on its cart and in its cover when not in use; sunlight degrades the track and the cord.

Need help with your Dolphin Master M4?

Proper maintenance ensures optimal performance. Replace any worn-out parts to extend the lifespan of your Dolphin Master M4 pool cleaner: with its timer-controlled fountain, cart, and swivel cable, this robot features more high-end equipment than a standard Dolphin, so be sure to identify exactly which part you need before purchasing. If you have any questions, call us at 91 128 55 90, contact us via the contact form, or consult our technical support. Shipping to mainland Spain within 24–48 hours; free shipping on orders of €150 or more.