User Manuals, Guides and Specifications for your Stamina 876 Exercise Bike. Database contains 1 Stamina 876 Manuals (available for free online viewing orSave these instructions and ensure that other exercisers read this manual prior to using the STAMINA®. Recumbent Exercise Bike for the first time. SAFETY INSTRUCTIONS. WARNING: To reduce the risk of serious injury, read the following Safety Instructions before using the 4650 Dual-Action Recumbent Cycle