To top off your references, here is the illustrated parts list:
http://bsintek.basco.com/BriggsDocumentDisplay/default.aspx?filename=Z6kotDVJ1DajI

Here is the owner's manual:
http://bsintek.basco.com/BriggsDocumentDisplay/default.aspx?filename=msowGK-K_ny7tH217FzoPu

The Gregory's book looks good to me, but in case you want the general B&S overhaul manual (all models) it is here:
http://www.tpub.com/content/recoveryvehicles/TM-5-4240-501-14P/css/TM-5-4240-501-14P_70.htm