“Oscar the mechanic was awesome too. He arrived when they said he would and worked diligently to locate the problem.”— Jackie Simmons, Google reviewer
Skip to service request
MERCURYOUTBOARDSRequest Service
Miami-Dade • Broward • Palm Beach • Key LargoMobile + Dockside Service
Mercury Outboard Service & Repair Across South Florida
- Mobile + Dockside Service
- Maintenance + Repairs
- 7 Days a Week
Diagnostics, scheduled maintenance and customer-authorized repairs for Mercury outboards across Miami-Dade, Broward, Palm Beach and Key Largo—including no-start, overheating, rough running, alarms, power loss, lower-unit and control concerns.
MERCURYOUTBOARDSEquipment Focus
Mercury outboards, Verado systems, lower units and controls
Marine diagnostics, maintenance and repair, with the service path confirmed from the model, serial number, vessel access and requested work.
Request Service
Request Mercury Outboard Service
Tell us the engine model, engine count and what the engine is doing. Add any alarm or fault code if you have one. We’ll review the request and connect it with the appropriate Sail Onyx technician.
“The technician was super knowledgeable and made sure everything was running perfectly. The communication was spot on too—always keeping me updated.”— Brian Skvarla, Google reviewer
“We ended up fully servicing our engines and Kohler generator with them… Highly recommended!”— Anthony Quartieri, Google reviewer
1 of 3
Need immediate assistance? Call (786) 505-4259.
Mercury Marine Service
A clearer path from engine symptoms to customer-authorized work
Share the engine information—model, serial number and engine count—and what the vessel is doing. Our team will review the system, confirm the correct troubleshooting path and the recommended next step.
Share Model & SymptomsInclude the nameplate, hours, alarms and recent work.
Diagnose the SystemReview the relevant outboard, cooling, fuel, lower-unit, electrical or control concern.
Approve & VerifyConfirm the scope before work and document applicable operating checks afterward.
Mercury Service Scope
Mercury outboard, lower-unit and control service
Choose the concern that best matches the vessel. The final service path is confirmed from the equipment model, symptoms, access and inspection findings.
Mercury SystemsOutboard Engine & Lower-Unit Service
Diagnostics, scheduled maintenance and customer-authorized repairs for Mercury outboards and connected cooling, fuel, ignition, gearcase, electrical and control systems.
Choose a service need
Mercury references identify equipment clients may ask Sail Onyx to service and do not imply manufacturer affiliation, sponsorship, dealer or distributor status, or warranty authorization. Model support and any restricted service requirements are confirmed before booking.
Google Reviews
Trusted by South Florida Boat & Yacht Owners
Google review excerpts describing Sail Onyx engine and mechanical service. These are customer experiences across our wider service offering.
Google Review Excerpt★★★★★
“Oscar the mechanic was awesome too. He arrived when they said he would and worked diligently to locate the problem.”
Google Review Excerpt★★★★★
“The technician was super knowledgeable and made sure everything was running perfectly. The communication was spot on too—always keeping me updated.”
Google Review Excerpt★★★★★
“We ended up fully servicing our engines and Kohler generator with them… Highly recommended!”
Real Sail Onyx Work
Mercury service cases from the field
Real Mercury work and photographs from Sail Onyx. Each repair starts with the actual symptoms and findings on that engine; the scope can vary by model, condition and installation.
A Mercury would idle normally but lose power as throttle was applied. We worked through the fuel-delivery side and pressure-tested the system to isolate the restriction or failing component before making repairs.
Request similar service →
Weak water flow and overheating need to be addressed before additional engine damage develops. On this type of job we inspect the water pump, impeller and cooling passages, remove debris where present and verify cooling-system operation after the repair.
Request similar service →
Milky gear oil, grinding or impact damage can indicate water intrusion or internal gearcase damage. We inspect the lower unit, identify the failed seals or components, complete the approved repair and pressure/vacuum test the gearcase before it goes back into service.
Request similar service →
After an underwater impact, we check more than the propeller. The prop shaft, seals, gearcase and lubricant all need to be inspected for damage or water intrusion before the boat is returned to service.
Request similar service →
Not every Mercury problem starts at the powerhead. Displayed warnings, communication faults, joystick or control issues can involve the helm, network, rigging and engine together, so we diagnose the system as a whole.
Request similar service →
Starting and running complaints can come from several points in the fuel system. Pressure testing and inspection help separate a pump, filter, line, VST or injector problem before parts are replaced.
Request similar service →
Twin, triple and quad installations require a different service plan than a single outboard. We document engine hours and history individually, identify what is due and separate scheduled maintenance from any engine-specific findings.
Request similar service →Our Process
From engine symptoms to a verified next step
A practical service path built around accurate equipment details, customer-authorized work and documented operating checks.
01
Request
Send Engine Details
Share the model, serial number, engine count, hours, symptoms, alarms, recent work and available photos.
02
Review
Inspect & Approve
We diagnose the concern, separate immediate repairs from optional work and confirm the scope before proceeding.
03
Complete
Service & Verify
The assigned team member completes the authorized work and performs applicable operating checks.
Common Questions
Mercury outboard service FAQ
Where do you provide Mercury outboard service?
Sail Onyx serves Miami-Dade, Broward and Palm Beach counties and Key Largo. Mobile or dockside availability depends on vessel location, marina or yard access, equipment type and the work required. Some lower-unit, lifting and major repair work requires suitable dry access or a yard; access and any related charges are confirmed before booking.
What information should I send with my request?
Include the engine model, engine count, serial-number or nameplate photos, engine hours, displayed alarms or fault codes, symptoms and recent maintenance records. Send what you know; identification photos and vessel details are optional. For multiple outboards, identify which engine has the concern.
What Mercury outboard problems can your team assess?
Requests may include no-start, hard starting, overheating, Guardian or power-reduction complaints, rough running, power loss, fuel-pressure concerns, charging, ignition, lower-unit, trim, tilt, steering, SmartCraft/displayed warnings, sensors and control concerns. The correct scope is confirmed after reviewing the equipment and symptoms. A warning code alone does not establish which component needs replacement.
What is included in annual, 100-hour or other scheduled service?
The scope follows the correct model-specific schedule, elapsed time, engine hours and prior records. Applicable fluids, filters, plugs, lubrication, cooling and gearcase items are listed in the estimate. Not every engine needs the same parts at the same interval. The 300-hour service shown in our project gallery describes that particular Verado V8 job, not a universal package.
Can an inspection help compare repair, maintenance and repower options?
Yes. Inspection findings can support a practical next-step discussion. Parts availability, installation compatibility, controls, vessel access and any manufacturer or warranty requirements are confirmed before the scope is approved. Sail Onyx is offering independent service; brand references do not imply Mercury dealership or warranty authorization.