Arm Ergometer (Upper Body Bike)

How to adjust

Set the crank height so the axle is level with your shoulders when you sit tall; on models with their own seat, also set the seat height, and on models without one, bring a chair or wheelchair into position instead.
Set your distance so your elbows keep a slight bend at the farthest point of the circle instead of making you reach.
Set a low resistance on the console for the first few minutes and only then build it up.

Sit on a stable chair — or roll your wheelchair in and lock the brakes — with the crank axle at shoulder height, sit tall and take a firm grip on both handles.
Turn both arms in smooth circles, bracing your core so your torso doesn't sway with each revolution; you can reverse the direction partway through to change which muscles carry the load.
Hold a pace at which you can still speak a full sentence; when your arms tire or you run short of breath, lower the resistance rather than letting go with one hand mid-session.
To finish: taper the resistance down, slow the cranks until they have come to a complete stop before you let go, then back the chair or wheelchair away from the machine before standing up.

The cranks keep turning under their own momentum after you stop driving them: hold the handles until the axle has slowed right down, and to stop mid-session brake them gradually instead of letting go suddenly, since a spinning handle can hit your hand or wrist.
Set your seat/chair distance so your arms aren't fully locked out or overly cramped at the crank's extremes, to protect the elbows and shoulders.
Chest tightness, unusual breathlessness, dizziness or an uneven heartbeat means slowing the cranks to a stop, ending the session and getting checked — don't try to finish out the time.
Start at a low resistance for the first few minutes to warm up the shoulder and elbow joints before building up.