High-rpm Personal Watercraft (PWC) operating in harsh saltwater environments require specialized mechanical care and ultra-tough structural repairs. Mobile Marine Doc provides full-service mobile mechanical diagnostics, jet pump overhauls, WEST SYSTEM® epoxy fiberglass repairs, and emergency drown-revivals for Sea-Doo, Yamaha WaveRunner, and Kawasaki Jet Skis throughout Key West.

Specialized PWC Mechanical & Composite Solutions

1. Structural PWC Epoxy Hull Repairs (WEST SYSTEM®)

• High-Impact Epoxy Hull Repairs: Structural repair of deep gouges and cracking caused by beaching or collisions, using WEST SYSTEM® 105 Resin and 205 Fast Hardener mixed with high-density fillers for maximum tensile strength and impact resistance.
• SMC & Composite Compatibility: Precision bonding and glassing prepped specifically for Sheet Molding Compound (SMC) and composite PWC hulls.
• Gelcoat Finishing Prep: Professional amine-blush decontamination (warm water & mechanical scrub) and sanding prep to ensure maximum adhesion for matching gelcoat over structural WEST SYSTEM® epoxy repairs.

2. Jet Pump & Drivetrain Overhauls

• Wear Ring Replacement: Removal of scored or swollen wear rings and installation of OEM or heavy-duty stainless steel/composite replacement rings.
• Impeller Refurbishing & Clearance Tuning: Setting blade-to-housing tolerances (aiming for .005″ – .015″ clearance) to eliminate cavitation and restore hole-shot acceleration.
• Bearing & Seal Pack Rebuilds: Replacement of compromised pump bearings, shaft seals, and oil seals to protect the jet drive drivetrain.

3. On-Site Engine & Electrical Troubleshooting

• Carbon Ring Water Seals: Carbon seal replacement to prevent hull water intake.
• Fuel & Ignition Diagnostics: Injector cleaning and electrical system troubleshooting.
• Marine Electrical Component Service: Heavy-duty starter, battery, and solenoid replacement built for high-salinity exposure.

4. Emergency Submersion & Drown-Revival Services

• Rapid Saltwater Engine Flush: Immediate de-watering of engine cylinders, intake, and exhaust manifolds following submersion.
• Pickling & Engine Block Preservation: Multi-stage oil replacement, cylinder fogging, and electrical connection corrosion treatment to save engine blocks.

Immediate Response Support

Loss of Acceleration or Hull Gouges? Whether your PWC is cavitating due to a worn pump ring or has suffered a structural hull strike, we deliver fast dockside service to get you back on the water.