Category: Service Bulletin

Service-Informatio~n ~————~—————-~——-,’ ‘-. – ( Tech.Gust.Service VS-201 lo/LP/fm BMW Motorcycles R60/6 – R90S Munich, Nov ’73 Group 11: Engine 7 /73 (090 ,,l) e Ref: Carburetor Dear Sirs, It has been necessary to change several technical specifications relating to the carburetors shortly before production of the new motorcycles. These changes could not be incluaed in

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0 0 () ~————-r—————,r——-\ (-\ Tech.Cust.Service vs-201 ga/LP/tm Motorcycles R50/5 – 75/5 Group ll: Engine Munich, July ’73 4/73 (082M) e Re£: Automatic centrifugal advance Dear Sirs, It has repeatedly occurred that the M6 nut securing the centrifugal advance unit is torn ott as a result of over-tightening. Since it is not immediately apparent that

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u ( Tech.Cust.Service vs-201 ga/LP/fm Motorcycles R50/5, 60/5, 75/5 Group 11: Engine Munich, June ’73 No. 1/73 (073M) e Ref: Engine with lower compression – BMW R50/5 – R75/5 Dear Sirs, To prevent the occurrence of “pinking” in countries with low octane fuel, our motorcycle models /5 are now available (since January ’73) with engines

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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

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( ·service-InformatioGn Tech.Cust.Service VS 201 LP/sta/fm Motorcycles R50/5, R60/5 R75/5 Group: Engine Ref: Rocker arm bearing supports Dear Sirs, Munich, Nov 72 5/72(043 M) e To suppressnoise which can occur if there is too much play on the rocker arm, slotted rocker arm bearing supports (Order No. 11 12 l 250.?37) used in conjunction with

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Tech.Customer Service VS 201 gi/Zr/fm Motorcycle R50/5, R60/5, R75/5 . \ Munich, Nov 72 4/72 (041 M)e Group: Engine Ref: Automatic ignition timing mechanism (centrifugal advance) Dear Sirs, In order to obtain for all three motorcycle models optimal performance points in the ignition advance, we have installed a new automatic ignition mechanism as follows: R

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I Service-Informati$o n (‘ ,.,,,,.,.,._.,-rr,;–…=-~e”r”v–1r.c.:e;;–==o:;;r”‘c”‘y”cc,-;e”s.-,=-“f”T,,-cr7’7,=——-,M”M=:::n:::a:c-:1;:rr:-::c::c:-c.h::.h:-:,- —.;gi/mi R 5/5 3 72 (006 m)e G oup: engine – crankshaft Ref: Crankshaft Dear Sirs, In order to reduce the possibility of damage to the drive when the engine is greatly overloaded the fatigue strength of the crankshaft under repeated bending stress has been increased at the following models

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I~. .. I ~ Service-Information$ \.✓ Tech. Cust. Service VS-201 gi/mi Motorcycles R50/5,R60/5,R75/ Munich, March 7 2/72 (005 M) e l r. r . I Group: engine En ine oil r · Rer: Engine oil recommendations Dear Sirs, A renewed revision of the engine oil recommendations leads to the following results: ·.oil changien tarval Throughotuhta

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( Service-Informati&on VS-201 ervice fm/na o orcycle R 75/5 Group: engine Constant Pressure Carb Munich, March 7 1/72 (003 M) e Ref: Constant-Pressure Carburettors 64/32/3 and 64/32/4 Dear Sirs, The improved idling performance of motorcycles equipped with carburettors 64/32/9 and /10 (as described in the Service Information bulletin 5/71 can also be obtained in the

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Service-Information& Group: 11 September Bulletin No.: Engine 1981 11 020 81 (2039) – For U.S.A. and Canada Only – Subject: Maintenance of Emission Control Systems – 1982 Models Applicable emission standards for the 1982 motorcycles amount to 5 g/km HC and 12 g/km CO. No maintenance is required for the pulse air system, which ensures

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