EcoService OS
Guide · Marine PM

The ultimate marine preventive
maintenance checklist

Fix It Yourself with Confidence. Every engine, generator, and electrical task your vessel needs — paired with Maya AI photo diagnostics live in your pocket, so you skip the paper logs.

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Why this matters

Boat maintenance software that earns its place on the helm

Search volume tells the story: 'boat maintenance software' (260/mo) and 'marine software' (390/mo) keep climbing because owners are done juggling spreadsheets, OEM manuals, and a soggy yard notebook. Below is the same PM schedule pro captains use — plus how Maya AI replaces the manual logging step.

How to use this checklist

Print it, bookmark it, or — better — open it in the EcoService Pro app on your phone. Every task below maps to a Maya AI photo prompt: snap the component, Maya reads the model plate, returns the failure modes, parts list, and torque specs, and writes the completion timestamp into your vessel's PM history automatically.

Engine room

Marine engine preventive maintenance

Every trip (pre-departure)
  • Check engine oil level on the dipstick — top up to the OEM mark
  • Inspect raw-water strainer; clear any weed or shells
  • Verify coolant level in the expansion tank
  • Look for fuel, oil, or coolant drips under the engine
  • Confirm exhaust elbow shows steady cooling water at start-up
  • Photograph the engine bay with Maya — instant anomaly check
Every 50 hours
  • Inspect serpentine / V-belt tension and glaze
  • Drain water from the fuel-water separator (Racor/Parker)
  • Check air intake filter for oil mist or debris
  • Verify shaft seal drip rate (1–3 drops/min for traditional packing)
  • Test bilge pump operation and float switch
Every 100–250 hours
  • Change engine oil and oil filter (OEM grade)
  • Replace primary and secondary fuel filters
  • Inspect zinc / aluminum anodes in heat exchanger end-caps
  • Pull and inspect the raw-water impeller; replace if vanes are deformed
  • Re-torque exhaust riser clamps
  • Log hour-meter reading in the app
Annually / 500 hours
  • Pressure-test the cooling system; flush heat exchanger and aftercooler
  • Replace coolant per OEM spec (do not mix glycol types)
  • Inspect and adjust valve lash (when specified)
  • Renew exhaust elbow if scale > 30% of bore
  • Replace serpentine belt regardless of visible wear
  • Pull injectors for bench-test if EGT trending up
Backup power

Marine generator preventive maintenance

Every 50 hours
  • Run under load for at least 30 minutes — never no-load only
  • Check raw-water strainer and impeller cover for weeping
  • Listen for exhaust elbow restriction (wet exhaust back-pressure)
  • Inspect AC output: voltage, frequency, and waveform if you have a scope
Every 250 hours
  • Change generator oil and filter
  • Replace primary fuel filter
  • Inspect / replace raw-water impeller
  • Clean spark arrestor (gas units) or check exhaust mixing elbow (diesel)
  • Tighten battery cable terminals; check electrolyte (flooded only)
Annually
  • Replace coolant (closed-loop side); test for combustion gas
  • Pressure-wash heat exchanger core
  • Replace exhaust mixing elbow if scale > 30%
  • Megger-test stator windings (target > 5 MΩ)
  • Inspect engine and generator mounts for sag
Power & wiring

Marine electrical preventive maintenance

Monthly
  • Check house and start battery voltages at rest (≥ 12.6 V flooded, ≥ 13.0 V lithium)
  • Verify shore-power galvanic isolator passes diode test
  • Inspect AC and DC main breakers; trip-test the ELCI
  • Look for green corrosion on terminal lugs and bus bars
  • Photograph the panel with Maya — heat anomalies surface in the IR view
Quarterly
  • Load-test every battery bank (drop ≤ 0.5 V under 50% capacity for 20 min)
  • Inspect anodes underwater and on the shaft / rudder
  • Tighten all battery terminals and grounding straps to OEM torque
  • Test bilge pump auto-cycle and high-water alarm
  • Verify shore-power cord ends — no melt, no discoloration
Annually
  • Thermal-scan AC and DC panels under load
  • Replace bonded anodes that are > 50% wasted
  • Inspect and re-bed deck fittings for water intrusion into wiring runs
  • Test inverter / charger output and battery monitor shunt accuracy
  • Refresh the wiring diagram in the boat's digital file
Manual logs vs Maya AI

Stop transcribing. Start photographing.

Paper PM logs lose 30–40% of completed tasks to forgotten transcription. Maya AI reads the model plate, the hour meter, and the fluid color from a single photo — then writes the PM record into your vessel's history with timestamps a surveyor will actually accept. That's the difference between marine software that sits on the shelf and boat maintenance software that earns its place on the helm.

  • Engine plate

    Photograph the plate — Maya auto-loads make, model, and OEM PM intervals.

  • Oil dipstick

    One photo flags color and contamination, then tells you change-now or change-soon.

  • Raw-water impeller

    Vane-loss detection from a single shot, plus the exact replacement part number.

  • AC / DC panel

    Heat anomaly detection on suspect breakers before they cook the bus bar.

Workflow

How DIY owners and pro techs both win

For DIY owners. Open Maya in the slip. Photograph the engine, generator, and main panel. Maya returns the PM tasks due this week, the parts you'll need, and a step-by-step guide grounded in OEM service literature. Mark each task done with one tap; the vessel's PM history updates instantly.

For marine pros. Roll up to the boat with the customer's PM history already in EcoService Pro. Maya pre-fills the work order from the model plate, the parts cart pulls from your truck inventory, and Stripe invoicing fires the moment you mark the job complete. Photographs from every step land in the vessel's record — proof for the surveyor, the insurer, and the next owner.

Either way, you skip the spreadsheet. That's why captains keep landing on EcoService Pro when they search for marine software and boat maintenance software — it's the only platform built around the photo, not the form.

Is EcoService Pro the best boat maintenance software for owner-operators?+

For owner-operators who want a DIY-first workflow, yes. The $29.99 DIY Pass unlocks Maya AI photo diagnostics, the full marine PM library, and unlimited vessel logs. If you also charter or run a small fleet, the Pro tier adds team accounts and Stripe payouts.

Does the marine software work offline at the slip or anchorage?+

Yes. EcoService Pro is a PWA. Maya queues photos and PM completions offline and syncs the moment you reach Wi-Fi or LTE. No data loss, no re-entry.

Can I import my existing PM history?+

Yes. CSV import is built in for hour readings and completed tasks. For paper logs, snap photos of each page — Maya OCRs the entries into structured PM records.

What marine engines and generators are supported?+

Maya's knowledge base covers the major OEMs: Yanmar, Volvo Penta, Cummins, Caterpillar, MAN, MTU, Westerbeke, Universal, Beta Marine — and on the generator side, Onan, Kohler, Northern Lights, Fischer Panda, Mase, and Phasor.

Will the records satisfy my insurance surveyor?+

Time-stamped photos plus the structured PM log are the same evidence surveyors accept from yards. Many owners report faster, cheaper renewals after switching to digital PM tracking.

Next step

Start your PM history this weekend

Download EcoService Pro, snap one photo of your engine, and Maya will pre-load the OEM PM schedule for your make and model. The first 14 days of Pro are on us.

Pricing

Plans from $39/mo

Every plan includes Maya AI photo diagnostics, smart dispatch, and the full equipment knowledge base. 14-day Pro trial — no card.