Police were conducting random breath tests on Ettalong Road, Greystanes, about 9.30pm on Tuesday when they saw the man driving a large ride on lawnmower on the footpath.
Officers stopped the 34-year-old driver and asked him why he was riding a lawnmower on the footpath.
“I am taking the lawnmower to my friends house,” the man reportedly told police, adding that he had ridden it from Pendle Hill, about two kilometres away.
Because the mower weighed more than 250kg it was subject to conditional registration requirements as determined by RMS.
The mower the man was riding had no registration that allowed it to be used on the road.
Police conducted a roadside breath test on the man, which returned a positive reading.
He was arrested and taken to Granville Police Station and given a second breath test, which returned a high-range reading of 0.167.
Further inquiries found the man held a NSW learner licence that had expired more than seven years ago.
It had also been disqualified until 2021 due to a number of previous traffic convictions.
The man was issued several traffic infringement notices in relation to the unregistered mower.
He is also due to face Fairfield Local Court on December 17.