Yamaha Outboard Repair & Service
A mobile Yamaha outboard mechanic for F-series four strokes, SHO, and the big 300s and 350s, at your dock or marina.
Ethan, the owner and mechanic, answers the phone · Open 7 days a week
- Single to quad engine setups
- At your dock or marina
Yamaha Outboard Repair at Your Dock
Yamaha is the most common outboard we work on, from small 9.9s to triple and quad 300s and 350s. We come to your dock, marina, or boat lift anywhere from Boca Raton to Islamorada, find the problem, and fix it where the boat sits.
Trusted by boat owners across South Florida
Read our Google reviewsNo call center. No front desk.
When You Call, the Owner Picks Up
Every call goes straight to Ethan, the owner of EG Marine Services and the mechanic who does the work. There’s no receptionist taking a message and no waiting on a callback from someone who’s never seen your boat.
Tell him what’s going on: the alarm on the display, the noise at idle, the engine that won’t turn over. Ethan knows Yamaha, Suzuki, Mercury, and the rest of what runs in South Florida inside and out, so you’ll usually get a straight answer on the first call, whether that’s something you can check yourself or a visit to your dock.
- Straight answers, not a script
- Diagnostic questions answered on the phone
- Honest advice, even when the fix is simple
- The person you talk to is the one who shows up
Ethan
Marine mechanic
Describe what the boat is doing and get a real answer from the mechanic, not a message taker.
Call Ethan: 786-351-5363Open 7 days a week
Yamaha outboard acting up or due for service? Call Ethan with the model and hours.
Call 786-351-5363Common Yamaha Outboard Problems We Fix
Running rough or losing power
Clogged fuel injectors, restricted fuel lines, and dirty VST filters are the usual causes. We clean or replace injectors and service the whole fuel system.
Trim problems
Bad trim solenoids, trim motors, and trim pumps, plus trim unit reseals on Yamaha 115s through 350s.
No-starts
Bad start solenoids, battery cables, ground connections, and sensors.
Lower units
Locked-up or leaking lower units, prop seals, and gear lube service.
Low compression
A compression test tells us whether a running problem is mechanical. We test before recommending any major repair.
Yamaha Outboard Services We Provide
- Yamaha 100 hour service, 300 hour service, and 1000 hour service with timing belt
- Yamaha computer diagnostics and fault codes
- Fuel system repair, injector cleaning, and VST service
- Trim and tilt repair
- Lower unit repair
- Water pump impeller replacement
- Rigging, controls, and cables
- Yamaha repowers
Real Yamaha Jobs
Triple Yamaha 300s
A 300 hour service on triple Yamaha 300s, plus new trim tab relays, batteries, and VST filters.
Yamaha 150 running rough
Weak flow on the fuel injectors. Cleaning the injectors and servicing the fuel system brought it back.
Twin Yamaha 350 trim
Both trim units resealed and both trim motors replaced.
Yamaha 300 top end service
A full top end service, including the timing belt and tensioner, plus a new steering helm.
Yamaha Engines We Work On
- Yamaha F-series four strokes, F25 through F300
- Yamaha SHO models
- Yamaha V8 XTO and F350
- Older Yamaha two strokes and HPDI
From the Job Log
Yamaha outboard top end service at a dock 
Yamaha outboard diagnostics on a laptop 
Yamaha outboard timing belt replaced at 1000 hours
Get Your Yamaha Outboard Serviced
Call with the engine model, hours, and what it’s doing, or what service is due.
Call Ethan directly786-351-5363Open 7 days a week · No call center or front desk, you talk to the person doing the work
- Yamaha diagnostics and fault codes
- Fuel injector and VST service
- Trim, lower unit, and steering repair
- 100, 300, and 1000 hour service
Prefer a free quote?
Leave your number and we’ll call you back.
Yamaha Outboard Repair & Service FAQs
My Yamaha outboard won’t start. Can you fix it at the dock?
Usually, yes. Most Yamaha no-starts come down to fuel, ignition, or the starting circuit. Ethan reads the fault codes with Yamaha diagnostics and fixes it at your dock.
Do you have to use a Yamaha dealer for service?
No. Routine maintenance can be done by any qualified mechanic as long as it follows Yamaha’s schedule and specs and the work is documented. We keep records of every service.
How often does a Yamaha outboard need service?
Yamaha calls for service once a year or every 100 hours, whichever comes first. We’ve pulled a burnt impeller from a 2019 Yamaha that had only 150 hours on it in six years, because the owner thought low hours meant no service.
What happens if I skip the 100 hour service on my Yamaha?
The parts that wear from time, not hours, keep wearing: the water pump impeller, the anodes, the gear lube, and the fuel filters. Skipping service is how small, cheap fixes turn into overheating, a damaged lower unit, or a no-start.
Can you read Yamaha fault codes and engine hours?
Yes. We connect Yamaha diagnostic software to read fault codes, engine hours, and live data, which also helps on a pre-purchase inspection.
How much does Yamaha outboard repair cost?
It depends on the engine and what failed. We diagnose first and give you a quote before any repair starts.
Areas We Serve
Our mobile marine mechanics travel to marinas, private docks, and waterfront homes from Boca Raton to Islamorada. Nearby but not listed? Reach out to confirm availability in your area.