"The goal is to be consistent and to shine when I can," said Carter.
Carter raced in Australia for Suzuki last year and delivered a string of top-10 MX1 results before a crash at a mid-winter Taupo event ended his season with a broken wrist.
Returning to a 250cc bike means a few adjustments in Carter's training regime.
"I've spent a bit of time on a 250 in the last three weeks.
"I've worked on getting a bit lighter and to get the heart rate up.
"There's more intensity because you have to ride harder on a 250."
Carter finished eighth in MX1 in the recently completed New Zealand champs, after a frustrating start at the New Plymouth series opener.
"I had bike trouble and also got cleaned out at the first round and then I got cleaned out again in the second round [Timaru]."
Carter's programme places him among a small group of Kiwi riders chasing international motocross success this year.
Hamilton teenager Josiah Natzke, who won the 125cc national title, is preparing to race in the European 125cc Championship.
Bay of Plenty riders Cody Cooper (Papamoa) and John Phillips (Rotorua) will contest the MX1 class of the Australian Champs and Takaka's Hamish Harwood - who finished runner-up to Australian Jay Wilson in the New Zealand MX2 series - will be among Carter's rivals in the MX2 class.