Outboard Engine Servicing & Repairs
Keep your outboard motor performing at its best with professional servicing and repairs from Seamark Nunn. Based near Felixstowe in Suffolk, we are one of East Anglia’s largest outboard engine sales and servicing operations, supporting boat owners with everything from routine maintenance to diagnostics and outboard motor repairs.
Our experienced, manufacturer-trained engineers work from our purpose-built workshop, with facilities to service and repair outboard engines across a wide range of makes, models and horsepower. We are authorised dealers and service agents for Honda, Mercury and Suzuki, and can also provide outboard servicing and repairs for Yamaha and Tohatsu engines.
Whether you have a small portable outboard for a tender or fishing boat, or a more powerful engine fitted to a larger vessel, contact our team to arrange your service or repair.
Call 01394 451000 to make a booking or use our Contact Form
Professional Outboard Servicing in Felixstowe
Regular maintenance is one of the most important ways to protect the performance, reliability and durability of your outboard motor.
Marine engines operate in demanding conditions, with exposure to water, salt, changing temperatures and extended periods where the boat may be stored rather than used. Servicing gives critical engine components the opportunity to be inspected, adjusted or replaced before minor wear develops into a more expensive repair.
The maintenance required will depend on the engine, its age, how frequently the vessel is used and the manufacturer's recommended service period. Our engineers can assess your outboard and complete the appropriate work to keep it performing reliably.
As well as our Felixstowe workshop, we can travel locally to customer locations and marinas where required.
Outboard Motor Repairs & Diagnostics
If your outboard engine is difficult to start, losing power, making an unusual noise or simply not performing as it should, our experienced team can investigate the problem.
Modern outboard motors combine mechanical and electronic systems, which means identifying issues isn't always as simple as replacing a single component. Our workshop has access to computer diagnostics from major manufacturers, allowing our engineers to investigate faults in greater detail.
Depending on the problem, an outboard repair could involve the engine itself or associated systems and components such as the gearbox, transmission, propeller, battery, steering or controls.
Servicing Outboard Engines Up to 25HP
If you have a portable outboard motor up to 25HP, you can bring your engine directly to our Felixstowe premises during business hours without making an appointment.
Our engineers will carry out the required servicing or repair work and contact you when your engine is ready for collection.
Smaller outboard engines are commonly used on tenders, inflatables, small fishing boats and other compact vessels. Although these motors may have lower horsepower, routine maintenance is still important for dependable starting, efficiency and performance on the water.
Servicing Larger Outboard Engines
For larger outboard engines of 30HP and above, please contact us in advance to book your engine in.
Larger motors can provide considerably more power and torque and may feature more advanced control systems, power trim, remote control and steering wheel operation. Correct maintenance is particularly important where the outboard forms the primary propulsion system for the vessel.
Our team can work with customers to arrange suitable servicing and repair for larger engines, including engines mounted to RIBs, fishing boats and other larger vessels.
Outboard Engine Brands We Service
Seamark Nunn is an authorised dealer and service agent for three leading brands:
- Honda
- Mercury
- Mariner
- Suzuki
We can also provide servicing and outboard repairs for Yamaha and Tohatsu engines.
Our experience across different brands means we understand the variations between engines, from compact portable motors through to larger, more powerful models.
If you have another make of outboard motor and would like to know whether we can help, contact our team with the brand, model and horsepower.
Choosing the Right Outboard Motor
As well as servicing and repairs, Seamark Nunn supplies a wide range of new engines available to purchase, making us well placed to help if your existing outboard is approaching the end of its useful life or no longer suits your boat.
Choosing the right motor involves more than just looking at horsepower. The size and weight of the boat, hull design, intended use, shaft length and required performance can all influence which engine will suit the vessel.
Features such as electric start, remote control, power trim, battery charging and steering configuration may also influence your decision.
The position and angle of the motor can affect performance, while the correct propeller is important for achieving the appropriate balance between acceleration, speed and efficiency. Matching the right shaft length to the hull is also critical to ensure the propeller and engine are positioned correctly in the water.
Our team can talk you through the advantages and disadvantages of different options and help you explore suitable engines from leading brands. Whether your priority is quiet operation, ease of use, fuel efficiency, reliability or outright power, we can help you find an engine that suits your boat and boating experience.
Petrol & Electric Outboard Motors
The outboard motor market has developed considerably in recent years, giving customers more choice over how they power their boat.
