Yamaha OX66 Full Disassembly - Rebuild Outboard

This is how to disassemble a Yamaha OX66 outboard. The Full disassembly for rebuilding an outboard. This OX66 dropped a cylinder. It will be rebuilt instead of putting on a new powerhead. If you are looking to rebuild a Yamaha Outboard, hopefully, this video will help. Also explained is, VST tank, O2 sensor, and LP fuel pumps. Among other things like the lower unit.
Yes, it has happened again. I had a lot of requests last time on showing the total disassembly so that is what I am doing this time.
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[@tedolmsted1810]

A picture is worth a thousand words and a video is worth a million! I just bought one of these and this video walked me through where things are that I need to service! Thanks for making this video. Very helpful.

[@JETZcorp]

As someone who's fairly familiar with motorcycle 2-strokes and automotive 4-strokes, it is WEIRD seeing those two worlds smashed together in an engine like this. I'd love to have a closer look at the ports on this thing. The spacing between the cylinders has got to create some really interesting challenges for the transfer ports on a loop-scavenged engine like this.

[@jeremycallihan3245]

Use a supper long needle nose vise grip on the nasty clamp. Once it's stabilized you can wedge the nut into a socket using electrical tape. You can push down on the socket and extention. It will force the threads into the nut. Turn 2 man 2hr cluster into a 5 minute job.

[@edrussell7960]

So far this is the best outboard tear down I've found online. I just got a grady white with a motor that is going to need work so thanks for the walk through.

[@aaronreynolds2213]

Did you find the cause of the motor blowing up ??

[@kevinhill3549]

So what happened did you rebuild it? And if so what was the total damage. I have a 200hp basically same motor 95 psi per cylinder thinking about doing a rebuild. Got a qoute 7 grand. Either that or buy a 4 stroke 30k i think id rather rebuid this one if necessary lol.

[@AS-pq3hu]

You have done this before lol...

[@keithtauber4153]

I have this exact same engine and model year 1999. I had my engine blow up on me while using it and had it rebuilt. I paid $5,000 to have it redone over 10 years ago. After wards, I used it but then had to stop using it. Finances got cut when I lost my job and was married so essentially this boat has sat unused for 12 years now. Hard to imagine but it is true. I ran the gas out of it when I first parked it. It ran fine when I stored it but after all this time, what would you suggest I do to get it back up and running? I have never cranked it one time in those years. Thanks for any suggestions.

[@markshaw8692]

I can’t find anyone to look at mine..hah

[@minminzaw7505]

Thanks so much

[@bryangraves9608]

Best video I have ever seen regarding Yamaha OX 66 Service, Great Job, thanks!

[@saltyshocks7780]

Just got a 2001 200HP OX66 and having bogging issue and chasing fuel pumps and injectors. This video has helped me learn a lot on how this system works!

[@jciam5135]

I'm not a fishing fanatic but just based on the time and effort you put in this video for us novices, I'm freaking subscribing. you should do more how to videos

[@mattbackvass]

came here to say thank you for making this video, it's awesome.

[@toasterj3643]

nice video this is what i might have to do after my 200 hp 1995 yamaha outboard steering arm bracket rotted away (broke) a lot of work

[@seantemple71]

perfect video great work ethics. loved it!

[@251suzuki]

Thanks for the tear down video, Do you have a video of putting it back together?

[@IcarusMan2]

Yes, great video !!

[@andrewvillanueva4222]

Thank you awesome video

[@jbilok]

liked the video but was hoping to see exhaust removal, any suggestions on removing these without snapping them all ??