Do you have any idea which engine the mower would have come with and if there's a difference in the shaft lengths between the black engine and the red one? It has a red one fitted to it now. I've raised the engine on spacers 9mm and it looks like I'll have to raise it another 6-7mm to get the motion drive belt to stop rubbing on the chassis. Maybe it had the black engine and there's a difference. This stack pulley doesn't seem right for this engine.
