hello friends I have a drean excellent blue 6.06 starts turning to the side and when the direction of rotation changes it makes a noise like it wants to start and stops by deactivating the platelet Disassemble the engine check the continuity of the coals and it seems to be fine what I don't know if the tachometer has to do with this and if this is how I verify its operation. I appreciate the help you can give me, thank you in advance

Motor armature has problems. It has no solution. Change engine