To replace the drive belt on a Kubota T1670 lawn tractor, first, ensure the tractor is on a flat surface and the engine is off. Remove the mower deck by disconnecting the necessary pins and belts, then locate the old drive belt on the engine and transmission pulleys. Slide the old belt off and replace it with the new one by threading it around the pulleys in the correct path. Finally, reassemble the mower deck and test the new belt to ensure proper tension and function.
I attached the specs sheet for you.
SAE 10w30 any major brand. I recommend you use a 100% synthetic oil.
on rear of machine - in middle. Should be a thin steel rod - pull rod out towards you while pushing mower.