Yamaha F225 Outboard Rebuild Part 3: Bottom End Teardown | Boats.net

See how to tear down the bottom end of your Yamaha F225 outboard.
In part 2 of our series, we removed the cylinder heads. Now, we’re going to tear down the bottom end of our F225. John will show you how to remove the cooling cover and oil lines before accessing the crankshaft. He’ll show you how to get to the connecting rods and pull the crankshaft.
Along the way, we’re going to find out why we’ve seen oil leaking from the exhaust in this engine. It isn’t pretty.
See how to remove the powerhead on your F225 here: • Yamaha 225 Powerhead R...
Then see how to remove the fuel system and flywheel on your Yamaha outboard: • Yamaha F225 Outboard R...
See how to remove the cylinder heads on your F225: • Yamaha F225 Outboard R...
See the crankshaft and piston diagram for your F225: www.boats.net/...
See the crankcase diagrams:
www.boats.net/...
www.boats.net/...
See the Yamaha 225 compression test: • How to Compression Tes...
See the Yamaha outboard leakdown test: • Yamaha Outboard Leak D...
VIDEO HIGHLIGHTS:
Removing the cooling cover - 0:30
Removing oil lines and linkages - 1:20
Removing pistons and crankshaft - 2:19
Separating crankcase halves - 6:30
Removing the oil pump - 6:50
Find Yamaha outboard parts here: www.boats.net/...
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In the video we’re working with a Yamaha F225 outboard motor, but you may have similar steps for your Yamaha outboard. If you’re not sure whether these steps apply to your motor, leave a comment and we’ll get back to you.
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[@mikeyeeee]

This comes at the right time, currently doing the same thing for my 2005 f225. The corrosion exhaust issues are horrible. Thanks!

[@grndiesel]

Yikes! I might be shopping for one of these on the used market, but...YIKES!!

[@aamaddosani9759]

Nice video sir

[@listentovictor]

John, you are the man!!!!
Sweet video(s)

[@trustytrucking9917]

Awesome video for those trying to sell this motors for $10k $15k. They are great motors and very reliable but they rot and not only on the exhaust. This isn’t an isolated case.

[@mikenelson1688]

What engine stand and adaptor are you using

[@JoseReneGaytanSoria-uz3tq]

Hola hoyga porke miblok resien reparado sale marcado alos lados de las mangass es normal

[@Scottcrating1]

Your videos are great!
I know Yamaha is #1 and there are more Yamahas out there than any other manufacturer but could you do the same on Honda BF225?

[@JoseReneGaytanSoria-uz3tq]

Miblok fue enmangado y semarco aun lado las falda como si ubiera faldiado los pistones y medaño 3 pistones akese deveria falta de asentamiento

[@hybridorbital85]

Can you please explain how corrosion occurred this far into the exhaust? I thought that water injection occurs much later in the exhaust system. At least in other marine engine's I've dealt with (not outboards). Is this a problem native only to this generation of yamaha? I hear the early 2000 225s were the absolute worst for this.

[@rudiesteenkamp5581]

Hi John, I need to replace the exhaust on my 04 F225 Yamaha due to corrosion. I ordered the parts kit from Sim including a new oil pump. Do you have a video out doing this repair yet. Thanks

[@JT-hi6uc]

Please make a video of this repair and diagnosis.

[@johnburton6418]

How does exhaust corrosion, caused by faulty manufacturing process for the exhaust, eat into an engine block? Is that saying that if you have exhaust corrosion you'll eventually have it in your block too? How do you prevent it from destroying your block?

[@JoseReneGaytanSoria-uz3tq]

El blok fue en mangado y en 2 dias se marco como si ubieras faldiado el pieston en el blok y medaño 3 pistones y ebisto lamayoria delos blokes keles pasa asi nose si es por falta de asentamiento