Important information
Regular maintenance is a must for a reliable and good motorcycle. Under normal driving conditions you can do the service a few hundred km sooner or later.
Subsequent you will find technical data as well as maintenance and service information.
We make no claim to completeness or accuracy of all data, these are only for your information.

Spares for BMW R850GS, BMW R1100GS, BMW R1150GS and BMW R1150GS Adventure


Technical data

Model BMW R850GS 1998-2001
Volume (ccm) 848
Cylinders 2
Power (HP) 34
Power (KW) 25
Weight (kg) 262
Seat height (mm) 840
Idle speed (R/Min) 1000 ┬▒ 150
Injection Injection
Tyre pressure front (bar) 2,2 (2,5)
Tyre pressure rear (bar) 2,5 (2,9)
Spark plug 1 NGK BKR7EKC
Spark Plug 1 NGK BKR7EIX
Standpipe 35 mm Telelever
Drive Cardan
Fork oil per rod SAE 10W
Engine Oil Without Filter 3,5 L SAE 15W-50
Engine Oil With Filter 3,75 L min. API SJ
Gearbox Oil 800 ml SAE 90 GL-5
Break Fluid DOT 4
Final Drive Oil 230 ml SAE 90 GL-5
Fuel tank volume 25
Coolant air-/oil-cooled


Running-in Check / 600 miles (1.000 km) service:

Reading fault memory with BMW Motorrad diagnostic system (R1150GS & Adventure)
Change oil when engine at regular operating temperature, renew oil filter
Changing oil in gearbox, warmed to normal operating temperature
Oil change, rear wheel drive
Tightening cylinder head
Adjusting valve clearance
Checking freedom of movement of throttle cable and checking for kinks and chafing
Checking clutch play
Tightening hose clamp at intake manifold
Checking front and rear brake fluid level
Checking swinging arm bearing
Checking operation of side-stand switch
Checking security of rear wheel screws
Checking security of screws for adjustable handlebars
Checking idle speed
Checking/adjusting synchronisation
Checking throttle valves
Checking spoke tension
Checking tire pressures and tread depth
Checking lights and signalling equipment
Test ride as final inspection and function check
Confirming BMW Service in on-board documentation
Tension Poly-V belt (R1100GS)
Lubricating side-stand pivot mounts (R1150GS & Adventure)

6.000 miles (10.000 km) service (30.000 km / 50.000 km):

Reading fault memory with BMW Motorrad diagnostic system (R1150GS & Adv.)
Change oil when engine at regular operating temperature, renew oil filter
Changing oil in gearbox, warmed to normal operating temperature
Oil change, rear wheel drive
Adjusting valve clearance
Checking condition of spark plugs
Checking battery acid level
Cleaning and greasing battery terminals
Checking freedom of movement of throttle cable and checking for kinks and chafing
Checking clutch play
Checking front and rear brake pads for wear
Checking front and rear brake discs for wear
Checking front and rear brake fluid level
Changing brake fluid, front and rear brakes
Checking swinging arm bearing
Lubricating side stand
Lubricating nipple of clutch cable
Checking operation of side-stand switch
Checking idle speed
Checking/adjusting synchronisation
Checking throttle valves
Checking spoke tension
Checking tire pressures and tread depth
Checking lights and signalling equipment
Tension Poly-V belt
Test ride as final inspection and function check
Confirming BMW Service in on-board documentation
Checking clutch fluid level (R1150GS & Adv.)
Change the clutch fluid (every 4 years, R1150GS & Adv.)
Greasing side stand pivot (R1150GS & Adv.)

12.000 miles (20.000km) service (40.000 km / 60.000 km):

Reading fault memory with BMW Motorrad diagnostic system (R1150GS & Adv.)
Change oil when engine at regular operating temperature, renew oil filter
Changing oil in gearbox, warmed to normal operating temperature
Oil change, rear wheel drive
Adjusting valve clearance
Replacing spark plugs
Replace the fuel filter (every 40.000 km)
Checking front and rear brake pads for wear
Checking front and rear brake discs for wear
Checking front and rear brake fluid level
Visual inspection of the brake pipes, brake hoses and connections
Changing brake fluid, front and rear brakes
Checking wheel bearings
Checking swinging arm bearing
Lubricating side stand
Lubricating nipple of clutch cable
Checking operation of side-stand switch
Checking idle speed
Checking/adjusting synchronisation
Checking throttle valves
Checking spoke tension
Checking tire pressures and tread depth
Checking lights and signalling equipment
Test ride as final inspection and function check
Confirming BMW Service in on-board documentation
Tension Poly-V belt (R1100GS)
Checking clutch fluid level (R1150GS & Adv.)
Change the clutch fluid (every 4 years, R1150GS & Adv.)
Checking rear wheel bearing play by tilting wheel (R1150GS & Adv.)
Greasing side stand pivot (R1150GS & Adv.)