M25 Head gasket and shim

[keith]

I'm getting exhaust into the cooling water on my M25. I believe it may be a leaking head gasket. Both the Universal & Kubota parts manual diagram show a head gasket and a shim (2 pieces). When removing the cylinder head there was just a head gasket no shim. Should there also be a shim as per the diagram in the parts books?

Keith
SV: Victoria Dos
C36
Hull 431

[fulvio]

I was googling around with exactly the same question.  Too bad nobody posted an answer.