HS-40 Head bolts

#1
I am trying to restore a rupp hs-40 engine. Does anyone know the diameter and size of the head bolts. It appears that 5 are the same size and 3 are a bit longer. I did not see a tecumseh part number for head bolts??
 
#2
Measure the length of each hex head cap screw:

Tecumseh 6021A
Screw, Hex flange hd., 5/16-18 x 1-1/ 2

Tecumseh 650694A
Screw, Hex flange hd., 5/16-18 x 2

Tecumseh 650696
Screw, Hex hd., 5/16-18 x 2-3/4
 
#4
intake and exhaust hs40

thanks for the help. I have just removed the spring and end caps of the intake and exhaust end caps and springs. The exhaust was able to slide right out, the intake keeps getting caught up on something. Nothing seems to be holding it up to be removed. any help would be great
 
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