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.

You can find all spare parts for your BMW elderly model since 1969 here.


  BMW R45 78-80 & 81-85,
R50/5 69-73            
BMW R60/5 69-73,
R60/6 73-76,
R60/7 76-80            
BMW R65 78-80,
R65 Einarmschw. 85-93,
R65 L/S 81-84,
R65 G/S 87-92
Technical Specifications:              
Capacity: 473 ccm (R45),
497 ccm (R50/5)
599 ccm 649 ccm (R65 & L/S),
650 ccm (Einarm. & G/S)
Cylinder: 2 2 2
HP/KW: 27/20 (R45),
32/24 (R50/5)
40/29 (R60/5 & /7),
41/30 (R60/6)
45/33 (R65), 47/35 (Einarm.),
50/37 (L/S), 27/20 (G/S)
Weight (kg): 205 (R45),
210 (R50/5)
210 (R60/5 & /6),
215 (R60/7)
205 (R65 & Einarm. & L/S),
198 (G/S)
Seat height (mm): 770 (R45 78-80),
750 (R45 81-85),
810 (R50/5)
810 770 (R65 & Einarm.),
750 (L/S), 860 (G/S)
Valve clearance (in): cold 0,10 mm (R45 78-80),
0,10-0,15 mm (R45 81-85),
0,15 mm (R50/5)
cold 0,15 mm (R60/5 & /6),
0,10 mm (R60/7)
cold 0,10 mm (R65 & Einarm. & G/S),
0,10-0,15 mm (L/S)
Valve clearance (out): cold 0,15 mm (R45 78-80),
0,20-0,25 mm (R45 81-85),
0,20 mm (R50/5)
cold 0,20 mm (R60/5 & /6),
0,15 mm (R60/7)
cold 0,15 mm (R65),
0,20 mm (Einarm. & G/S),
0,20-0,25 mm (L/S)
Idle speed: 900 ▒ 100 R/MIN (R45 78-80),
700 ▒ 100 R/MIN (R50/5)
700 ▒ 100 R/MIN (R60/5 & /6),
900 ▒ 100 R/MIN (R60/7)
900 ▒ 100 R/MIN (R65),
950 ▒ 150 R/MIN (Einarm. & L/S),
800-1100 R/MIN (G/S)
Injection: 0,5 groove (R45),
1,0-1,5 groove (R50/5)
0,25-1,25 groove (R60/6) 0,5 groove (R65 & L/S),
0,75 groove (Einarm.),
ca. 1 groove (G/S)
Tire pressure (front): 1,9 bar (R45 78-80 & R50/5),
1,9 (2,1) bar (81-85)
1,9 (2,2) bar 1,9 bar (R65),
2,2 (2,4) bar (Einarm.),
1,9 (2,1) bar (L/S & G/S)
Tire pressure (rear): 2,0 bar (R45 78-80 & R50/5),
1,8 (2,2) bar (81-85)
1,8 (2,3) bar 2,0 bar (R65),
2,5 (2,9) bar (Einarm.), 1,8 (2,2) bar (L/S & G/S)
Spark plug 1: NGK BP7ES NGK BP7ES NGK BP7ES (R65 & Einarm. & L/S),
NGK BP6ES (G/S)
Spark plug 2: NGK BP6ES (R45),
NGK BPR7EIX (R50/5)
NGK BPR7EIX NGK BPR7EIX (R65 & Einarm. & L/S),
NGK BP7ES (G/S)
Standpipe ě: 36 mm fork 36 mm fork 36 mm fork
Drive: Kardan Kardan Kardan
       
Capacities:      
Fork oil per rod: 190 ml SAE 10W (R45),
250 ml SAE 5W/10W (R50/5)
250 ml SAE 5W/10W 190 ml SAE 10W (R65),
300 ml SAE 5W/10W (Einarm.),
190 ml SAE 5W/10W (L/S),
230 ml (G/S)
Engine oil without filter: 2,0 L SAE 20W-50 2,0 L SAE 20W-50 (R60/5),
2,5 L with oil cooler (R60/6 & /7)
2,0 L SAE 20W-50 (R65),
2,25 L SAE 20W-50 (Einarm.),
2,25 L 20W-50 (L/S),
2,0 L SAE 20W-50 (G/S)
Engine oil with filter: 2,25 L min. API SE 2,25 L SAE 20W-50 2,25 L min.API SE (R65),
2,5 L (Einarm. & L/S),
2,25 L (G/S)
Transmission oil: 800 ml 80/90W GL-5 (R45 78-80),
800 ml SAE 90 GL-5 (R45 81-85 & R50/5)
800 ml SAE 90 GL-5 800 ml SAE 90 GL-5
Brake fluid: DOT 4 (R45),
mech. drum brake (R50/5)
mech. drum brake (R60/5),
DOT 4 (R60/6 & /7)
DOT 4
Final drive oil: 250 ml 80/90W GL-5 (R45 78-80),
350 ml SAE 90 GL-5 (R45 81-85),
250 ml SAE 90 GL-5 (R50/5)
250 ml SAE 90 GL-5 250 ml SAE 90 GL-5 (R65),
350 ML SAE 90 GL-5 (Einarm. & L/S & G/S)
Fuel: 22,0 L 22,0 L bzw. 17,5 L ab 1971 (R60/5),
18 L (R60/6),
24,0 L (R60/7)
22,0 L (R65 & Einarm. & L/S),
19,5 L (G/S)
Coolant: air-cooled air-cooled (R60/5, R60/6),
air-/ oil-cooled (R60/7)
air-cooled





