BMW K75, K100, K1, K1100

Maintenance, Modifications & Manuals


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IMPORTANT DISCLAIMER: I am hosting the information on these pages in hopes that others might find it useful.  It is solely my opinion on things and how to maintain/modify a K bike. I am not a trained motorcycle mechanic nor do I claim to be a "guru" nor expert on these bikes, merely a somewhat experienced "shade-tree mechanic." In fact, the only claim to fame I will ever make with respect to K bikes is that I have probably broken and messed up more things K than anybody else on the planet. As the saying goes, experience teaches us things that we never wanted to learn in the first place. I do not warrant that any of the information here is correct or the "right" way to do things. Therefore, any information you use from these pages is AT YOUR OWN RISK and I assume no responsibility whatsoever for any physical, property, emotional or other damages you may incur from use of the information contained herein.




Maintenance & Mods

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Maintenance & Mods Categories

Maintenance & Operation
Rider (Owner) Manuals
Shop Manuals
Instruments & Controls
Fuel System
Drive Train
Maintenance & Operation
K Bike General Maintenance (PDF)
K Bike Checklist (PDF)
K Bike Motor Oils
Why To Use Radial Tires
General Maintenance Parts #s
BMW Maintenance Schedule for All Ks
Operating Tips for a K75 or K100(2V) (PDF)
Operating Tips for a K100RS4V/K1/K1100 (PDF)
Optimize Riding Comfort (Handlebars and Controls)
K75, K100 & K1100 Luggage - Side Cases
Mount/Remove Side Cases
K75/K100(2V) Torque Specs (PDF)
K100RS4V/K1/K1100 Torque Specs (PDF)
K100 Troubleshooting - from K100 Forum (PDF)   Link to K100 Forum
Jacking Up The Front End Of A K Bike
Remove/Install K75/K100 Front Wheel (JPG)
System/Side/Pannier Case Mounting & Removal
Example K Rehab: 1995 K75 (2021)

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Rider (Owner) Manuals
K75 (Fork oil quantities only valid for 1992 and later K75s. Click here.)
K1 & K100RS4V
Manual Supplement - ABS
BMW AM/FM Cassette Radio Manual

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Shop Manuals
K75 & K100
K1 & K100RS4V

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General Maintenance
Battery Charger & Power Outlets
Aftermarket K Bike Shocks

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Instruments & Controls
VDO Fuel &Temp Gauges
K75/K100: Improve Throttle Return
K75/K100: Enable Choke Indicator
Instrument Cluster
Speedo & Tach Faceplates
Change Odometer Mileage
Replace Trip Odometer
Replace Odometer Gears
Motorcycle GPS for $25
Install Electronic Cruise Control On A K Bike (Revised 2021)
Install CCS-100 Vacuum On A K Bike
Fix A Flaky Speedometer
Aftermarket Heated Grips With OEM Switch (Revised 2021)
Variable Heated Grips
K1100LT Windscreen Switch Rehab
K Bike Dash Switch Rehab
Dash Switch Part Numbers (PDF)
LED Backlit Dash Switches
Replace K Bike Digital LCD Clock
Gear Position Indicator (GPI)
Emulate GPI Switch Start In Neutral
Speedometer Calibration
Fix Bad Cluster Backlighting
Adding Fuel & Temp Gauges
Hazard Flashers
Inexpensive "On Demand" Digital LED Voltmeter
Start/Kill Switch Rehab or Replace

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Bypass Side Stand Switch (K1, K100RS4V, K1100)
Smoky Starts
Replace K75/K100: Air Filter, Mass Airflow Sensor, Fuel Pressure Regulator, Temp Sensor
4V Valve Check/Adjust Notes
DIY Fuel Injector Cover
Mystery Hose
Throttle Body Leaks - Rough Idle
Water/Oil Pump Seal Repair
Engine(water) Temperature Sensor & Cooling System
Adjust Choke Cable

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Fuel System
Ethanol In K Bikes (Up to 10% is OK)
Replace Fuel Filter
Throttle Body Sync
Fuel Injectors
Crank Case Breather Hose (CCB)
Hall Effect Sensor (HES) Diagnosis/Installation
Replace Fuel Level Sender Connector
1985 & Earlier Fuel Level Sender
1986 & Later Fuel Level Sender
K Bike Fuel Pumps
Aftermarket Fuel Pump Parts
Replace Intake Manifolds (Throttle Body Boots)(
Air Accumulator (a.k.a. "The Cup")
K1100 Throttle Bodies On A K75
Adjust CO at Mass Airflow Sensor

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Drive Train

Clutch Spline Lube
Clutch Work w/o BMW Special Tools
4V Drive Shaft Failure
K100RS4V, K1, K1100 Drive Shaft Phasing
Convert Monolever Rear End To Paralever
Adjust K Bike Clutch
Remove Clutch Arm Pivot Rod
Replace/Rebuild Paralever Final Drive Bearings

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LED Turn Signal, Brake & Tail Bulbs (New 2021)
LED H4 Headlight Bulb  - LED & others "Shootout"(New 2021)
Replace/Adjust Headlight Bulb  - RS/RT/LT & K1 (New 2021)
Awesome $6 LED Rear Lighting Enhancement
Fork Mounted LED Aux Lights
Headlight Relays
LED Parking Lights/Turn Signals V2.0
License Plate LEDs
DIY LED Flasher Relay
LEDs w/ OEM Flasher Relay
Bulb Monitor Unit (BMU)
LED Backlit Reflectors
Easy Inexpensive LED Taillight Upgrade
Strobing Brake/Tail Lights
K75/K100 Naked Headlight
Replace A Fuel Or Temp Gauge Bulb

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Wiring Diagrams
K Bike Fuses & Fuse Blocks
Left Combination Switch (New 2022)
Right Combination Switch (New 2022)
Clean K75/K100 Ignition Switch
K100RS4V, K1, K1100 Ignition Switch
Relay Box Layout & Relays
Auxiliary Fuse Block
Radiator Fan
Waterproof Micro Relays
Make Turn Signals Double As Brake Lights
Add A Fuse To The OEM Fuse Block
Wire Gauge
12V Power To Tank Bag
Soldering 101
Powerlet LED Voltmeter

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"De-Mush" Handlebar Mounts
K75 Fork Oil Quantities
K75: Upgrade Springs - Showa Forks

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ABS (Anti-lock Braking System)
Adjust Rear Brake Freeplay
Improve Front Braking - K75/K100
Remove Rear Brake Rotor
Leaky Brake Master Cylinder

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K Bike Paint Color Schemes & Codes
Replace RT/LT Mirror Glass (K100RT,K100LT, K75RT, K1100LT)
Stainless Steel Radiator Grille (New 2022)
DIY Better System Case Hinges
Remove Tail Cowl - Install Tail Rack
Install Front Foot Peg
K75S Fairing (PDF)
K75/K100 Regular to Low Seat Conversion
K75/K100 Low To Regular Seat Conversion
Fitting a "New" Seat/Seat Alignment
Corbin Seats
Simplified Rear Seat Hinge Pin
K1100LT/K75RT Electric Windscreen
RT/LT Fairings
K75 "T" Model
RT/LT Anti-theft Radio Removal & Code
Reynolds Rack
Givi E180 Tail Rack

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How To Trailer A K Bike
Inexpensive Riding Movies (K100RS/K1100RS)
OEM K Bike Tool Kit
"Rekeying" K Bike Locks
My Favorite Multimeter
Interesting/Useful Tools
Digital Media Head Unit w/ Marine Remote (RT/LT Models)
Combination GPS/Camera Mount (K1100LT or 94/95 K75RT)

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