Hello Colley, production of an FG25-6 started in July 1971 with serial number 20028 until 90001. it have an engine Nissan H20 or Isuzu G201 built in. the part number for the waterpump 8943768300 and for the carburator 9811002420. don't know if these parts are still deliverable if you know the production date.
Regards
Marcb
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