Star Trac, Fitness Electronics, models:

620-8173	Owner'S Manual
8-Series	Owner'S Manual
8TR	Service Manual
8TRx	Assembly Manual
E-RBi	User Manual
E-STe	Work Instructions
E-TRe	Quick Start Manual
E-TRxe	Work Instructions
S-TR	Owner'S Manual
StairMaster	Owner'S Manual
StairMaster Core Health & Fitness 15" Capacitive Touch OpenHub	Owner'S Manual
Stairmaster 8 Series	General Information