BMW R51 R61 R66 R71 Owners Maintenance Manual German 1938
At a Glance
The BMW R51 R61 R66 R71 Owners Maintenance Manual (German, 1938) is a handy reference for owners and enthusiasts looking after these classic BMW motorcycles. Written in German, a period owner's manual like this usually covers basic operation, routine inspections, lubrication, and the adjustments needed to keep the bike running. It can also give you useful context for understanding the original controls and maintenance practices, so you can approach a 1938 motorcycle on its own terms instead of relying only on modern workshop habits.
If you're planning maintenance or researching a restoration, the usual topics include engine care, fuel delivery, ignition checks, clutch adjustment, brakes, tires, and electrical equipment. Troubleshooting guidance may help you track down running problems, but any specifications, tightening instructions, or component references should be checked against the exact model before you start work. Torque values and part numbers may need a separate workshop reference or parts catalog if they aren't included in the owner's manual. The PDF is available for download.