To check if the fuel tank vent is clogged, do the following test:
1
Immediately after the saw has stopped and can not be started again, put the unit on the side and open the tank cap completely.
2
Close the tank cap again.
3
Try to start. If it starts but stops again after a short while, the fuel tank vent is clogged.
Check the top surface of the top lid and check the 4 holes. Clean if necessary.