  BMW K75RT/Ultima 89-96,
K75S 86-96,
K75C 85-88, R75/5 69-73,
R75/6 73-76, R75/7 76-79
BMW K1 89-93, K100 83-90,
K100LT 86-91,
K100RS 89-92,
K100RS/RT 83-89
BMW R90S 73-76,
R90/6 73-76
Technical Specifications:              
Capacity: 740 ccm (K), 745 ccm (R) 987 ccm 898 ccm (R90S),
900 ccm (R90/6)
Cylinder: 3 (K), 2 (R) 4 2
HP/KW: 75/55 (K), 50/37 (R) 100/74 (K1, K100RS),
90/66 (rest)
67/49 (R90S),
60/44 (R90/6)
Weight (kg): 226 (K75RT/Ultima),
235 (K75S), 228 (K75C),
210 (R75/5),
215 (R75/6 & /7)
280(K1), 239 (K100),
283 (K100LT),
253 (K100RS), 260 (K100RS/RT)
220 (R90S), 215 (R90/6)
Seat height (mm): 760 (K75RT/Ultima),
810 (rest)
780 (K1), 810 (Rest) 810
Valve clearance (in): cold 0,15-0,20 mm (K),
0,15 mm (R75/5 & /6),
0,10 mm (R75/7)
cold 0,15-0,20 mm cold 0,15 mm
Valve clearance (out): cold 0,12-0,30 mm (K),
0,20 mm (R)
cold 0,25-0,30 mm cold 0,20 mm
Idle speed: 900-1000 R/MIN (K),
700 ▒ 100 R/MIN (R75/5 & /6),
900 ▒ 100 R/MIN (R75/7)
950 ▒ 50 R/MIN 700 ▒ 100 R/MIN
Injection: Injection 34 mm (K),
1,0-1,5 groove (R75/5)
Injection  
Tire pressure (front): 2,2 (2,5) bar (K75RT/Ultima, K75S),
2,0 (2,3) bar (K75C),
1,9 bar (R75/5 & /7),
1,9 (2,0) bar (R75/6)
2,2 (2,5) bar (K1, K100, K100RS),
2,2 bar (K100LT),
2,2 (2,7) bar (K100RS/RT)
1,9 (2,2) bar
Tire pressure (rear): 2,5 (2,9) bar (K),
2,0 bar (R75/5 & 7/),
2,0 (2,25) bar (R75/6)
2,5 (2,9) bar (K1,K100RS, K100RS/RT),
2,5 (2,8) bar (K100),
2,5 bar (K100LT)
1,8 (2,3) bar
Spark plug 1: NGK D7EA (K),
NGK BP6ES (R)
NGK DR7EA (K1),
NGK D7EA (Rest)
NGK BP7ES (R90S),
NGK BP6ES (R90/6)
Spark plug 2: - (K), NGK BPR6EIX (R) - NGK BPR7EIX (R90S),
NGK BPR6EIX (R90/6)
Standpipe ě: 41,4 mm (K),
36 mm (R) fork
41,4 mm (K100LT), 41,1 mm (K100),
41 mm (rest) fork
36 mm fork
Drive: Kardan Kardan Kardan
       
Capacities:      
Fork oil per rod: 330 ml SAE 5W (K),
250 ml SAE 5W/10W (R)
R: 440ml / L: 350ml 5W (K1),
330 ml SAE 5W (K100),
360 ml SAE 5W/10W (K100LT),
400 ml SAE 5W (K100RS),
330 ml SAE 5W/10W (K100RS/RT)
250 ml SAE 5W/10W
Engine oil without filter: 3,5 L SAE 20W-50 (K),
2,0 L SAE 20W-50 (R75/5 & /6),
2,25 L SAE 20W-50 (R75/7)
3,5 L SAE 20W-50 2,5 L with oil cooler
Engine oil with filter: 3,75 L (K),
2,25 L (R75/5 & /6),
2,5 L (R75/7)
3,75 L API SE/SF (K1, K100RS),
3,75 L min. API SF (K100, LT, RS/RT)
2,25 L SAE 20W-50
Transmission oil: 850 ml SAE 90 GL-5 (K),
800 ml SAE 90 GL-5 (R)
850 ml SAE 90 GL-5 800 ml SAE 90 GL-5
Brake fluid: mech. drum brake (R75/5),
DOT 4 (rest)
DOT 4 DOT 4
Final drive oil: 260 ml SAE 90 GL-5 (K),
250 ml SAE 90 GL-5 (R)
260 ml SAE 90 GL-5 250 ml SAE 90 GL-5
Fuel: 21,0 L (K),
24,0 L / 17,0 L ab '71 (R75/5),
18,0 L (R75/6),
24,0 L (R75/7)
22,0 L 24,0 L (R90S),
18,0 L (R90/6)
Coolant: 2,8 L (K), air-cooeld (R) 3,8 L (K1), 3,2 L (rest) air-cooled




