Gray import tractor although were exported to USA and Europe.
Getting filters and parts are tricky.
Guys at WA Filter Supplies were brilliant. 12 Tilli Place Welshpool WA
Oil Filter - Sakura C-1032
Fuel Filter - Sakura F-5202 (slightly longer than Yanmar original)
Air Filter - Ryco A261 (needs to be modified to allow bolted arrangement - top drilled out)