Business Details
Trusted Boat Repair and Marine Services in Chester, MD
Kent Island Marine has served the boating community for over 50 years, specializing in marine engine repair, fuel injector service, and trailer maintenance. Our expertise spans outboard motors from Yamaha, Mercury, Suzuki, and other leading brands, with a focus on winterization, spring commissioning, and preventative maintenance. We combine advanced diagnostic technology with traditional work ethic to deliver cost-effective solutions, ensuring reliable performance for recreational and light commercial vessels.Our commitment to quality includes flow-testing fuel injectors to precise specifications and using high-grade replacement parts. Located in Chester, Maryland, we prioritize customer education and transparent pricing, offering flat-rate services and a $100/hour labor rate for personalized repairs. With deep roots in Kent Island's maritime community, we emphasize long-term relationships through honest service and local knowledge.
Services
Fuel Injector Cleaning
Winterization
Trailer Maintenance
Outboard Repair
Spring Commissioning
Battery Services
Propeller Replacement
Mechanical Repairs
Electronics Installation
Brake Upgrades
Highlights and features
- 50+ years of marine industry expertise
- Affordable flat-rate services and transparent pricing
- Advanced fuel injector cleaning technology
- Comprehensive trailer maintenance and upgrades
- Local Kent Island knowledge since 1983
What people say
Expert diagnostics
Affordable rates
Prompt service
Local knowledge
Detailed explanations
Services
Fuel Injector Service
Our fuel injector service restores engine performance using ultrasonic cleaning and flow-matching technology. Each injector undergoes resistance testing, leak-down analysis, and flow calibration to within 3% tolerance. We replace filter baskets and o-rings with premium components, ensuring optimal fuel delivery for Yamaha, Mercury, and Suzuki outboards.
Winterization
Professional winterization protects engines during off-season storage. We perform ethanol-free fuel flushing, fogging, carburetor draining, and anti-corrosive treatments while disconnecting batteries for safety. Services vary by engine size from $110 for 2-cylinder units up to $250 for high-performance V8 models.
Trailer Maintenance
Comprehensive trailer servicing includes brake adjustment, bearing replacement, lighting checks, and structural inspections. Our preventative maintenance packages range from $75 for single-axle trailers to $125 for triple-axle models, with optional stainless steel disc brake upgrades for enhanced durability.
Outboard Repair
We diagnose and repair all major outboard brands with services including carburetor rebuilding, fuel system maintenance, and ignition system troubleshooting. Our $100/hour rate covers cooling system work, valve adjustments, and complete engine tune-ups with computerized diagnostics available for modern models.
Spring Commissioning
Spring commissioning ensures boats are ready for the season with battery charging, system checks, and engine performance testing. Basic service at $150 includes fluid checks and safety equipment verification, with additional $75 charges for multi-engine setups and specialized systems.
Questions
What outboard brands do you service?
We service Yamaha, Mercury, Suzuki, Honda, and older Johnson/Evinrude models, including specialized HPDI and Optimax fuel injection systems.
Do you offer mail-in fuel injector service?
Yes, we provide mail-in fuel injector cleaning with included return shipping. Injectors typically processed within 48 hours using USPS Priority Mail.
Are trailer brake upgrades available?
We offer Dexter G5 and Kodiak stainless steel disc brake conversions for improved stopping power and longevity in marine environments.
What winterization packages include?
Our winterization includes fuel system protection, corrosion prevention, battery disconnection, and mechanical lubrication tailored to engine specifications.
How to schedule service appointments?
Contact us directly at (410) 643-6500 to schedule by-appointment-only services for engine work, trailer maintenance, or seasonal preparations.
Reviews (4)
Ron Blackmon
Oct 30, 2017
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I contacted John to do some work on my new used boat. From the moment I walked into the office, the experience was top notch. John walked me through every step and even went above and beyond to make sure I knew how everything worked and how I can maintain the boat for many years to come. I even received a follow up call from John to see how the boat was operating. If you need some work done on your boat or trailer I highly recommend Kent Island Marine.
Jimmy Carminati
Aug 18, 2016
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Our experience at Kent Island Marine was excellent. We have an aging boat that required expert attention. While I live 7 hours away, I could tell through the whole process that our boat was in great hands with John. We were always updated with progress made, and informed of options. John was crystal clear and honest about what needed to be done and why. Kent Island Marine went above and beyond expectations and I would highly recommend them.
Jean Leathery
Jul 09, 2016
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My husband & I have used Kent Island Marine for over ten years. In fact, I believe we were among their first customers. Since that time, we never have went anywhere else. They have serviced our inflatable, runabout, and cruiser. They are always thorough, responsive, and proactive in keeping our boats in top condition. We highly recommend Kent Island Marine!!
Brandon
Jun 16, 2016
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The best money I've spent on a boat. Kent Island Marine saved me thousands on what would have been a regrettable purchase. I am in the market for a used boat and having found a nice one--on the surface--I brought it to John at KI Marine to give me an unbiased assessment of the mechanical condition and running gear. I knew it ran as I sea-trialed it earlier in the day with the owner.
John called me the same day we dropped it off, gave me very specific details about the motor, shaft, steering, trailer, and found some serious items that needed immediate attention and would have cost me thousands
John called me the same day we dropped it off, gave me very specific details about the motor, shaft, steering, trailer, and found some serious items that needed immediate attention and would have cost me thousands
