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Old 03-15-2007, 02:54 PM
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Default Need Help with re-install F225 lower unit....

I'm a little puzzled and frustrated after an easy takedown and replacing of the water pump on my F225.

I'm in the process of replacing the lower unit and as I get the driveshaft up to the point where the splines should engage I can't get any further.

Is this normal to have to wiggle and turn and sweat to get the splines aligned properly? Before I waste any more time and energy I figured I'd ask this question.

Is this normal or is there a step I'm missing?

Thanks,

Richard

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Old 03-15-2007, 04:13 PM
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Default Re: Need Help with re-install F225 lower unit....

Got it!...... I just hadn't put in my alloted time required. It's was the hardest part of the job.

Thanks.
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Old 03-15-2007, 05:14 PM
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Default Re: Need Help with re-install F225 lower unit....



Hope you made sure there was no grease on the TOP of the drive shaft............

Kev
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Old 03-15-2007, 06:19 PM
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Default Re: Need Help with re-install F225 lower unit....

Quote:
flynny7 - 3/15/2007 5:14 PM



Hope you made sure there was no grease on the TOP of the drive shaft............

Kev
OK... I'll bite..... why should there be no grease on the top of the drive shaft?

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Old 03-15-2007, 06:51 PM
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Default Re: Need Help with re-install F225 lower unit....

It's a P.I.T.A. It is much easier if you have two people. One holds the lower unit and the other can turn the shaft in very small increments to line it up. That is always the part that I dread when doing my water pumps.
I have always put grease on the splines, I'm also curious. Did yours have a small rubber stopper on the top of the shaft? My Yamaha HPDI's do not, but my old Merc Black Max did.
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Old 03-15-2007, 07:15 PM
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Default Re: Need Help with re-install F225 lower unit....

Not on top. It will get smashed in there and change the whole preload in the L/U gears and bearings.
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Old 03-15-2007, 07:43 PM
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Default Re: Need Help with re-install F225 lower unit....

Glad you got it. Realigning the lower unit and getting it fully seated can be one of the hardest parts of a water pump change. Make sure you got the shift gear lined up and in the upper gear. If it isn't, you won't be shifting at all.
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Old 03-15-2007, 07:43 PM
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Default Re: Need Help with re-install F225 lower unit....

Quote:
timebandit - 3/15/2007 6:15 PM Not on top. It will get smashed in there and change the whole preload in the L/U gears and bearings.
Then what would you suggest using to prevent the drive shaftsplines seizing to the crank splines?

FWIW.......Saw a interesting picture of a Yamaha F225 hanging upside down by the gear case with all of the bolts removed. Drive shaft seized to the crank. 5 year old engine that was on its original water pump.

Andy
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Old 03-15-2007, 08:03 PM
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Default Re: Need Help with re-install F225 lower unit....

Quote:
SIM - 3/15/2007 7:43 PM



Quote:
timebandit - 3/15/2007 6:15 PM Not on top. It will get smashed in there and change the whole preload in the L/U gears and bearings.
Then what would you suggest using to prevent the drive shaft*splines seizing to the crank splines?

FWIW.......Saw a interesting picture of a Yamaha F225 hanging upside down by the gear case with all of the bolts removed. Drive shaft seized to the crank. 5 year old engine that was on its original water pump.

Andy
SIM:
I did not say that you should not put it on the spline, just don't make a lump on top.
Oh , I have seen a million Yahama's in that position over the years for a lot of reasons, that being the biggest one. Most of them were 8HP kicker's that got thrown away because you could not pull the rope to start it any more. The shaft was seized in that guide bushing. Powerhead bolts? You can forget about it. They are brutal that way. Need I remind you that I have doing this professionally for a lot of years. Almost none of those motors ever ran again. We stopped taking them in a long time ago. And Honda's we will not touch either. I was told that we use to sell Honda, this is before my time at the barn. And they were worse. There was no way to back up a product like that if it was shot after one year in the saltwater. $500 to change a water pump did not go over too well. What a chronic disease. I see nothing has changed over the years. I looked at my last Yahama 8 years ago. Never again will I work on those . They just corrode like a bastard. SWS my azz.
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Old 03-15-2007, 08:15 PM
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Default Re: Need Help with re-install F225 lower unit....

Hey Time.........I am not denying that you have done this for a long time.......but I think maybe what was originally posted about greasing the top of the drive shaft in your sense of the word and when a DYI says that they grease the top of the shaftare possiblytwo different things. I could not see any reason to put a glob of grease on top of the drive shaft. Not sure it would even stay there on the install.

We are located in freshwater so the "seizures" we see are far and few between. Actually can beat the flat rates! [img]../images/emoticons/biggrin.gif[/img]

And by the way just so you are aware of it......





































Opti's suck! jk [img]../images/emoticons/biggrin.gif[/img]

Andy
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Old 03-15-2007, 08:22 PM
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Default Re: Need Help with re-install F225 lower unit....

Freshwater? Than you are lucky. Some don't have that luxury. Therefore, the Japanesse O/B is not such a luxury anymore. It can be a terror and you will end up hating it. Seriously.
I swear they have never heard of salt in Japan. SWS is a decal, nothing more.

Help putting it back? How the heck did you get off? No one can answer your question because they have never seen anyone do that before.
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Old 03-15-2007, 09:21 PM
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Default Re: Need Help with re-install F225 lower unit....

