new-centrifugal-advance-173-056m-1272

u Service-Information6 \ Tech.Cust. Service Munich, Dec ’72 VS-201 na/zr/fm Motorcycles R50/5 – R75/5 Group: Engine 1 o- 1/73 (056 M) e Ref: New automatic centrifugal advance Dear Sirs, With the installation of a new automatic centrifugal advance unit on the models R 50/5 as of Chassis No. 2 905 857 R 60/5 as of Chassis No. 2 946 096 R 75/5 as of Chassis No. 2 996 220 the tendency to “knocking 11 of the engines has been reduced so that even fewer problems will be encountered in countries with a lowquality fuel. The centrifugal advance curve rises flatter than that of the prev- ( ious version; only at an engine speed of approximately 3,200 rpm (previously 2,200 rpm) is the aut~rnatic advance fully operative. The BMW Part No. 12 11 1 353 639 remains unaltered, the Bosch numbers read as follows: Automatic Advance Unit Automatic Advance Unit with Contact-Breaker Plate, cornpl. fully suppressed Previous 0232 002 907 0232 002 008 Present 0232 002 010 0232 002 011 By exchanging both Tension Springs 12 11 1 356 142 for the new Springs 12 11 l 356 546, the previous ignition advance units can be modified to the latest standard. Yours faithfully, BAYERISCHEM OTORENW ER Aktiengesellschaft ppa. • • ~ ~leske Kenntnis genommen – Pris connaissance – Noted -Tornado nota – Presa conoscenza Ablage – Archives – File -Archive