What a 100-hour service actually includes
A real 100-hour service isn't an oil change with a fancy name. It's the full factory maintenance interval — the one Yamaha, Mercury, and Suzuki all build their warranty schedules around. Skip it and small problems get expensive.
Here's what we do on every 100-hour visit:
- Engine oil and filter change
- Lower unit gear lube drain and refill
- Water pump impeller inspection
- Spark plug inspection or replacement
- Fuel filter replacement
- Full greasing of all fittings and pivot points
- Sacrificial anode check and replacement
- Prop and prop shaft inspection for fishing line and seal damage
We also pull the cowling and look at everything — belts, hoses, wiring, corrosion, fuel lines. If something's about to become a problem, you hear about it before it strands you.
Why hours matter more than months in Florida
Up north, boats sit half the year. Here on the Treasure Coast, a lot of boats run year-round in warm salt water — the hardest environment there is on an outboard. Salt attacks the cooling passages, the anodes, and every unprotected metal surface. Heat breaks down oil faster.
That's why the schedule is written in engine hours, not calendar months. A boat that runs 100 hours in four months needs service in four months. A boat that only ran 40 hours still needs annual service, because gear lube, fuel, and grease degrade whether you run the engine or not. Whichever comes first — 100 hours or one year — that's your interval.
The full maintenance schedule: 100, 300, 500 hours
Not sure where your engine sits? We can pull the hours off the ECU on most modern outboards and tell you exactly what's due.
What affects the cost
A single outboard typically runs $220 – $380, but every boat is different, so we quote each job instead of guessing. The main factors: how many engines you run (twins and triples take longer and use double or triple the parts), how long it's been since the last service (a neglected engine usually needs more than the standard list), and which parts your specific engine calls for — filters, plugs, anodes, and lube vary by brand and model.
Tell us your engine make, model, and approximate hours, and we'll give you a real number before we ever show up. Use the instant estimator → or call (561) 602-1177 — no surprises on the invoice.
Why mobile beats the yard
The traditional way: hook up the trailer, haul to a yard, drop the boat, wait a week or three, haul it home. If your boat lives on a lift or in a slip, add a haul-out on top.
The mobile way: we come to your dock, marina, or driveway with everything on the truck. The service happens in front of you — you can watch the oil come out, see the old impeller, ask questions while we work. Most 100-hour services are done in a single visit, and your boat never leaves the water.
Due for the big one?
Tell us your engine and hours. We reply with a real number and a real date.
Get a quoteFAQ
How often should I service my outboard?
Every 100 hours or once a year, whichever comes first. In Florida salt water, don't stretch it — salt and heat are harder on an engine than hours alone. If your boat sits in the water year-round, the annual service matters even in a low-hour year.
How much does a 100-hour service cost?
A single outboard typically runs $220–$380 — the exact number depends on your engine count, model, and how long it's been since the last service. Tell us your make, model, and hours and we'll give you a firm quote before we schedule. Call (561) 602-1177.
Do you replace the impeller at every 100-hour service?
We inspect it at every 100-hour service and replace it every 300 hours or 3 years — sooner if we see wear, cracking, or set vanes. Florida boats often need impellers earlier than the book says because of sand and salt. More on water pumps and impellers →
Can you service twin or triple outboards in one visit?
Yes. Multi-engine service is normal work for us — twins and triples get done in the same trip. Pricing on additional engines is discounted since the trip is shared.
Will mobile service keep my factory warranty valid?
Yes. Manufacturers require that maintenance be done on schedule with correct parts and documented — not that it be done at a dealership. We work on Yamaha, Mercury, and Suzuki, we use spec parts and lubricants, and you get a written service record for your file.