English to French Other Mechanics / Mech Engineering

Hi all,

Agricultural machinery context (here sprayers...)

I have these 2 segments:
Adjust tread width to operate with the centerline of the tire 38.1 cm (15 in) from the centerline of the crop row.
(Régler la largeur de voie pour fonctionner avec l'axe médian du pneu à 38,1 cm (15 in) de l'axe médian du rang de culture.)

and

Tread in-out to operate with the centerline of all tires 38 cm (15 in) from the centerline of the crop row.

Merci d'avance