First Start up after rebuilding the engine on the Jawa rt 350 . The bike used to have the Aliminium 350 / 638 engine but i decided to buy this iron cylinder engine model 632 as it has alternater for 12 volt electrics as standard same as 638 but i think the iron cylinder engine is more retro looking so suited my requirments for this bike . Early Jawa 350 / 634 iron cylinder engines had a dynamo and 6 volt electrics . I rebuilt engine as a matter of course as it had stood for years , once these engines stand around for years the main bearings can rust up so i decided to replace all three main bearings .
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