Joe:
Thanks for the info. I have those two wrenches listed and I had them down as being used to adjust the oil pressure but it is real good to get that comfirmed. What engine on the GP were they used on? I don't have a picture of them thouigh. Can I use yours?
The Spark Plug wrench I can't find anywhere. I can't find it in my liturature for any other tractor either. As you say M-H , Wallis and Sawyer -Massey have a lot of wrenches with T in the # but as yet I can't find anything. Could it be a Spark Plug Company's Wrench like Champion or some other company. Whats your take on it? I'll keep looking.