Your domain registration is pending. Check back in an hour


Is your boat upholstery looking bad? Call us today for a free estimate to have your boat reupholstered. We offer top of the line marine materials that will last years to come.

Need yearly maintenance for your boat? Look no further and give us a call! Our crew specializes in all outboards, YAMAHA, MERCURY, SUZUKI, EVINRUDE.

We installed a new rule 800gph auto bilge pump. You should always have more than 1 bilge pump on your boat.

Does your boat have electrical issues? Contact us today to clean up and rewire your boat! This is a boat we had to rewire plus add 2 fuse boxes. This is the before picture of the mess of wires.

It’s very important to maintain your bilge pumps! Simply test them once a month for peace of mind on the water. If you ever have issues with your bilge pumps have them changed out with new pumps. We recommend Rule bilge pumps. If you need for us to install your new bilge pump just contact us.

When your fuel gauge doesn’t work, it can be many things. A broken cable, the fuel gauge, or even your sending unit. We are replacing a fuel sending unit.


6 months ago
I only write a few reviews a year but this one was absolutely earned. This was my first time using Keys Marine Service for the annual maintenance on my Yamaha 200's...This was a great experience! I reached out to Jayce about 10 days ago and was promptly (within an hour!) replied to and provided with a solid quote for the service. I scheduled the service but due to scheduling conflict at my marina had to re-schedule and Jayce was very accommodating and professional about the issue. On service day he showed up on time, did a thorough checkup of my engines, did the required service, provided pictures of the service and materials used...Wow what a great pleasure to finally find a mechanic in the middle Keys that you could tell takes pride in his work. The price of the service was very competitive and the service provided was outstanding. If you're looking for a reliable, professional and competent marine mechanic in the middle Keys this is your company. Thanks again to Jayce and Keys...
- David N
4 months ago
Needed work done on my Mako. I had a couple boat mechanics I called. One never showed up and the other guy looked like he had. It stopped the party from previous night. A friend recommended I try Keys Marine. That was the best recommendation I could get. Keys Marine was professional and had all the required tools. I highly recommend Keys marine if you have a boat in like Key Largo or Islamorada. Jayce was great to meet and listened to every issue i wanted fixed. Thank you for repairing my Yamaha Outboards and great pricing.
- Miami I
4 months ago
Great place for boat or yacht upholstery. They also do service for 100 hour outboard motor service and lower unit boat engine repair. Very professional reliable and competent.
- Steffen C

Professional Mobile Marine Services

Get On-Site Boat Services & Repair in Upper & Middle Florida Keys

We come to you! Have your boat serviced whether it's on a trailer, a lift, or even on the water.
No need to haul your boat anywhere. Have our team of knowledgeable and professional boat mechanics come right to your door!

We service all the top outboard engine brands like Yamaha, Mercury, Evinrude, Suzuki, Honda, and Kawasaki.

Engine Services (2 stroke & 4 stroke)
Keys Marine Service provides the best on-site boat services throughout the Florida Keys.
  • 100-hour boat service
  • Oil change
  • Spark plugs replacement
  • Fuel/water separator 
  • Fuel filters
  • Oil filters
  • Water pumps
  • Gear oil change, 
  • Engine desalting, 
  • Battery testing/replacement
  • Trim/tilt repair, 
  • Carburetor rebuild, 
  • Throttle body cleaning and much more!

Sign up for our Monthly Maintenance Plan
We offer a monthly boat maintenance plan for your convenience. Our team will come out once a month to check on your vessel. On our monthly on-site boat service visit we will flush out the fuel/water separator, flush out the engine with fresh water, check on fuel quality & oil quality, test batteries, and check on bilge pumps. 
We'll make sure your vessel is up to par and water-ready!

We offer hands-on, full engine diagnostics & compression tests.

Pre-Buy Inspection 
Don't buy a boat without a pre-buy full inspection from bow to stern. Know what you are getting from the experts! We inspect engines, hulls, electronics and much more! 

We offer install of all types of electronics, from GPS, sound systems, led lights, bilge pumps, navigation lights, underwater lights, gauges, pumps, and more.
We also offer control panel upgrades! This includes a fully custom-made panel with a led backlight, the name of your boat, and much more!

We also offer service and repair of jet-skis including all the top brands like Yamaha, Kawasaki, Seadoo, and Honda. This includes 2 stroke and 4 stroke motors.

Trailer Services & Repairs
Get your trailer road-ready! We'll service and repair wheel bearings, bunk, tires/wheel, winch, roller, leaf springs, mudguards, lights, tongue and much more!

Licensed & Insured 

Contact Us


Call now
  • (786) 914-5293

Business Hours

Mon:7:00 AM – 7:00 PM
Tue:7:00 AM – 7:00 PM
Wed:7:00 AM – 7:00 PM
Thu:7:00 AM – 7:00 PM
Fri:7:00 AM – 7:00 PM
Sat:7:00 AM – 5:00 PM
Get quote
Message sent. We'll get back to you soon.