FS5315M Feeltech servo motor not wotking

Hello all,

I would like to know if you ever encountered with a servo motor that didn't follow the code?
I bought a Feeltech FS5315M, (datasheet - https://www.4project.co.il/documents/doc_6799_5855.pdf )
servo motor that rotates 3.5 turns (1260°). At first, the motor didn't move and ticked after several seconds it moved a little bit and slow and than did about 3 turns quick, switched direction did 3.5 turns and then again nothing for several seconds, and moved slowly a little bit and so on..
I thought it was power problem but it's powered by 6V (4XAA).
The code is the example code for sweep (but 1260° and not 180°)..

Can someone help me please?

Itay

Can you post your code? Use code tags. Saying that your code is the tutorial (but with changes) gives me no confidence that I know what changes you made. Post it so that there is no guessing.