How to replace cylinder and piston Stihl saw TS410 TS420

Special stihl tools used in this repair listed below.
These tools can be purchased from a Stihl dealer.
WOODEN BLOCK 1108 893 4800
ASSY. PIN 1110 893 4700
HOOK 5910 893 8800
INSTALLING TOOL NO.10 5910 890 2210
RING 4238 893 7000