before, but my KTM of 10 years standin in garage would not kick over, think its seeed up, so put some WD 40 around that round bit think its the piston what do I do next ?
Like wot he said but put the wood in the hole and then hit it with a hammer as sqarely as u can. Once its free have the barrel off (thats the bit around the round thing) and make sure your rings are in one piece. stuff some rag around the con rod before you lift the barrel right of , cos if they are in bits they will make a lovely little tinkling sound as they descend into the sump.
This done take a bucket of petrol and throw it over the lot and as Steptoe suggest use a swanvesta on it.