If it ain't broke, don't fix it.

That's Central Coast Mariners' attitude as they prepare to take on Kashiwa Reysol in the Asian Champions League (ACL) in Japan on Wednesday night.

Some reassessment could have been excused after back-to-back defeats for the first time in three years cost the Mariners top spot in the A-League, but goalkeeper Matt Ryan says manager Graham Arnold has told his players to stick to what they know best despite selecting an inexperienced squad.

"We've just been going about business as usual, keeping our focus on what we've been doing all year because it's what we've been successful with," Ryan said.

"I think we've been a little bit unlucky the last two weekends and perhaps we were a little bit flat at the weekend losing to Sydney (FC). But the Western Sydney game I thought we created the better chances and we just couldn't put it away.