The Economic and Finance Committee of State Parliament adopted a motion on September 23 to establish the inquiry to "investigate whether existing laws provide farmers with adequate warranty protection and grievance resolution procedures".

Labor MP Tony Piccolo has been the driving force behind setting up the inquiry.

He said it would give farmers the opportunity to air any grievances about the performance of agricultural machinery and equipment manufacturers.

"Farmers can put written submissions in, and if they want to present their case verbally to the committee, they can stipulate that in their submission," he said.

Mr Piccolo urged farmers not to engage in mudslinging and "just stick to the facts" in their submissions.

He said the inquiry was promoted by complaints he received from farmers who claim to have lost tens of thousands of dollars in legal costs, allegedly trying to get manufacturers to undertake repairs to faulty equipment.

"The inquiry will provide farmers with the opportunity to tell their story without fear of legal action or retribution by manufacturers," he said.

South Australian Farmers' Federation chief executive officer, Carol Vincent has welcomed the inquiry.

"While the initial problem may be covered by warranty, the problem often continues when it is outside of warranty and manufacturers are then (allegedly) refusing to undertake further work," she said.

"As a result, many farmers are facing substantial costs, with the expense of repairs, the loss of productivity and legal fees."

* Details: submissions can be sent to: Executive Officer, Economic and Finance Committee, Parliament House, North Terrace, Adelaide, SA, 5000. Call (08) 8237 9223 or email efc.assembly@parliament.sa.gov.au with any questions.