BMW Motorcycle Maintenance & Modifications

The below repairs, replacements & modifications have all been done by me on my own motorcycles. Many of the procedures can apply to other BMW bikes of similar vintage. Do not attempt any of these procedures unless you're confident in your skills - however limited - as a shade-tree mechanic. Please don't send me hate mail if you mess something up!!
Bike Task Details
R850R Cutting a Windshield Difficulty: *
Approx Time: 1 hr
R850R Rear brakes 101 Difficulty: **
Approx Time: less than 1 hr
R1100GS Final drive spline lube Difficulty: ****
Approx Time: 2-3 hrs
R1100GS Replacing the fuel filter, fuel lines
and/or fuel line quick disconnects 		Difficulty: ***
Approx Time: 2 hrs
R850R Coming soon Removing & testing the ignition coil
A note on Difficulty Ratings
* - extremely basic, requires a few simple tools that are probably in your bike's tool kit
Examples: changing oil & other fluids, oil & air filters, bulbs
** - basic, requires some tools not in your bike's kit and a bit of skill
Examples: changing brake pads, adjusting the valve clearance on R bikes, installing a new chain or drive belt, anything with brake fluid
*** - advanced beginner, requires a decent selection of tools, the skills to use them & attention to detail
Examples: changing tires, troubleshooting electrical issues, adjusting the valve clearance on K bikes, working with the ABS system, just about anything that requires removing the tank
**** - intermediate, requires specialized tools and/or plenty of them, high skill levels, attention to minute detail, and possibly the facility or ability to leave projects in progress (work bench, garage, etc.)
Examples: installing a new alternator or starter, spline lube, replacing the shocks
***** - expert, requires a wide variety of specialized tools and an extremely high skill level or access to a professional mechanic
Examples: rebuilding major components such as the engine or transmission, lubing the clutch splines