Kawasaki's Loris Baz decided to err on the side of caution following a high-speed off on day one of the 'unofficial' World Superbike test at Phillip Island on Thursday.

Baz, making his first visit to the spectacular Australian circuit, skipped day two on Friday after experiencing back pain as a result of the accident.

He was lapping in the 1m33s bracket on the ZX-10R when he fell at the second corner and Baz will now focus his efforts on the official test on Monday and Tuesday.

"It was my first time here and I like the track a lot. I was going very well for a time but I crashed on corner two after 30 laps.

"It was a big crash and I want to say sorry to Pere, the team and KHI, and I made the mistake," he said.

"I felt some pain in my back and the team decided not to carry on and to use the time to repair all material to make preparations for the two official test days.

"I'm really motivated to go again so let's see how we go."

Baz's crew chief, Pere Riba, added: "This was the first time for Loris at this track and right away he was going very fast.

"It seemed like the bike was working well for him on the settings we had from the Jerez test.

"We just did laps at the beginning, not trying anything new, to give Loris time in the track," he said.

"So to be doing 1'33s lap times after only 30 laps was very fast. Then he had the crash, so now we prepare for the next tests."