follow the power lead downward from the battery positive and you will locate it.  To get at motor  work out whether to best  approach it  from the top, or come in  from underneath.things will need to be removed (the less the better)
never ever use grease on the bendix screw drive causes more problems than it fixes, just ensure screw thread is absolutely spotlessly clean and returns freely.
                
 wirecutterman
                
 December 2009