Chainsaw doesn't turn what's going on chainsaw doesn't spray what to do

What's the reason the chainsaw didn't turn
1, check brush, motor.
2, whether lack of oil, dry, stuck.
3. Whether the motor rotates and the power supply is in place
4. Whether the motor carbon brush has a problem
5. Whether there is a foreign body stuck
What if the chainsaw doesn't spray oil
Electric chain saw does not spray oil, there may be air inside, solution:
1, check whether there is air in the oil circuit, if there is no air injection, exclude the air of the oil circuit towel, the fault can be eliminated.2, check whether the oil supply of the oil pump is normal, if necessary, repair the oil pump
3 Check whether the fuel system is leaking oil, and repair and tighten the connection parts