Mercury Marine Outboard Engine
Periodic Maintenance Service Schedule |
Required Service Item |
1 year or
100 hours' use |
3 years or
300 hours' use |
Before
Storage |
|
Thermostat inspection1 |
• |
• |
• |
|
Engine timing verification/Drive belt inspection |
• |
• |
• |
|
Drive shaft splines lubrication |
• |
• |
• |
|
Valve clearance inspection/ adjustment |
• |
• |
• |
| Control cable adjustment |
• |
• |
• |
|
Water pump impeller replacement1,2 |
• |
• |
• |
|
Fuel system service/inspection1 |
• |
• |
• |
| Gear lube replacement |
• |
• |
• |
| Engine oil and filter replacement (Mercury FourStroke models) |
• |
• |
• |
|
NOTES:
1 These items may require more frequent intervals if exposed to contaminates that increase wear of impeller or clog passages or filters.
2 OptiMax® 135/150/175HP models require annual water pump impeller replacement.
Verado® models and current 75HP – 115HP FourStroke models do not require periodic valve adjustment |
| The information provided above is courtesy Mercury Marine and is provided as a courtesy to Power Source Marine's customers. Power Source Marine provides no warranty on the accuracy of the information. If you have a question about the information presented here, please contact us. |