TM 10-3930-671-24 g) Check starter ground circuit. Connect a voltmeter  from  the  frame   (body)   of   the   starter motor  to  either  a  point  on  the  engine  flywheel housing    or    the    bolt    that    mounts    the    battery negative  cable  to  the  ground  connection  on  the engine  or  frame.    While  cranking  the  engine,  a reading higher than 0.2 volts indicates excessive resistance.  Clean the starter mounting bolts and flange. Alternate - Connect the voltmeter from the frame of the starter motor to the battery negative terminal post.  While cranking,  a  reading  higher  than  0.4-0.6  volts  indicates excessive resistance. Clean  starter  mounting  flange  and  bolts,  check  battery negative cable for damage, and clean and tighten battery cable connections. F-305 (F-306 blank)