Yamaha F115AETX Owner's Manual
![Yamaha F115AETX manual cover](/images/dc5b562dcf7a46f437fd6327/thumbs/thumb175x175.webp)
The recommended oil type for the Yamaha F115AETX is Yamalube 4M 10W-30 or 20W-40 for optimal performance and protection.
To perform a basic maintenance check, inspect the oil level, check the propeller for damage, inspect fuel lines for leaks, and ensure the cooling system is functioning properly.
To winterize, flush the engine with fresh water, treat the fuel with stabilizer, change the engine oil, and store the engine in a dry place.
Check the battery connections, ensure there is fresh fuel, inspect the spark plugs for wear, and verify the engine kill switch is not engaged.
The correct propeller size can vary based on usage, but a common size for the F115AETX is a 13 1/4 x 17 pitch propeller. Consult your manual for specifics.
The water pump impeller should be inspected annually and replaced every 2-3 years, depending on usage and conditions.
Yes, ethanol-blended fuels up to 10% (E10) can be used, but avoid higher ethanol content fuels as they can cause damage.
To check the oil level, tilt the engine to an upright position, remove the oil dipstick, wipe it clean, reinsert it without threading, and then remove it again to check the level.
For the first 10 hours, operate the engine at varying speeds below 4000 RPM, avoid full throttle, and do not run at a constant speed for extended periods.
Maintain regular service intervals, ensure the propeller is undamaged and correctly sized, and avoid overloading the boat to improve fuel efficiency.