Seat will not Laitch on K75S and an odometer issue

[KJM00]

Hey guys,


Proud new owner of a K75S, (1993).  But I got two immediate tasks at hand that I was just looking to see if you guys might be able to offer some insight.  1) The odometer freshly broke,  I ordered some new cogs off the odometer site, and saw a pdf on how to fix it.  So I think I got that one narrowed down, any tips on replacing the Odometer cogs?  ((Definitely probably gonna have to remove the fairing?)) (([Seems to be a common problem with these bikes I freshly remember reading a guy saying, "It really seems like these cogs are made out of compressed applesauce]))  And Secondarily my seat will not latch, I suspect i may have...broken the latch that catches the seat when attempting to close the seat... Anyone know where i can buy just the latch that grabs the seat to lock it in place?  I suspect it wouldn't make a difference, but it is a corbin aftermarket seat.

[Laitch]

Anyone know where i can buy just the latch that grabs the seat to lock it in place?

First go here. Then go to the Seat section then the Mounting Parts for Bench Seat part section and finally, the parts list.

[KJM00]

Thanks for the quick reply!  Much love.

[The Mighty Gryphon]

I am guessing the latch is stuck.  I had that problem with one of mine.   Have you looked into the socket the post on the seat goes into?  Can you see the latch moving when you press the lock?  Can you move the latch with a screwdriver?  If the answer is no, put a few drops of oil in there and work the latch around. 

With the latch working properly you may have to adjust the post on the bottom of the seat to engage it properly.   Alignment and length are important to letting the post lock into the latch and then release when the lock is pressed. 

Disclaimer:  I am flying blind with these suggestions without any photos to show what you have and what may or may not be broken, missing or out of whack.

[KJM00]

It's quite difficult to get a good picture of it.  But I sprayed WD-40 in there and wiggled things around, and used a thin alanwrench to try to pry what looked like the rest of the mechanism and had my old man also take an eye at it, theres no obvious broken catch mechanism, but i gotta imagine thats what it is.  Here's a few crappy pictures that i tried to take with a phone.  But yes i do see the latch moving when i engage the button, but there's not much there. I also have wiggled around with the catch on the seat, along with trying to move the latch, but the latch or whats left of it, certainly does move with the button being pressed.

[Martin]

Don't lubricate the odometer gears some lubricants will turn the gears into apple sauce even faster.
Regards Martin.

[KJM00]

The lubrication was in reference to the lock, i havent started the odometer yet, ordered the gears and awaiting those.

[The Mighty Gryphon]

Is this the part you think you broke?


#9   51 25 1 453 653   DUAL SEAT LOCK   $90.75

[KJM00]

I suspect it's what Laitch said:

The Actual Mechanism the "catches" the open hole in the seat bar that inserts into the locking mechanism.



Can't be 100% sure, but it seems like it, cos' it acts like it wont even come close to engaging the loop on the seat that goes into the lock mechanism

[The Mighty Gryphon]

Remove the bar with the loop from the seat.  See if you can make it engage properly by just sticking it in the lock.   

On my seats, there seems to be a right side and a wrong side for the best operation.  See if the orientation makes a difference, then put it all back together and adjust the bar so it will engage the latch.

[KJM00]

I did just earlier remove the bar from the corbin seat, and no matter how i fiddled with it, it would not engage at all, off the seat or on the seat.

[The Mighty Gryphon]

See reply #7.  $90.75 

I would just live with the loose seat.  It ain't gonna flip up while you're sitting on it.

[KJM00]

I'm not against living with a loose seat, even though i'd prefer not to.  But i really do think it's just the latch, because everything mechanically moves, it just appears like the catch mechanism is moving and not grasping anything, be it that it's got some teeth missing or whatever, but I feel that the catch/grab part of the mechanism is the only thing busted.

[The Mighty Gryphon]

Before I send $91 to BMW.

http://www.k100-forum.com/t4741-dismantling-the-seat-lock#50959

[KJM00]

Good find, Thanks!

[Chaos]

I would just live with the loose seat.  It ain't gonna flip up while you're sitting on it.

Not that I recommend it, but I've been doing that for the last couple decades.  It's actually convenient not having to mess with the latch.

[mw074]

 Having a functioning seat lock affords you lockable storage in the tail section and under the seat.

[johnny]

greetings...

i keep my seat locked cause i keep a spare key under the seat in case i lose my primary key i gotts spare...

j o

[The Mighty Gryphon]

greetings...

i keep my seat locked cause i keep a spare key under the seat in case i lose my primary key i gotts spare...

j o

It's still early for me, so mind not fully engaged, but how do you unlock the seat to get to your spare key?

[Chaos]

It's still early for me, so mind not fully engaged, but how do you unlock the seat to get to your spare key?

Easy, break the seat lock!

[Chaos]

greetings...

i keep my seat locked cause i keep a spare key under the seat in case i lose my primary key i gotts spare...

j o

I keeps my spare key in my footpeg rubber, then I rotated it upside down so I remember where I put it

[The Mighty Gryphon]

I have mine in a small bag wrapped in gray foam and stuck in the battery mount behind the side cover.  I have to remind myself from time to time that it's there.

Would probably be a better idea for me to just keep a spare key stuck in the seat lock.  Maybe put a bright green streamer on it so I don't forget it's there.

[Martin]

Non OEM flat key stored in my wallet, and another one hidden on the bike.
Regards Martin.

[billday]

I keep my spare key at home so I know where it is at all times.

[Filmcamera]

I don't have a spare key... (note to self - get one!)