• Home
  • About Us
  • Our Services
  • Contact Us
  • PRIVACY POLICY
  • Schedule Service Now
  • More
    • Home
    • About Us
    • Our Services
    • Contact Us
    • PRIVACY POLICY
    • Schedule Service Now
  • Home
  • About Us
  • Our Services
  • Contact Us
  • PRIVACY POLICY
  • Schedule Service Now

Factory-Grade Yamaha Outboard Care

 Comprehensive mobile maintenance and forensic diagnostic services. Genuine OEM parts, exact factory specifications, delivered dockside across Palm Beach County. 

Yamaha 100-Hour Maintenance

 

Factory-grade 100-hour preventative maintenance loop engineered to preserve long-term powerhead reliability and uphold factory warranty compliance. We bring dealership-level tools and mechanical precision straight to your private driveway or dry-stack marina.


Service Includes


  • Full engine oil and primary oil filter refresh
  • Lower unit gearcase lube drain and replacement
  • Pressure-testing of gearcase seals
  • Replacement of lower unit drain plug washers
  • Extraction and inspection of all spark plugs for gapping and carbon analysis
  • Under-cowl primary fuel filter element replacement
  • External 10-micron fuel-water separator filter replacement
  • Complete inspection of powerhead sacrificial zinc anodes
  • Precision marine grease treatment across all mid-section steering, tilt, and trim pivot points


Billed rate covers expert mobile on-site mechanical labor. Genuine Yamaha OEM maintenance parts, Yamalube marine lubricants, and a $20 hazardous waste environmental disposal fee are itemized separately on the final invoice. Requires a 50% upfront deposit to secure your mobile route slot.

Yamaha 100-hour outboard service and maintenance badge
VIEW 100-HOUR SERVICE

Yamaha 300-Hour Comprehensive Service

 

A deep-teardown mechanical overhaul going far beyond standard fluid changes. This factory-recommended milestone service maximizes cooling efficiency and sub-system structural reliability in South Florida's punishing, high-salinity marine environments.


Service Includes

  • Complete 100-hour engine oil, oil filter, and gear lube refresh
  • Full raw-water pump housing rebuild (impeller, wear plate, insert cup, and water pump seals)
  • Removal and replacement of internal engine block sacrificial anodes
  • Cylinder head thermostats replacement to prevent catastrophic scale buildup
  • High-pressure under-cowl fuel filter element replacement
  • External 10-micron separator replacement
  • Complete removal and replacement with brand-new factory spark plugs
  • Comprehensive visual inspection of the engine serpentine/drive belt


Yamaha Diagnostic System (YDS) Computer Health Sweep — Recommended add-on service (additional cost)


Billed rate covers premium mobile on-site mechanical labor. Genuine Yamaha OEM 300-hour mechanical parts kits, specialized marine lubricants, and a $20 hazardous waste environmental disposal fee are itemized separately on the final invoice. Requires a 50% upfront deposit to secure your mobile route slot.

Yamaha 300-hour outboard service and maintenance badge
VIEW 300-HOUR SERVICE
À La Carte Diagnostic Offerings

Standalone Diagnostic Services

Premium Borescope Cylinder & Valve Examination

Yamaha Diagnostic System (YDIS) Computer Health Sweep

Yamaha Diagnostic System (YDIS) Computer Health Sweep

Borescope inspection for Yamaha outboard engine diagnostics

 

Forensic internal engine visualization for serious boat captains. Don't guess what the interior of your powerhead looks like—see it in high-definition video without removing the cylinder heads. Highly recommended for pre-purchase vessel inspections or diagnosing unexpected power drop-offs.


Service Includes

  • Complete removal of the engine cowl and spark plug array
  • Insertion of articulation-head digital endoscopic lens into every cylinder chamber
  • Thorough visual scanning for cross-hatch cylinder wall wear
  • Piston crown pitting and wet combustion (fluid intrusion) analysis
  • Valve face carbon scaling inspection
  • Full digital image/video log provided once analyzed

SCHEDULE THIS NOW

Yamaha Diagnostic System (YDIS) Computer Health Sweep

Yamaha Diagnostic System (YDIS) Computer Health Sweep

Yamaha Diagnostic System (YDIS) Computer Health Sweep

Yamaha Diagnostic System YDIS outboard engine diagnostics

 Plug directly into your outboard's computer brain. Utilizing official factory Yamaha Diagnostic System (YDS) software interfaces, we extract the hidden real-time operating telemetry data that conventional gauges can never show you.


Service Includes

  • On-premise diagnostic connection to your engine's primary ECU
  • Extraction of comprehensive historical engine run-hour profiles (RPM range breakdowns)
  • Analysis of hidden stored fault codes and active sensor warning histories
  • Real-time fuel injector duty cycle tracking
  • Active testing of oil pressure and engine operating temperature baselines
  • Complete official PDF engine history diagnostic results emailed to you

SCHEDULE THIS SERVICE

 Comprehensive mobile maintenance and forensic diagnostic services. Genuine OEM parts, exact factory specifications, delivered at your driveway, storage facility, or dry-stack marina across Palm Beach County. 

Schedule Now

Mobile Yamaha Outboard Service Throughout Palm Beach County

 

Sentinel Marine Systems provides mobile Yamaha outboard maintenance throughout Palm Beach County, including Jupiter, Palm Beach Gardens, West Palm Beach, Lake Worth Beach, Boynton Beach, Delray Beach, and Boca Raton. Service is performed at your driveway or dry-stack marina, with scheduled 100-hour and 300-hour Yamaha maintenance, diagnostics, and routine preventative service available.
 

BACK TO TOP

 © 2026 Sentinel Marine Systems, LLC. All rights reserved. 

Powered by

  • PRIVACY POLICY