This sprayer was the workhorse of the Magnum line of consumer branded sprayers by Graco. Now discontinued it lives on as the PRO X9.  
Most parts are still available to keep your sprayer running but there are some significant pieces that cannot be replaced anymore.

Please note that motors for the A,B, & C  series sprayers are no longer available. Front cover plates for the B, C, D series sprayers are discontinued. There are no motor brushes for these units; motors were sold as complete with the front housing.

To keep your sprayer running, be sure to keep the pump as clean as possible and to use Throat Seal Liquid in the wet cup at all times. Also be sure to plug it right into the wall or use a stout (12 gauge) extension cord.

OPERATIONS
REPAIR MANUAL
Numbers are changed to reflect where applicable