Expert Hands on Every Engine
Mercury certified mechanics with 15+ years experience keeping Sydney boats on the water.
Call for a QuoteExpert Marine Mechanics Servicing All Makes & Models from Hornsby
Your boat is only as reliable as the workshop that maintains it. At Marine Garage, our Hornsby-based team of qualified marine mechanics provides comprehensive repair and servicing solutions for recreational vessels of all sizes, types and engine configurations. Whether you own a 4-metre tinny with a small outboard or a 10-metre cruiser with twin sterndrives, we have the skills, tools and experience to keep your boat running safely and efficiently on Sydney's waterways.
Regular servicing is the single most important thing you can do to protect your investment and ensure safe boating. Marine engines operate in one of the harshest environments imaginable, exposed to saltwater, humidity, UV radiation and the constant vibration of being on the water. Without proper maintenance, components corrode, lubricants break down, fuel systems deteriorate and small problems become expensive failures. Our scheduled servicing programs are designed to catch issues early, replace wear items on time and keep your engine performing at its best season after season.
We service all major outboard brands including Mercury, Yamaha, Suzuki, Honda, Evinrude and Tohatsu. For sterndrive and inboard engines, we work across MerCruiser, Volvo Penta, Yanmar and other popular manufacturers. As a Mercury specialist workshop, we carry a comprehensive range of genuine Mercury and MerCruiser parts and have deep expertise in the full Mercury product range from portable four-strokes through to high-performance V8 Verado outboards. If Mercury powers your boat, you are in the right hands at Marine Garage.
Beyond routine servicing, our workshop handles the full spectrum of marine mechanical repairs. Engine rebuilds and overhauls are a regular part of our workload, whether that involves replacing pistons, bearings and gaskets on a tired four-stroke or rebuilding the powerhead on a two-stroke outboard. We carry out lower unit repairs including gear replacement, seal kits, water pump impeller changes and bearing replacements. For sterndrive owners, we service and repair MerCruiser Alpha and Bravo drives, Volvo Penta legs and other popular systems.
Fuel system problems are among the most common issues we see in our workshop. Ethanol-blended fuels can wreak havoc on older fuel lines, carburettor diaphragms and fuel tank linings. We diagnose and repair fuel delivery problems including carburettor rebuilds, fuel injector cleaning and replacement, fuel pump testing, tank inspection and complete fuel system overhauls. If your engine is running rough, losing power, consuming excessive fuel or refusing to start, our diagnostic process will identify the root cause quickly and accurately.
Marine electrical systems present their own unique challenges. Saltwater corrosion, vibration and moisture can cause intermittent faults that are difficult to trace without proper diagnostic equipment and experience. Our electricians troubleshoot and repair everything from battery charging systems and starter motors to navigation light circuits, bilge pump wiring, switch panels and complex engine management systems. We also carry out complete rewiring projects for vessels that have outdated or deteriorated wiring, using marine-grade tinned copper cable and waterproof connections throughout.
Structural integrity is critical for safety on the water. Our workshop handles fibreglass hull repairs, transom reinforcement, stringer replacement, deck repairs and aluminium welding. If your boat has suffered impact damage, stress cracking, delamination or corrosion, we can assess the extent of the damage and carry out professional repairs that restore the vessel to full structural soundness. We use quality marine-grade materials and proven repair techniques that stand up to the harsh marine environment.
For boat owners who want complete peace of mind, we offer annual maintenance programs tailored to your vessel and usage patterns. A typical annual service includes engine oil and filter change, gear oil replacement, spark plug inspection or replacement, water pump impeller service, fuel filter replacement, battery testing, anode inspection, safety equipment check and a thorough visual inspection of the hull, fittings and trailer. We keep detailed service records for every vessel so you can track maintenance history and plan ahead for upcoming requirements.
Our workshop at 3/32 Leighton Place, Hornsby is fully equipped with hydraulic boat handling equipment, engine diagnostic tools, compression testers, multimeters and a comprehensive inventory of common parts and consumables. Most standard services can be completed within one to two days, and we always communicate clearly about timelines and costs before any work begins. We understand that time off the water is time wasted, so we work efficiently to get your boat back to you as quickly as possible without cutting corners on quality. That commitment to honest, reliable service is why boat owners across Sydney, from the Northern Beaches to Sutherland Shire, trust Marine Garage with their vessels.
Full engine services including oil changes, filter replacements, impeller service, spark plugs, gear oil and compression testing.
Complete powerhead rebuilds, lower unit overhauls, sterndrive repairs and engine repowering for all major brands.
Fault finding, rewiring, battery systems, charging circuits, starter motors, switch panels and engine management diagnostics.
Carburettor rebuilds, injector cleaning, fuel pump replacement, tank inspection and complete fuel system overhauls.
Fibreglass hull repairs, transom reinforcement, stringer replacement, deck repairs and aluminium welding.
Comprehensive annual service programs tailored to your vessel, with detailed records and scheduled reminders.
Quality new and pre-owned vessels with full inspection and preparation.
Complete hull-to-helm vessel rebuilds and custom modifications.
Chartplotters, sonar, radar, stereos and LED lighting installation.
Cut and polish, ceramic coating, vinyl wrap and paint correction.
Professional antifoul application and seasonal commissioning services.
Expert structural repairs, fibreglass work and timber restoration.
Secure hardstand storage and maintenance facility in Hornsby.
Premium marine-grade EVA foam and soft flooring installations.
