Anonymous posted an answer for this Stihl Ts 410 420 Cut Off Saw Decompression Grommet:
"hi there; my stihl ts 420 does not start easily and it shut off by itself after 5-10..."
Anonymous posted an answer for this Stihl Ts 410 420 Cut Off Saw Decompression Grommet:
"replace the decompression valve. also check for carbon buildup on top of piston. usually..."