20 hour break-in
Replace engine oil and oil filter. Replace lower-unit gear lube. Inspect for break-in debris. Verify fasteners and basic running condition after the first hours on a new or rebuilt powerhead.
A weekend on the water is not interchangeable. Birthdays, tournaments, a Saturday the family already blocked off — those dates do not move because a shop calendar is full. Priority repair is how SeaBound treats that timeline as part of the job.
Call the office. Tell the service advisor the date and time the boat has to run. For a nominal fee we move your repair ahead of routine work, stage parts, and schedule the technician around that deadline so you splash when you planned to splash.
How it works: call or text (904) 200-2117. Give year, make, model, hours, location, and the hard date. We confirm whether the job can be done at the dock, what has to be ordered, and what the priority fee covers. Pricing is quoted by the office — it is not listed here yet.
Packages follow published owner-manual interval charts for typical recreational use. Due at the listed hours or the listed calendar time, whichever comes first. Severe use shortens the interval. Your model manual controls. No package pricing until we lock parts and labor.
| Two-stroke | Four-stroke | |
|---|---|---|
| Oil | Premix or oil injection. No crankcase drain like a four-stroke; watch the reservoir, mix, and spark. | Crankcase oil and filter on a clock — break-in, then 100-hour / annual on current Mercury, Yamaha, and Suzuki charts. |
| Spark | Plugs foul faster. Inspection is a regular interval item. | Inspect/clean mid-interval; replace on the annual / 200-hour class service on many charts. |
| Gearcase | Still on the clock. Milky lube is a seal failure either way. | Change at break-in and at every major interval. |
| Water pump | Inspect mid-service; replace on the 200–300 hour / multi-year service. | Same pattern. A dead impeller cooks a four-stroke just as fast. |
| Valves / belts | No automotive-style valve lash on classic two-strokes. | Valve clearance, timing belt/chain, and thermostats appear on 200 / 300 / 500-hour charts. |
Mercury’s published pattern is the 20 / 100 / 300 rule: break-in at about 20 hours, then 100 hours or one year, then 300 hours or three years — whichever comes first.
Replace engine oil and oil filter. Replace lower-unit gear lube. Inspect for break-in debris. Verify fasteners and basic running condition after the first hours on a new or rebuilt powerhead.
Replace engine oil and filter. Replace gearcase lubricant. Lubricate grease points. Check/replace spark plugs as charted. Inspect fuel filter, thermostat, anodes, timing belt, valve clearance as applicable, steering/transom, propeller, battery, cables, fasteners.
All 100-hour items plus water-pump impeller replacement (Mercury specifies 300 hours or three years). Spark plugs. 300-hour kit items (filters, thermostat, anodes, belt as equipped).
Mercury sells official 100-hour and 300-hour service kits by engine family. Mercruiser sterndrives follow the same hour-or-time rule in that engine’s manual.
Yamaha charts assume about 100 hours per year and regular flushing: 20 hours (3 months) · 100 hours (1 year) · 300 hours (3 years) · 500 hours (5 years).
Replace engine oil. Replace gear oil. Lubricate grease points. Inspect starting/idle, fuel/oil leaks, PTT, pilot water, water inlet, battery, cooling-water leakage, fuel filter and lines, shift/throttle cables, propeller nut & pin.
All 20-hour items, plus: replace oil filter. Check/replace spark plugs, thermostat, impeller/water-pump housing, timing belt as charted, external and internal anodes, cowling lock. Engine oil and gear oil replaced again.
300: replace water-pump impeller/housing; fuel pump inspect/replace as necessary; anodes; oils. 500: valve clearance check/adjust; specified internal anodes replace; OCV filter replace on applicable models.
Yamaha’s published maintenance note: change engine and lower-unit oils every 100 hours, flush regularly, replace fuel filters, treat fuel, and manage corrosion. Two-stroke Yamahas stay on the same hour columns; oiling is injection or premix.
Suzuki DF-series chart: initial 20 hrs or 1 month · every 100 hrs or 12 months · every 200 hrs or 12 months · every 300 hrs or 36 months. I = inspect, R = replace, T = tighten.
R: engine oil, gear oil, engine oil filter. I: breather & fuel line, lubrication, external anodes, bonding wires, battery, low-pressure fuel filter, idle speed, propeller nut & pin. T: bolts & nuts.
R: engine oil, gear oil. I: spark plug, breather & fuel line, lubrication, anodes (external and internal powerhead), bonding wires, battery, low-pressure fuel filter, propeller nut & pin, thermostat. T: bolts & nuts. Low-pressure fuel filter replace every 400 hours or 2 years.
200: R engine oil, gear oil, oil filter. I water pump and impeller, idle, thermostat, spark plug. 300: I valve lash. R water-pump impeller. High-pressure / pump filters carry a 1,000-hour replace note on the same chart.
These are interval packages, not a price list. Call with model and hours and we map the engine to the correct visit.
Inboard, outboard, jet skis, and personal watercraft. Professional Mobile Marine Site Fee $150. Labor $190/hour.
OEM-style maintenance on your schedule, at the boat.
Inboard, outboard, and jet / PWC. Software and hands-on.
Charging, batteries, wiring, and intermittent faults.
Radar, cameras, depth, helm screens.
Helm and cabin audio done right the first time.
Install, diagnose, and repair the gear you fish with.
Engine and rigging work planned around the hull and the budget.
Same mobile standard, smaller machines.
Lights, bearings, brakes, winches.