Could also be a 1.3L Kent, or a 1.6L Kent, they've been used in small industrial applications
for about 40 years. Last one I played with was a 1.3L in a Tennant sweeper/scrubber. Great
little engines, designed in the mid '50s, and was the basis for the original Lotus twin cam...

Steve & the Rockette
'63 F100 4.8L V8
'68 F100 6.4L V8
'72 Capri 2L
'73 Capri 2.6L V6
'73 Capri 5.0L V8
'73 MG B GT 2.6L V6(Ford)
2 '76 Capris, 2.8L V6s
'78 Bronco 7.5L V8
'86 F150 5.0L V8
2 '87 XR4Tis 2.3L Turbo
'01 ZX2 2.0L DOHC
'08 Subaru Imprezza 2.5L DOHC Boxer