Kenmore 417.88042700 dryer makes rhythmic squeak

Brand:Kenmore
Model Number:417.88042700
Main Symptom:rhythmic squeaking
What happens & when: when I start the dryer there’s a rhythmic squeaking noise that continues for the entire dryer sequence.

Error Code (if any):NA
Parts or tests already tried:none
Photos / video link:none

Hello Evitpol, it sounds like the idler pulley is starting to wear out, which will cause a squeaking noise similar to a mouse squeak. Frigidaire 131863007 Dryer Idler Pulley Assembly | Genuine OEM Part

Should I also get a new belt as well?

It would not hurt to replace it. This way it ensures that the belt being used is not affected by the original idler pulley. Frigidaire 134503600 Dryer Drum Belt | Genuine OEM Part