915b 7 iron idlers and spindle

I lossened the belt to check the deck over and found both idlers have a bit of play in them and the left side spindle has a little play and is gritty. Mower has 93 hours on it with warranty till July 19. Are these parts covered by the warranty? The blade and spindle look fine. The cut is great too.

The mower is new to me and looks like it was well taken care of. Still has tits on the tires.

Thanks