If you need technical information or help with your early crossover gearchange squarecase Ducati 860/900 engine - post your FAQs, comments & questions here.
With the plugs out the cheap and easy way is to put the bike in 3rd gear and turn the engine with the rear wheel.You do have to watch the action of the valves and the piston position through the plug hole to see if you are at TDC.