English: Original 4-cylinder engine for Junkers F 13 aircraft. Motor number 4001. The JL-2 engine was underpowered and was later replaced by JL-5. This engine was bought by Swedish AB Aerotransport in 1926 as a spare and has probably never seen service. It was donated to Tekniska museet in Stockholm in 1937 and has accession number TM13236.
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