Petrol outboard engines remain a popular choice, with a broad range of horsepower options available to suit everything from compact inflatables to larger vessels. Modern engines from manufacturers such as Honda, Mercury and Suzuki combine dependable, high-quality performance with increasingly sophisticated features and controls.
Electric outboard motors provide another option and are particularly attractive to boat owners looking for quiet operation and ease of use. Seamark Nunn is also an authorised dealer for ePropulsion electric outboards and drives.
The right propulsion system will generally depend on your vessel, how and where you intend to use it, the range you require and your preferred boating experience.
Outboard vs Inboard Engines
Outboard engines are mounted externally, usually at the stern of the boat, combining the engine, gearbox and propeller into a complete propulsion unit. This makes access for servicing and maintenance relatively straightforward and allows the entire motor to be tilted or trimmed.
An inboard engine, by comparison, is installed within the hull and generally transfers power to a propeller through a separate shaft or drive system.
Both inboard and outboard engines have their advantages and disadvantages. Outboards are particularly popular on smaller and medium-sized boats due to their relatively compact design, ease of maintenance and wide range of power options, while inboard systems are frequently found on larger vessels.
Outboard Servicing Across Suffolk & East Anglia
Our workshop is located at Trimley St. Martin near Felixstowe, with convenient access from the A14.
We regularly support boat owners from Felixstowe and surrounding areas, including Ipswich, Woodbridge, Aldeburgh, Harwich, Colchester and other parts of Suffolk and North Essex.
Most servicing and outboard motor repairs are completed at our workshop, but our engineers can also travel locally to marinas and customer locations when required.
If you're unsure whether we can provide servicing at your location, speak to our team and we'll be happy to advise.
Why Choose Seamark Nunn for Outboard Servicing?
Seamark Nunn has been supporting boat owners since 1961, giving us more than 60 years of experience within the marine industry. Over that time, we have developed extensive knowledge of outboard engines, boating equipment, maintenance, repairs and accessories, helping customers keep their boats performing reliably on the water.
Our experienced, manufacturer-trained engineers carry out outboard servicing and repairs from our purpose-built workshop near Felixstowe. We are authorised dealers and service agents for Honda, Mercury and Suzuki, giving our team the knowledge and equipment required to work on engines from some of the industry's leading brands.
Our workshop also has access to manufacturer computer diagnostic systems, allowing us to investigate faults and performance issues accurately before recommending the appropriate repair or maintenance work.
Alongside outboard servicing and repairs, we supply a comprehensive range of new engines, replacement parts, service kits and marine accessories throughout. Whether you need routine maintenance, help diagnosing an engine problem or advice on replacing your existing outboard motor, our team can provide everything you need in one place.
Frequently Asked Questions
How often should I have my outboard motor serviced?
Service intervals vary between manufacturers and engines, so you should follow the maintenance schedule specified for your particular model. Typically, a new outboard engine should be serviced after 20 hours’ use and thereafter every 100 hours or after 12months, whichever comes first. How frequently you use your boat and the conditions it operates in can also influence maintenance requirements.
Do I need to book my outboard in for servicing?
Portable engines up to 25HP can be brought to our Felixstowe premises during business hours without an appointment. For larger engines of 30HP and above, please call us in advance to arrange a booking.
What brands of outboard engines do you service?
We are an authorised dealer and service agent for Honda, Mercury, Mariner and Suzuki. We also offer servicing and repairs for Yamaha and Tohatsu outboard engines.
Can you diagnose faults with my outboard?
Yes. We have access to computer diagnostic systems from major manufacturers, which can help our engineers identify faults and investigate performance problems.
Can you repair my outboard at my marina or my home?
Yes. Most work is completed at our purpose-built workshop, but we can travel locally to marinas and customer locations where required. Contact us with your location and details of your engine so we can advise.
Do you sell new outboard motors?
Yes. We stock a wide range of new outboard motors from leading brands, with different horsepower, shaft length and control options available. Our team can help you choose the right motor to suit your boat and intended use.
Book Your Outboard Engine Service
Whether your outboard needs routine maintenance, diagnostics or a repair, Seamark Nunn can help keep your engine performing reliably for your next boating adventure.
Contact Seamark Nunn to discuss your engine, request a quotation or book larger outboard engines in for servicing.
