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 R80G/S, BMW R80ST, BMW R80, BMW R80RT, BMW R80GS and BMW R80R


Technical data

Model BMW R80G/S (80-87)
Volume (ccm) 797
Cylinders 2
Power (HP) 50
Power (KW) 37
Weight (kg) 196
Seat height (mm) 860
Idle speed (R/Min) 900 ┬▒ 100
Injection 0,75 grooves
Tyre pressure front (bar) 2,2
Tyre pressure rear (bar) 2,3 (2,5)
Spark plug 1 NGK BP6ES
Spark Plug 1 NGK BPR6EIX
Standpipe 36 mm telescopic fork
Drive Cardan
Fork oil per rod 230 ML SAE 5W/10W
Engine Oil Without Filter 2,0 L SAE 20W-50
Engine Oil With Filter 2,25 L MIN. API SE
Gearbox Oil 800 ML SAE 90 GL-5
Break Fluid DOT 4
Final Drive Oil 350 ML SAE 90 GL-5
Fuel tank volume 19.5
Coolant air-cooled


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

Change oil when engine at regular operating temperature, renew oil filter element
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks
Check spark plug electrode gaps
Check clutch operating clearance
Check brake fluid level at front and rear
Check operation of brake system and freedom from leaks
Renew brake fluid at least once a year
Take up slack at bolts and nuts: engine mounts, suspension strut mounts, centre stand
Check slack at rear wheel studs
Take up slack at cylinder head nuts
Check/adjust valve clearances
Check battery acid level
Clean and grease the battery posts
Synchronise the carburettors, and adjust the wire cables
Checking condition of tires & wheels, rims & spokes, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, steering, instruments, engine idle speed, engine undertray for blockage with dirt

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

Change oil when engine at regular operating temperature, renew oil filter element
Oil inspection: gearbox, rear wheel drive, rear swinging fork (not Paralever)
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks
Check spark plug electrode gaps
Clean carburettor float chambers
Grease clutch cable nipple at top and bottom and side stand pivot
Check brake fluid level at front and rear
Renew brake fluid at least once a year
Check/adjust valve clearances
Checking battery acid level
Clean and grease the battery posts
Synchronise the carburettors, and adjust the wire cables
Checking condition of tires & wheels, rims & spokes, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, steering, instruments, engine idle speed, engine undertray for blockage with dirt

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

Change oil when engine at regular operating temperature, renew oil filter element
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks
Renew spark plugs
Check spark plug electrode gaps
Renew intake air cleaner element
Clean carburettor float chambers
Check clutch operating clearance
Grease clutch cable nipple at top and bottom and side stand pivot
Check brake fluid level at front and rear
Check operation of brake system and freedom from leaks
Examine brake pads and discs for wear
Check free travel of rear brake
Renew brake fluid at least once a year
Take up slack at bolts and nuts: engine mounts, suspension strut mounts, centre stand
Check swinging arm bearing play at frame and pivot point (Paralever)
Check endplay at valve rockers
Check/adjust valve clearances
Check play at steering bearings
Check battery acid level
Clean and grease the battery posts
Synchronise the carburettors, and adjust the wire cables
Checking condition of tires & wheels, rims & spokes, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, steering, instruments, engine idle speed, engine undertray for blockage with dirt