Quote:
timebandit - 3/15/2007 7:22 PM Freshwater? Than you are lucky. Some don't have that luxury. Therefore, the Japanesse O/B is not such a luxury anymore. It can be a terror and you will end up hating it. Seriously. I swear they have never heard of salt in Japan. SWS is a decal, nothing more.
And what Mercury has the patent on non-corroding aluminum? [img]../images/emoticons/kidding.gif[/img]

And btw..... I personally do not-will not hate anything that brings in an income to my business. If you do......you might want toconsider another line of work..........saybasket weaving??? Calms the nerves. [img]../images/emoticons/cool.gif[/img]

If I had that many Honda's and Yamaha's coming into my shop corroding rightoff the transom, call me stupid but it would seem to me to be a perfect timefor you tosell them one of those non-corroding perfectly engineered black engines! [img]../images/emoticons/razz.gif[/img]

Now please don't get your panties all in a bunch................you know I was only giving you a hard time. [img]../images/emoticons/thumbsup.gif[/img]

Andy
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Old 03-15-2007, 10:45 PM
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Default Re: Need Help with re-install F225 lower unit....

I am not in a bunch. I am PUI right now. Calms the nerves. Need more cans to build new Yahama's? I am helping them take over America, right?
OH, falling off is fine with me, I wanted that anyway.

It is in the time between the birth and the death that I want nada to do with. I could not imagine woking in a place that sell's those and the brand new boats they rode in on. All of which is under warrenty, and having to go through that situation every day. Again all for free because it is warrentyed forever against everything. I understand the part about bringing income, but only up to certian point. Than it begins to cost you in non-billable time. And than is time to show someone the door. And that is what happend to our barn. Tough to tell someone thier 2 year old import O/B is already a gonner. After you have already had the boat for 2 weeks and have made no progress getting it apart. What I am saying is that you can't make any headway against 120 boats that way. This my seem funny, but even those POS Force motors treated me a lot better than Yahama's and Honda's for a lot of years. Those are what repalced the imports for income in '91 for a lot of years after. And still do. And the OMC products of the day. There was more than enough stuff to do in between hanging new Merc's.
XK360 rocks.
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Old 03-21-2007, 09:35 PM
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Default Re: Need Help with re-install F225 lower unit....

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Old 03-21-2007, 10:48 PM
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Default RE: Need Help with re-install F225 lower unit....

A Yamaha mechanic told me that after one or two seasons in salt water, even if very low hours you should drop the lower unit because Yamaha doesn't use anything like Neverseize in production due to it might affect the surface that is to be painted. That sounds way out there but If I really try, and having some experience with manufacturing I might almost believe that.
So naturally I had my F225 with 135 hours torn down and water pump and thermostats replaced. The impeller looked brand new.
If you call replacing the impeller a "water pump job" it sounds better and you can charge more.
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Old 10-11-2013, 03:07 AM
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Default Lower unit sticks requiring some hammeing

Quote:
Originally Posted by SIM View Post
Then what would you suggest using to prevent the drive shaftsplines seizing to the crank splines?

FWIW.......Saw a interesting picture of a Yamaha F225 hanging upside down by the gear case with all of the bolts removed. Drive shaft seized to the crank. 5 year old engine that was on its original water pump.

Andy
I have three 2005 F225 four strokes with 450 hours.

I dropped two LUs on my outside engines for the first time ever at our beautiful new ramp (water temps 86%). Just play the tides and it's a piece of cake. Ramp has dock with polls to hold your boat. Anyway..

The port LU was "hung up" pretty good and took some hammering to get it to drop a 1/16th inch so to get a few screw drivers in there (here and there) and keep hammering her off/down with 2 by 4 between hammer. Took some time. Stuck up top pretty good!

Needless to say, after replacing the impeller (and gear lube), the LU went up much easier . Once we got the first few bolts started we just tightened it up. I greased the spline of course, and the boat has been run 7 hours since the job and WP is working fine. I like to check the gear box screws after this job for any lube leaking.

The starboard engine LU (also never removed in 8 years and 450 hours) came off like she was brand new. No hammering, just lessened the bolts and she started to fall/breakaway. Greased the spline with Yamaha grease gun and she went back on just as easy as she came down.

The old gear box oil was jet black with no water at all - and that's what every boater wants to see in old lube. Also the amount of lube/oil we caught in the jars were the same in volume.

I'm searching Andy's SIMs links for few day looking for the link to change the thermostats for these engines. Anyone that can point me to a picture procedure for the F225 (2005) it would be greatly appreciated.

Thanks.
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Old 10-11-2013, 03:26 AM
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Quote:
Originally Posted by timebandit View Post
SIM:
I did not say that you should not put it on the spline, just don't make a lump on top.
Oh , I have seen a million Yahama's in that position over the years for a lot of reasons, that being the biggest one. Most of them were 8HP kicker's that got thrown away because you could not pull the rope to start it any more. The shaft was seized in that guide bushing. Powerhead bolts? You can forget about it. They are brutal that way. Need I remind you that I have doing this professionally for a lot of years. Almost none of those motors ever ran again. We stopped taking them in a long time ago. And Honda's we will not touch either. I was told that we use to sell Honda, this is before my time at the barn. And they were worse. There was no way to back up a product like that if it was shot after one year in the saltwater. $500 to change a water pump did not go over too well. What a chronic disease. I see nothing has changed over the years. I looked at my last Yahama 8 years ago. Never again will I work on those . They just corrode like a bastard. SWS my azz.

Come now, a MILLION?

And Mercs don't corrode?
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Old 10-11-2013, 05:05 AM
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Default

I'm searching Andy's SIMs links for few day looking for the link to change the thermostats for these engines. Anyone that can point me to a picture procedure for the F225 (2005) it would be greatly appreciated.

Thanks.[/quote]

Here it is.

http://www.simyamaha.com/category_s/1986.htm





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