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Author Topic: New K75S Rider in Pennsylvania USA  (Read 9661 times)

Offline maelwys

  • Motobrick Curious
  • Posts: 12
New K75S Rider in Pennsylvania USA
« on: September 06, 2014, 08:43:11 PM »
I'm a brand new rider (just got my license a month ago) and for my first bike picked up a 1990 K75S that was well cared for by a tried and true BMW guy that I know, sold to someone else who rarely rode it, and finally bought by myself. It has a good number of miles on it (50K) but runs well and the price was right.



Hard saddle bags and top case included but removed for cleaning, and it also came with a few tank bags and various and sundry other bits. Bottom fairing piece is damaged so I'm not sure if I can put it back on. The first owner added some flashing LEDs to the brake light but they trigger the error light on the instrument panel, so I'm thinking about replacing them with something more friendly to the electronics. I also am considering a different windscreen (AeroFlow perhaps?) as the stock one is cracked and the buffeting can be pretty intense on the highway (I'm 6'). Any other ideas for tweaks are welcome - I'm not 100% sure what I want yet as I'm brand new to the hobby, so I don't want to sink a lot of money into if if I can help it, but I do like to tinker on small projects.



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  • Pennsylvania, USA
  • 1990 K75s; 2012 1200gs

Offline johnny

  • TrailBrakingThrottleWhacker
  • ^ Quintessential Motobricker
  • Posts: 7653
  • Whacking...n...Chopping Sliding...n...High Siding
Re: New K75S Rider in Pennsylvania USA
« Reply #1 on: September 06, 2014, 08:48:38 PM »
greetings maelwys...

replace all the fluids... all of them... fork brake radiator engine gear box final drive... lube the splines... put it on a battery tender junior when its gonna sit for a few days... ride it another 50 thou worry free... welcome to motobrick.com... thanks for the photo... now go getts you some yeeeeehaaaa...

j o
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  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline mystic red

  • Retired Professsional Driver
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  • Posts: 2922
Re: New K75S Rider in Pennsylvania USA
« Reply #2 on: September 07, 2014, 05:38:36 AM »
+1...what johnny said. BTW 50K is nothin'. :riding:
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Offline The Mighty Gryphon

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  • Posts: 6857
Re: New K75S Rider in Pennsylvania USA
« Reply #3 on: September 07, 2014, 08:30:52 AM »
Welcome!  +1 on the fluids.  Running through the BMW maintenance items on the bike will keep you busy for a couple weeks and give you a good introduction to the intricacies of the brick.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline maelwys

  • Motobrick Curious
  • Posts: 12
Re: New K75S Rider in Pennsylvania USA
« Reply #4 on: September 16, 2014, 07:19:10 PM »
Just wanted to follow up on this. Been a bit too busy to get going on all the maintenance items, but I've been reading up on the maintenance post here, and parts are on their way to replace fluids and filters. One thing I noticed while giving it a clean is a very slight oil seep around the sight glass. Going to see what that's all about and replace if necessary. More to come....
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  • Pennsylvania, USA
  • 1990 K75s; 2012 1200gs

Offline johnny

  • TrailBrakingThrottleWhacker
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  • Posts: 7653
  • Whacking...n...Chopping Sliding...n...High Siding
Re: New K75S Rider in Pennsylvania USA
« Reply #5 on: September 16, 2014, 09:23:29 PM »
greetings maelwys...

i would make sure the sight glass is good... its one component thats easy to replace and will ruin your day if it pops out...

j o
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  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline Chaos

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  • Mars needs women!
Re: New K75S Rider in Pennsylvania USA
« Reply #6 on: September 17, 2014, 12:25:12 AM »
Very happy with my Aeroflow, I lucked out and found it on Ebay cheap.  Aside for maintenance and wear items, not a whole lot to tweak on these.  I have barbacks, (big plus on comfort for me) a MAC slip on (hate the stock pipe, both looks and sound) and a funny paint job. 
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline maelwys

  • Motobrick Curious
  • Posts: 12
Re: New K75S Rider in Pennsylvania USA
« Reply #7 on: September 26, 2014, 06:59:43 PM »
Been getting some work done on the bike lately. Made myself a handy service spreadsheet. Replaced the fuel filter and changed oil. Changed out the sight glass too which cleared up my slight oil seeping issue there. Old sight glass popped out with barely any pressure when I tapped on it from behind, so I'm guessing I was getting close to losing it. Latest project was to change the air filter:



Do mouse nests come standard on these old BMWs?

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  • Pennsylvania, USA
  • 1990 K75s; 2012 1200gs

Offline Glacial

  • ^ Proficient Motobricker
  • Posts: 158
Re: New K75S Rider in Pennsylvania USA
« Reply #8 on: September 27, 2014, 02:16:21 PM »
Have you got a licence for disturbing that well-developed ecological niche?  :nono
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  • Cambridge, UK
  • 1990 K75S VIN 0109678
'If this is your mid-life crisis, you are going to live to be 114'

Offline maelwys

  • Motobrick Curious
  • Posts: 12
Re: New K75S Rider in Pennsylvania USA
« Reply #9 on: May 14, 2015, 01:56:19 AM »
Adding to my thread here to update my latest K75 adventures. After storing the bike for the winter, I pulled it out today, fired it right up, and then tore the back end off to lube the transmission and drive shaft splines, and clean everything as I went. Took about 6 hours with a friend who has far more mechanic experience than I to get everything done. He raved the entire time about how modular everything was on the bike.

Hopefully this will fix the issue I've been having with downshifting at low speed - the transmission splines were quite dry. The drive shaft splines looked great though, so I imagine that service was done relatively recently. Some more to button up tomorrow and then it's time for a ride.
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  • Pennsylvania, USA
  • 1990 K75s; 2012 1200gs

Offline The Mighty Gryphon

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Re: New K75S Rider in Pennsylvania USA
« Reply #10 on: May 14, 2015, 08:50:14 AM »
Doing those transmission/clutch splines will make your brick shift like a rice burner.  In a nice way, especially from 2nd to 1st. 
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline maelwys

  • Motobrick Curious
  • Posts: 12
Re: New K75S Rider in Pennsylvania USA
« Reply #11 on: May 21, 2015, 04:46:54 PM »
Took the bike out today and had no trouble downshifting. Everything works just like it should. At least, until I got about a block from home and had a wee issue:



Note to all: when reassembling the back of the bike, remember to tighten those brake bolts boys and girls. Time to look up some part numbers.

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  • Pennsylvania, USA
  • 1990 K75s; 2012 1200gs
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