Make 3 phase motorcycle stator as engine starter

Other Hardware Motors, Mechanics, Power and CNC
30

at a frequency the meter reads about 71,000
I put the meter input on one of the low side gate mosfet and ground on ground.
is the test method correct?

Isn't it possible to control the frequency by setting TCRR1B and TCRR2B like this?

     void loop() { 
  TCCR1B = (TCCR1B & 0b11111000) | 2; //frequensi 3.9kHz
  TCCR2B = (TCCR2B & 0b11111000) | 2; // frequensi 3.9kHz

but why on the meter it reads 71,000?