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The Simson gang has given our Simson specialists an engine block. Mario and Reiner are to regenerate it. The cylinder is solid, probably rusted. But the inside of the engine actually looks pretty good! This is how the engine overhaul works step by step. 4:10 Release the clutch pressure springs 4:40 Release the primary drive 07:05 Clutch pressure pins 08:05 Pull the engine apart (carefully!) 09:35 Gearbox shafts 11:40 Clean the sealing surfaces 13:00 Wash 13:10 Measure and grind the cylinder 16:30 Insert the bearing 17:20 Assemble the gearbox 21:40 Insert the crankshaft 24:10 Put the housing on 26:45 Put the clutch basket on 28:50 Clutch pressure pins 30:30 Insert the clutch springs 31:40 Put the cover on and screw it tight 35:30 Put the new upper needle bearing and piston on 37:10 Put the cylinder on 41:50 Add the oil - done! Mario and Reiner Klemt from Suhl are the Simson specialists. They love mopeds, their workshop is on the historic Simson site. Father and son have been tinkering since they were children - they know what they're talking about! You can find more tutorials about the cult motorcycles here: https://www.mdr.de/s/simsonspezialisten Watch the documentary “Die Simsonbande” in the ARD media library: https://www.mdr.de/s/mediatheksimsonb... #simson #simsons51 #schwalbe #tutorial #instructions #do-it-yourself #screws #two-stroke