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SAM tennis ball machines are designed for easy assembly and service.  Listed below are service guides and technical downloads for all current SAM ball machine models.  Please email us at techsupport@mastersports.com with any questions.

iSAM Service Guides:
Base Plate Removal
Battery Replacement
Ball Feed Motor Replacement
Control Board Replacement
iSAM User Manual (PDF)

iSAM tennis machine


SAM Portable Service Guides:
Housing Removal
Battery Replacement
Ball Feed Motor Replacement
Control Board Replacement
SAM P1 User Manual (PDF)
SAM P4 User Manual (PDF)


 SAM Portable ball machine

Commercial Service Guides:
Internal Access
Ball Feed Motor Replacement
Oscillation Motor Replacement
Circuit Board Replacement
Commercial User Manual (PDF)
Assembly Instructions (PDF)
Remote Programming (PDF)
 SAM Commercial ball machine



Prince Ball Machines

Master Sports manufactured ball machines for Prince Sports from 1997-2005.  Parts and service are available for all Prince machines manufactured during this nine-year period, including the following models:
  • Little Prince
  • Prince Portable Model 1
  • Prince Portable Model 2
  • Prince Portable Model 3
  • Prince Portable Model 4
  • Prince Sure Fire
  • Prince Hot Shot
Prince machines made prior to 1997, such as the pneumatic Little Prince, are considered obsolete.

Downloads:

Little Prince User Manual (PDF)
Prince Portable User Manual (PDF)
Prince Hotshot & Surefire User Manual (PDF)
Prince Hotshot & Surefire Fuse Installation (PDF)