Marine Engineering

Marine Engineering

KJ Engineering Worthing, West Sussex. Marine Engineering, Inboard repair

Outboard & Inboard Engine Regular Maintenance Services

The maintenance of your outboard engine will keep it running at high performance with power and fuel efficiency while providing a smooth and trouble free operation.


Outboard engines general periodic maintenance not only prevents repairs and makes the motor reliable, it also assures performance, including fuel efficiency and the longevity of the motor.

Maintenance is typically done every season, or at the recommended number of hours of operation. Right before the summer is a usual time, or approximately every 60 hours, depending on the type of boat and its usage.


As simple as it sounds, outboard engines need the proper oil, and it is an opportunity to see if there are any other symptoms of mechanic problems that would be present or may come in the future.


The maintenance of the lower unit includes checking the oil, seals, as well as checking if the gears are working properly, and smoothly. This is also a diagnostic opportunity to avoid any potential gear failures in the future.


They are necessary to keep your outboard engine running smooth and performing at its top possible efficiency and power. As with all maintenance, tune ups also serve as diagnostic opportunities. We also know what parts to use for each engine and boat usage.


One of the best practices is to drain and clean the fuel lines and pump to be sure that the gas will run smoothly and that there are no dirt, oil or water in the lines that may clog the carburetor or damage the engine.


Water pump service is mandatory for a boat that hasn’t been used for some time. It is necessary to guarantee that the water system works perfectly in order to cool your engine, otherwise the engine would suffer serious damage.

In general, water pumps fail often when a boat has been sitting up which makes parts easy to crack. Water pumps also fail when running without water, a mistake that some people unfamiliar with outboard engines make.

When the water pump is damaged the solution is to replace it.

Outboard & Inboard Engine Repair Services


Diagnostics is similar to all boats, including electrical systems, fuel systems, engine mechanics, and spun bearing. Usually the most challenging is the electrical system, it has become complex because of sophisticated computer control and sensors.

Typical outboard symptoms that require diagnostics and repair:

  • Running rough
  • Hard to start
  • Idling rough
  • Strange noises
  • Spark plugs
  • Carburetor leaking
  • Sluggish, no power


We have Experience rebuilding models, including Yamaha, Suzuki, Mercury,  Honda, Johnson, Force and more.


Lower unit repairs involve testing the gears, checking oil levels, and checking if the lower unit seals are leaking water into the oil.

Usually the seals are bad, resulting in an easy repair. However, many times the gears are stripped and they need to be replaced.

Inboard Outboard repair engineer mechanic Worthing, west sussex