locator screw

["Drew Palavage" <palavagedrew@hotmail.com>]

Another question...several months back when changing my oil, I found a small 
screw in the oil pan..looking online, someone mentioned that this is 
probably the "shaft locating screw" off of the rocker shaft...what does this 
screw do?  Is there anything tricky in replacing it?  The author of the 
previous message recommended putting loctite on the threads to prevent it 
from coming out again....Thanks, Drew

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