I am bad , after posting I reread Operator /Owner manuel not servicehttp://www.mediafire.com/?sharekey=31fe914bdce0f59019747bd91027d4ddf46528a8107c8e29
There's really not much information in the operators manuals. On older machines other than starting instructions and gauge loctations its all the same info. If you download the 743 operators manual you'll have what you need.I am bad , after posting I reread Operator /Owner manuel not service