Marine Diesel Servicing and Repairs in Mackay

Keeping an inboard diesel engine performing to specification requires precise diagnostics and scheduled upkeep. Based at Mackay Marina, Smooth Torque Marine provides inboard diesel servicing and mechanical repairs across Mackay, Airlie Beach, and the Whitsundays. 

As the region’s authorised MAN Marine distributor, our marine diesel mechanic in Mackay team handles everything from routine maintenance to complex fault assessments, helping skippers and fleet owners minimise downtime and protect engine longevity.

Key takeaways

• Inboard diesel service: We provide scheduled vessel servicing, fault assessment and complex repairs.
• MAN Marine: We’re the authorised regional distributor, with parts, service and warranty support for i6, V8 and V12 platforms.
• Local workshop and coverage: Our workshop is at Mackay Marina, and we support vessels across Mackay, Airlie Beach and the Whitsundays.

Inboard marine diesel servicing and repair in Mackay

Our inboard engine maintenance covers scheduled vessel servicing and repair assessment, from routine work to more complex engine repairs. The scope depends on the engine and work required. See our Marine Diesel Servicing & Repairs page for details about our service.

When an engine develops a fault, tell us when it started and what you have noticed—such as an alarm, a change in temperature, smoke, unusual noise, vibration or loss of power. These details help with vessel fault diagnosis. For an active alarm or serious symptom, follow the engine manufacturer’s instructions and contact us for advice before operating the engine further.

If the issue involves onboard electrical systems, we also provide marine electrical diagnostics and installations. Read our guide to marine electrical systems in Mackay or view our marine electrical service.

If the issue involves onboard electrical systems, our guide to marine electrical systems in Mackay explains the support we provide.

Marine diesel engines we service: MAN, Yanmar, Volvo Penta and more

We service the engine platforms listed below in-shop or on-site. The table reflects the published model and power ranges; share your engine’s exact model and serial number so we can advise on the work required.

Engine platform	Published models and power range	Service support
MAN Marine	i6, V8, V12 · 350–1,900 HP	Authorised distributor for the Mackay region; parts, service and warranty support
Yanmar	4LV, 6LY, 8LV · 40–800 HP	In-shop or on-site servicing
Volvo Penta	D3, D4, D6, D8, D11, D13 · 110–900 HP	In-shop or on-site servicing
Cummins	QSB, QSC, QSL, QSM · 230–750 HP	In-shop or on-site servicing
Caterpillar	C7, C9, C12, C18, C32 · 375–2,000 HP	In-shop or on-site servicing

Our diesel service is led by Glenn Moore, who holds Master Level 5 and MED 1 certifications. We follow manufacturer service intervals to help keep your engine within warranty requirements. Learn more about how we work at Smooth Torque Marine.

Booking a boat mechanic in Mackay: what information to send

A few engine and vessel details help us direct your enquiry to the right person. Where available, include:

• engine make, model and serial number;
• vessel make, model and current location;
• engine hours and approximate date of the last service; and
• a short description of the maintenance or repair needed, including when any symptoms began.

For a fuller booking checklist, see our guide to booking a boat mechanic in Mackay. If you’re not sure whether the job is a service or repair, describe what you’ve noticed and we’ll advise on the next step. We may need to inspect the engine before confirming the required work.

For a fuller checklist of details to send us, see our guide to booking a boat mechanic in Mackay.

Workshop location and marine service areas

When you enquire, share the vessel’s current location, preferred timing and the service or repair required. We’ll discuss whether to bring the vessel to our Mackay Marina workshop or arrange another suitable next step.

Frequently asked questions

Arrange marine diesel servicing or repairs in Mackay

Need help with an inboard diesel engine? Email our Engine & Diesel team or send us an enquiry. We’re open Monday to Friday, 8:00 am to 5:00 pm.