M25 Head gasket and shim

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Keith
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Joined: 7/19/07
Posts: 25
M25 Head gasket and shim

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 & Donna
SV: Victoria Dos
Hull #431
Sea of Cortez, Mexico