We repair, overhaul and rewind starter motors and alternators for marine engines — from workboats and tugs to yachts, fishing vessels and ship auxiliary systems. Marine electrical units run in a harsh salt-air, high-vibration environment, and we handle the corrosion, bearing wear and winding faults that come with it.
Unlike a general auto electrical shop, our focus is heavy-duty marine and industrial applications. We work on high-output alternators and heavy starters that many workshops turn away, and we test units under load before they leave — so what goes back on the engine actually holds up at sea.
Bring us the unit or the model/part number and we'll advise whether a repair, an overhaul or a replacement makes the most sense.
What we handle
- ▪ Marine engine starter motors (heavy-duty, high-torque)
- ▪ Marine alternators and high-output charging units
- ▪ Common marine engine brands (e.g. Volvo Penta, Cummins, Yanmar, Caterpillar) — confirm your model with us
- ▪ Corroded, water-ingressed or vibration-damaged units
Common signs you need this service
- ✓ Engine cranks slowly or won't turn over reliably
- ✓ Batteries not charging or charging intermittently underway
- ✓ Burning smell, smoke, or discolouration around the starter/alternator
- ✓ Grinding or whining from the starter when cranking
- ✓ Warning light or gauge showing a charging fault
Our process
- STEP 1DiagnoseInspect and bench-test the unit to confirm the actual fault, not just the symptom.
- STEP 2QuoteGive you a clear quote and honest repair-vs-replace advice before any work starts.
- STEP 3Repair / OverhaulRewind, re-bush, replace bearings/brushes/solenoids and clean up corrosion as needed.
- STEP 4TestLoad-test the repaired unit to confirm output and cranking performance.
- STEP 5CollectReturn the tested unit ready to refit, with advice on avoiding a repeat failure.
Get a quote for marine starter & alternator
Send the model/part number over WhatsApp for the fastest response.
Frequently asked questions
Can you repair a marine alternator or is it always a replacement?
Most marine alternators and starters can be repaired or overhauled — rewinding, new bearings, brushes, solenoids or regulators — for less than the cost of a new unit. We'll tell you honestly if a unit is beyond economical repair.
Do you handle high-output and heavy-duty units?
Yes. Heavy-duty marine and industrial starters/alternators are our core work, including high-output charging units that general auto shops often decline.
How long does a marine starter/alternator repair take?
It depends on the fault and parts availability. We'll give you an expected turnaround with your quote — message us the model number for a faster estimate.
What information should I give you for a quote?
The model or part number on the unit's label (even a partial number helps — see our product search), the engine make/model, and a description of the symptom. Photos over WhatsApp speed things up.