Preventive Maintenance Schedule for Recreational Boats

Every outing

Visual bilge check, float switch test bump, navigation lights if night, tire pressures if trailering, kill-switch lanyard present, fuel sufficient + reserve.

Every 50–100 hours / annually (adjust to OEM)

Engine oil/filter (4-stroke), gearcase oil, fuel filters/water separators, belts, impellers per interval or sooner in sediment-heavy waters, grease points.

Annual

Anodes, battery load test, fire extinguisher inspection, hose/clamp survey, seacock exercise & service, safety gear expiry check, trailer bearings/brakes/lights.

Multi-year

Bottom paint as needed, bellows/gimbal on sterndrives, heat exchangers/manifolds on inboards (especially saltwater), upholstery UV care, electronics backups.

Logbook discipline

Hours + date + part numbers + yard invoices. Future you (and future buyers) will pay you back.

FAQs

Can I DIY impeller changes? Many outboard owners do; confirm model procedure and carry a spare on longer trips if skilled.
Freshwater vs salt intervals? Salt generally shortens corrosion-related intervals—rinse and anode vigilance matter.