Yamaha F50T - power tilt problem

[Gary N]

Anyone? I think it is the slotted head bolt because the hex headed bolt looks very low in the body of the pump.

[opie]

Gary,
You probably did not know that we can not see your picture link since it is password protected to that other forum......
If you could post your picture directly, maybe someone could answer....

[Gary N]

Gary,
You probably did not know that we can not see your picture link since it is password protected to that other forum......
If you could post your picture directly, maybe someone could answer....

No, I didn't know. Thanks for pointing that out.

I think the picture should be visible now.

[Gary N]

I'm still not sure which is the fluid filler hole. Another board member kindly sent me the 2000 parts list for the F50 which can be downloaded below:
http://www.anneddlon.co.uk/Yamaha%20F50 ... 20List.pdf

The tilt mechanism can be seen on pages 35 and 36. The slotted head which I think must be the filler in the picture above is item 38 which is listed as the valve assembly and there appears to be 2 of these on opposite sides of the main body. Item 43 looks like the hex headed bolt and is described as "Plug, reservoir". It's not clear whether the "Plug, reservoir" is for draining or filling. On our engine as shown in the photo above it appears to be too low on the main body and if opened, looks like it will drain most of the fluid in the tilt body.

I am starting to think that our F50 has a different tilt mechanism to the 2000 model. It definitely isn't the 2001 model.

Also when the tilt motor was removed the fluid was almost up to the top of the body. So I am considering filling the body up, fitting the motor on top. Anyone know what would happen if the fluid was over filled?

[opie]

Gary,

I waited for a Yamaha owner here to respond, but I am thinking that hardly anyone else has your tilt plug setup. As you say, the link you just gave with the parts list does not match your setup as the two plugs you identify are not lined up one above the other like yours. And boats.net, the best site for all engine exploded-diagrams, does not match your tilt setup for any year I can find. Here is Neale who does have your setup (link for Neale) and the poor man was told that the filler plug was the top one and then the filler plug was the bottom one on the same forum page! So, perhaps your tilt is very rare and not what Yamaha normally uses. I can see that your inquiries on the Yamaha forum are producing no good answers as well.

With that said, maybe someone here can use logic and give an answer to try. It looks like trial and error may be your only hope. I love a mystery and you sure have one. What you have may be a non-Yamaha tilt on a Yamaha outboard..... . Any chance of contacting the original selling dealer?

[GART]

Your power tilt is very different to mine,(2001 F50) the hex head on mine is at the top of the reservoir and there is an Allen key to drain the fluid at the bottom.
If you are buying a new pump surly the people you are buying it from can tell you. I would be very careful about overfilling the hydraulics as you could end up blowing all the seals on the pump.

[Gary N]

Your power tilt is very different to mine,(2001 F50) the hex head on mine is at the top of the reservoir and there is an Allen key to drain the fluid at the bottom.
If you are buying a new pump surly the people you are buying it from can tell you. I would be very careful about overfilling the hydraulics as you could end up blowing all the seals on the pump.

The 2001 model does appear to be quite different looking at the online parts diagrams. However, ours is exactly the same as the one in the photo which was taken of another 2000 year F50. I think you are right about over filling the fluid.

[K9Kampers]

Gary-

After the 'F50T', there are three more letters for the model designation. Can you please list the complete model#?

[Gary N]

Gary-

After the 'F50T', there are three more letters for the model designation. Can you please list the complete model#?

I believe it is a FT50BET and the serial no is FT50BET 64J40xxxx bought in Jan 2000 from BHG Marine in Bucklers Hard, Hampshire, UK.

[K9Kampers]

Gary-

After the 'F50T', there are three more letters for the model designation. Can you please list the complete model#?

I believe it is a FT50BET and the serial no is FT50BET 64J40xxxx bought in Jan 2000 from BHG Marine in Bucklers Hard, Hampshire, UK.

For Yamaha, the last letter designates the model year. 'T' indicates the model year 1995.

[opie]

It's me again, non-Yamaha advice, so please verify....

In my opinion, the answer was there in the parts list you linked to above. If you remove the other clutter in the parts picture and scrunch your head around so that you imagine looking at the rear of the pic (note the 'fwd' notation) it appears the item "43" you mention is the same as your model. It does seem low, but only one reservoir plug for both fill and drain is likely. As you check level with the motor raised, most fluid will be in the cylinder and if it was dry you would have to use the manual release screw and get it up-and-down a few times to fill it each time you raised it. And then there are many websites with advice on filling tilt reservoirs and bleeding them thru use of the motor a few times...

All that being said, my Honda reservoir plug is reasonably higher, which makes more sense than your picture. I can understand your frustration with seeing a fill plug on the very bottom of your assembly. It does seem odd. But, that could be just the way it is, with the majority of fluid pushing up in the piston when it is raised to check the level. Good luck.

[Gary N]

I spoke to the dealer who sold the original engine in 2000 and they confirmed that the hex head is the filler plug on this model but also agreed that it is very low on those models. He said that a trick that works is to lift the engine up and secure it, then open the release screw on the side and then run the tilt motor to distribute the fluid, check level, fill, run motor, etc. Anyway this method worked and we managed to get a decent amount of fluid into the tilt body. The tilt is now working fine now so many thanks to everyone who contributed.