No nothing special, you just cook the engine for 4-8 hrs at Low Crock pot setting, take a toothpruch or a stiff paint brush lightly clean the area's with that and the Engine is as clean as new. I also ensure that my cylinder is open through the exhaust half way so to clean the top of the cylinder and upper portion of the head. Only use Natural Anti-Freeze not the bio-degradeable stuff. Alot of us use Prestone. Then rinse your motor completely with water I take the back plates off and drain them then squirt a little after run oil (Marvel Mystery air tool oil) then spin it through to lubricate everything. Do not use WD-40 it will cause your bearings to rust (Attracts moisture).

Hope this helps.

AMA 6518