We can offer you two tools for the disassembly of engine casings. One for largeframe engines (Art. Nr. 38886000) and another one, independent of the bolt circle with a holding fixture of Ø 37-76mm (Art. Nr. 15196000).
Both tools serve the same purpose. Screwed to the engine case, the bolt gently seperates the two halves of the engine at the crank shaft. The ideal tool for daily tinkerers.
Instructions Art. Nr. 38886000: