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OX66 - How Many Hours Do You Typically Get Out of Your O2 Sensor?

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OX66 - How Many Hours Do You Typically Get Out of Your O2 Sensor?

Old 10-07-2020, 10:20 AM
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Default OX66 - How Many Hours Do You Typically Get Out of Your O2 Sensor?

OX66 - How Many Hours Do You Typically Get Out of Your O2 Sensor?

I'm curious when I'm going to need a new O2 sensor.
Old 10-07-2020, 10:53 AM
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0X66 and Ox sensors on T-225's is why I have never purchased another yamaha, went through 6 before warranty went out and then 2 more was enough for me. sorry you have them.
Old 10-07-2020, 11:44 AM
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I had an OX 250 for ten years and never needed a new one. I just cleaned them every 100 hrs.
Old 10-07-2020, 01:00 PM
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Originally Posted by HeadHunt View Post
I had an OX 250 for ten years and never needed a new one. I just cleaned them every 100 hrs.
This is what I have been doing for the last three seasons and I believe it is still operating properly.
Old 10-07-2020, 01:55 PM
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Sold the boat this year, but an '03 OX66 150 with 653 hours and on the original O2 sensor. As said above just cleaned it with regularly yearly maintenance.
Old 10-07-2020, 01:58 PM
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Been running OX's for 15 years. Fouling of the O2 sensors is almost always a product of over-oiling. And perhaps compounded by, ironically, using yamalube. If the oil linkage is properly adjusted, should be a once-a-year maintenance/cleaning item. The oil linkage joint is plastic, and can and does fail. When it does, the oiling mode defaults to the max oiling setting. The engine will usually run fine, but foul O2 sensors. This should be checked periodically as well.

But I read about lots of folks who seem to think more is better when it comes to 2-stroke oil. Like many things, too much of it...including 2-stroke oil...is not a good thing. And burn Penzoil XLF

Last edited by jfbetz; 10-07-2020 at 02:04 PM.

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