Yamaha Marine F150–F300 service schedule
Outboard ·
13 maintenance items for the Yamaha Marine F150–F300. The engine oil is changed every 100 h or 12 months. When an item has both an hour and a calendar interval, the one that comes first applies.
| Item | Engine hours | Calendar | Rule |
|---|---|---|---|
| Before each use: oil level, fuel system, cooling water tell-tale after starting | — | before each use | |
| After each use in salt water: flush the cooling passagesAfter every saltwater run. | — | before each use | |
| Break-in service: engine oil and filter, gear oilOnce, after break-in (20–25 h). | at 20 h, once | — | |
| Change the engine oil and the oil filter | every 100 h | every year | whichever first |
| Change the gear oil | every 100 h | every year | whichever first |
| Replace the fuel filter and inspect the fuel lines | every 100 h | every year | whichever first |
| Inspect the spark plugs | every 100 h | every year | whichever first |
| Inspect the anodes; replace when half wasted | every 100 h | every year | whichever first |
| Grease the steering, tilt and propeller shaft points | every 100 h | every year | whichever first |
| Replace the water pump impeller and inspect the housing | every 300 h | every 3 years | whichever first |
| Inspect the thermostat | every 300 h | every 3 years | whichever firstDealer |
| Replace the spark plugs | every 300 h | every 3 years | whichever first |
| Replace the timing beltWhere fitted; confirm the interval for your model. | every 500 h | every 5 years | whichever firstDealer |
Free in Voydar Helm: each interval becomes a maintenance task, due by hours or by date, whichever comes first.
Source
Yamaha F150–F300 owner’s manual, periodic maintenance chart, as summarised by a Yamaha parts dealer
Read from summaries of the maker's manual, not the manual itself.
Revision read: yamahaonlineparts.com service schedule summary, read 2026-10-12. Confirm against the owner’s manual for your model year.
Reference only. Intervals vary by serial number, use and climate; your engine's current manual and your dealer are the authority. Part numbers and diagrams are in the manual.