2004 Yahama 4 stroke 225hp oil filters
The 4 stroke Yamaha outboard requires a quality SAE 10W-40 motor oil.
SAE 10w30 oil or Yamaha 4 Stroke Engine Oil
Yamaha's Yamalube, 2 stroke oil is a good choice.
Yamaha's Yamalube, 2 stroke oil should work pretty good
its a 2-stroke, you keep adding oil
a good quality 2 stroke oil
any 2 stroke oil will do there all pretty much the same
Anonymously
it is oil injected
The mixture ratio for Yamaha outboards is 50:1 gas/two stroke oil. That is approximately one pint of gasoline to a plastic coke bottle cap full of two stroke oil.
No oil filter, the YZ125 is a 2 stroke.
Try replacing your current 2 stroke oil with 100 percent synthetic 2 stroke oil. Available at any motorsports dealer. Worked for my Razz. Has not smoked since.