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

Change oil when engine at regular operating temperature, renew oil filter element
Checking clutch play
Checking front and rear brake fluid level
Check operation of brake system and freedom from leaks
Renew brake fluid at least once a year
Checking rear wheel screws
Check/adjust valve clearance
Checking battery acid level
Clean and grease the battery posts
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks (R-models)
Check spark plug electrode gaps (R-models)
Take up slack at bolts and nuts: engine mounts, suspension strut mounts, centre stand (R-models)
Take up slack at cylinder head nuts (R-models)
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 (R)
Oil change: control gear, rear wheel drive, telescopic fork; clean inductive sensor at rear wheel drive (K-models)
Check freedom from leaks of hose connections in the fuel and coolant system; tightening hose clamps if necessary (K-models)
Checking coolant level and concentration (K-models)
[ABS] Checking sensor gaps for ABS, rear and front (K-models)
Checking operation of electric side-stand switch (K-models)
Checking fast-idle (choke) cable and throttle cable (K-models)
Take up slack at bolts and nuts: drive unit at the frame, suspension strut fastening, centre and side stand (bearing block), rear wheel screws (K-models)
Sprinkling guide linkage of adjustable windscreen with silicone (K100LT / K75RT)
Checking condition of tires & wheels, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, ABS, steering, instruments, engine idle speed, CO value (K-models)

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
Checking front and rear brake fluid level
Renew brake fluid at least once a year
Checking battery acid level
Clean and grease the battery posts
Check/adjust valve clearance
Oil inspection: gearbox, rear wheel drive, rear swinging fork (not Paralever) (R-models)
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks (R-models)
Check spark plug electrode gaps (R-models)
Grease clutch cable nipple at top and bottom and side stand pivot (R-models)
Synchronise the carburettors, and adjust the wire cables (R-models)
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 (R)
Oil change: control gear, rear wheel drive, telescopic fork; clean inductive sensor at rear wheel drive (K-models)
Grease clutch cable nipple at top and bottom and side and centre stand pivot (K-models)
Checking coolant level and concentration (K-models)
Examine brake pads and discs for wear (K-models with ABS)
[ABS] Checking sensor gaps for ABS, rear and front (K-models)
[ABS] Checking sensor and impulse giving rundle for blockage with dirt (K-models)
Checking operation of electric side-stand switch (K-models)
[MOTRONIC] Read fault memory (K-Modelle)
Sprinkling guide linkage of adjustable windscreen with silicone (K100LT / K75RT)
Checking condition of tires & wheels, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, ABS, steering, instruments, engine idle speed, CO value (K-models)

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

Change oil when engine at regular operating temperature, renew oil filter element
Replacing spark plugs
Replacing intake air filter
Checking clutch play
Checking front and rear brake fluid level
Check operation of brake system and freedom from leaks
Examine brake pads and discs for wear
Renew brake fluid at least once a year
Check/adjust valve clearance
Check play at steering bearings
Checking battery acid level
Cleaning and greasing battery terminals
Oil change: gearbox, rear wheel drive, rear swinging fork (not Paralever), telescopic forks (R-models)
Check spark plug electrode gaps (R-models)
Clean carburettor float chambers (R-models)
Grease clutch cable nipple at top and bottom and side stand pivot (R-models)
Check free travel of rear brake (R-models)
Take up slack at bolts and nuts: engine mounts, suspension strut mounts, centre stand (R-models)
Check swinging arm bearing play at frame and pivot point (Paralever) (R-models)
Check endplay at valve rockers (R-models)
Synchronise the carburettors, and adjust the wire cables (R-models)
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 (R)
Oil change: control gear, rear wheel drive, telescopic fork; clean inductive sensor at rear wheel drive (K-models)
Grease clutch cable nipple at top and bottom and side and centre stand pivot (K-models)
Check freedom from leaks of hose connections in the fuel and coolant system; tightening hose clamps if necessary (K-models)
Replace the fuel filter (K-models)
Checking coolant level and concentration (K-models)
Check operation and freedom from leaks of brake calipers (K-models)
[ABS] Checking sensor gaps for ABS, rear and front (K-models)
[ABS] Checking sensor and impulse giving rundle for blockage with dirt (K-models)
Checking fast-idle (choke) cable and throttle cable (K-models)
Checking operation of electric side-stand switch (K-models)
[MOTRONIC] Read fault memory (K-Modelle)
Renew coating of chain tension rail (every 60.000 km, K-models)
Take up slack at bolts and nuts: drive unit at the frame, suspension strut fastening, centre and side stand (bearing block), rear wheel screws (K-models)
Sprinkling guide linkage of adjustable windscreen with silicone (K100LT / K75RT)
Checking condition of tires & wheels, tire pressures, lights & signal systems, telltale & warning lights, clutch & gear shift, handbrake & footbrake, ABS, steering, instruments, engine idle speed, CO value (K-models)