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#12
08-24-2011, 08:21 AM
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Over the years I have seen some pretty weird things.
Castings with pin holes are no exceptions, blocks are machined on a high production basis. Many times when drills/taps or reamers are changed on the machines, they are preset on a jig, allowing it to be a quick change operation for the machine. Standard practice would be to check the affected holes/threads etc after the tooling is changed to see if all is in specks. Sometimes things slip by or a drill/tap is a bit too deep, combine that with a thin casting or porosity and you have a weeper, it is very very common. As others have said here, put a bit of sealer on the appropriate size bolt, and the problem is solved. I could tell many stories about carburetor porosity and epoxy that the factory used to insure non leakers. 
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#13
08-26-2011, 01:41 PM
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Gents,
I believe the mystery has been solved. I spoke with my dealer's mechanic and a tech at Cub Cadet. They both said the holes shown, are machine alignment holes. They are used during the machining of the block to keep the it stationary as tool heads are changed. John and O'l George you were dead on. As you mentioned, Kolhler drilled a little too deep and penitrated the block. Thanks again. 
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
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