1 what? the complete chain is immediately in the trash, because the chain is terrible. the tire is there too, if you take a saw for a summer residence and cut 2 trees at 30 years old, then you can do nothing, if you take it for cutting firewood, then you need to use the drive chain immediately 325 to put a normal tire. put a normal chain with a red-hot tooth. and it is advisable to put a thin children's sock on the air filter so that debris does not get into the carburetor more and more, you don’t need anything. pour more will smoke, the raid is less than the Khan of the piston.