ford 1710 freeze plugs

Thanks to this forum I was able to locate and buy new freeze plugs for my 1710 ,H843, Tractor..After installing two, the engine ejects them (and the coolant) shortly after I start driving at mowing RPM's(2000). The person helping me thinks that the engine is building too much pressure in the...

I need (1) freeze plug (on right side when viewing from the seat) thats behind the fuel bowl. Shiabaura H843 3 cyl diesel, need part number, source, and/or dimensions. Thanks in advance!