gr1600-2 - breaking belts despite all new pulleys! uprated aftermarket belts available?

hurricanee

New member

Equipment
GR16500
Aug 14, 2025
1
0
1
IRELAND
Hi,
to cut a long story short, i replaced all pulleys after a belt snapped. two were rough but i replaced all for peace of mind.

Now after 20 minutes mowing, im getting belt smoke and slippage.

tension appears okay so I am guessing pulley alignment? is alignment by eye the only way to align these on the deck?

I am using an aftermarket dunlop belt, which is the correct size? do I really need an oem kubota item?

Are there aftermarket uprated belts for higher HP decks that are worth looking into?

What else could this be, bar a tensioner or pulley alignment issue?

ive noticed when mowing at a gradient, ie one side of the tractor significantly higher than the other, then the belt smokes and breaks.

hoping someone can point me in the right direction!

thanks