2007 Yamaha F50TLR - Lower Unit Stuck

[Mdrye]

I’m hoping someone out there can help, I’m stuck. I got this motor for a great deal, too end runs great, knew lower unit needed clutch dog.

While doing the clutch, I decided to do water pump etc, problem is the lower unit is stuck. I assumed it was driveshaft from not being greases. Unit dropped this much easily then stopped? Any help would be greatly appreciated.

 

[wmgeorge]

The shift linkage on My F40 TLR had a threaded coupling that had to be unscrewed. On the top left of the picture above where that black tube is sticking out, the piece just above comes off with 2 bolts and you can gain access to that coupling. Just replace the entire pump impeller and outside housing all Yamaha parts around $100 and add a little grease to the splined shaft when putting it back together. The service manual wants you to also use a little marine grease on the impeller.

 

[99yam40]

good chance the drive shaft is rusted into the crank shaft

 

[Mdrye]

good chance the drive shaft is rusted into the crank shaft

Thought that too, but it’s definitely post above, it’s only sticking at the steering, will confirm

 

[wmgeorge]

My F40 I had apart 3 weeks ago, same year had grease on those splines, was that coupling on the shifting rod. When you get done make sure gearbox is in Neutral as well as the remote lever. Then reinstall that coupling- Got my parts from that place in Denver.

 

[wmgeorge]

My F40 I had apart 3 weeks ago, same year had grease on those splines, was that coupling on the shifting rod. When you get done make sure gearbox is in Neutral as well as the remote lever. Then reinstall that coupling- Got my parts from that place in Denver.

BTW this has nothing to do with steering, that rod is for Shifting the lower unit.

 

[brodmann]

If it's the shifting rod, when you shift from forward/neutral/reverse, the lower unit will probably move up/down. I'm sure that's what it is.

 

[99yam40]

If it's the shifting rod, when you shift from forward/neutral/reverse, the lower unit will probably move up/down. I'm sure that's what it is.

the newer ones did not pull up/down to shift, just the old motors.
newer ones twisted back and forth

notice the splines

 

[wmgeorge]

Mine is a 2007 built in 10/06, makes no difference if its a coupling it needs to be unscrewed.

 

[99yam40]

well did you even look?
the parts breakdown for his 2007 F50 show it does not have a threaded shaft or a nut

 

[wmgeorge]

well did you even look?
the parts breakdown for his 2007 F50 show it does not have a threaded shaft or a nut

It shows a clip, not sure if that is what is holding it or not? There were some changes to the F50 over the F40, all the 50s seem to have a clip at the bottom and a splined shaft at the top. The 40s never seemed to go that route. Not sure what he has got, when he checks back in we will know.

 

[Mdrye]

My F40 I had apart 3 weeks ago, same year had grease on those splines, was that coupling on the shifting rod. When you get done make sure gearbox is in Neutral as well as the remote lever. Then reinstall that coupling- Got my parts from that place in Denver.

Can you explain how it unscrews or what u did to replace?

 

[wmgeorge]

Can you explain how it unscrews or what u did to replace?

It looks like its just the F40 the shift linkage travels up / down as apposed to rotate. There is a threaded coupling that holds the two sections together as I described above.

 

[Mdrye]

My F40 I had apart 3 weeks ago, same year had grease on those splines, was that coupling on the shifting rod. When you get done make sure gearbox is in Neutral as well as the remote lever. Then reinstall that coupling- Got my parts from that place in Denver.

Slow on the reply but I don’t see a nut on there just this

 

[wmgeorge]

Slow on the reply but I don’t see a nut on there just this

So was that a clip that needed to be removed? Yeah its been two weeks since the first post.

 

[99yam40]

simple to look at and see a male and female splined system at that joint.

if that connection is rusted together, it might keep the lower unit from dropping, just like the drive shaft rusting into the crank

 

[wmgeorge]

simple to look at and see a male and female splined system at that joint.

if that connection is rusted together, it might keep the lower unit from dropping, just like the drive shaft rusting into the crank

Looks like the one part is brass, is there a clip holding it? How would you take it apart? I have enlarged the JPG and see no splines.

 

[wmgeorge]

Looks like the one part is brass, is there a clip holding it? How would you take it apart? I have enlarged the JPG and see no splines.

Here is what I see....

 

[wmgeorge]

The OP needs to check in for updates more often.

 

[99yam40]

look that the parts breakdown, you will see the clip is down inside the lower unit keeping that shaft from coming out of the lower unit.
the 2 shafts are splined at the joint you have in the pic.
the reason you cannot see the splines is they are inside that joint