4
CHAPTER 2: Setup
2.5 ADJUSTING THE SEAT
RECUMBENT BIKE R1x
While seated on the R1x, an optimum position will allow movement through 
the bottom of the stroke without locking the knees or shifting in the seat. The 
knees should have a slight bend at the point of fullest leg extension.
If the seat needs to be adjusted, lift the spring-loaded seat lever on the right 
side of the seat to make adjustments. Slide the seat forward or backward to 
desired location. Release the spring-loaded seat lever and gently attempt to 
rock forward and backward to assure it is locked in place. Check the seat  
distance again and re-adjust it if necessary.
UPRIGHT BIKE U1x
To determine whether or not the seat requires adjustment, sit on it and place 
the foot ankle on the pedals. The knee should bend slightly when the pedal is 
at the lowest point of its rotation. It should be possible to pedal without  
locking the knees or shifting in the seat. The U1x features a vertical ratchet 
seat adjustment system, which makes it easy and safe to change the height of 
the seat quickly. 
To raise the seat, pull the seat upward to the desired height, and let it lock in 
place. Test and re-adjust the seat height as necessary.
To lower the seat, first get off the bike. Holding the seat, pull out the seat 
post knob. Let the seat slide down to the desired height and release the 
seat post knob. Test and re-adjust the seat height as necessary. 
C-SAFE
CARDIO
BATTERY
2.6 SELF POWERED FEATURES
On the bikes, the user’s pedaling generates the power to initialize and display 
information on the monitor. A minimum of 30 RPM (revolutions per minute) is 
required to start and maintain enough power to keep the monitor functional. If 
the minimum RPM is not maintained, the monitor will begin to shutdown. The 
U1x and R1x are able to extend time to display the monitor, at the minimum 
RPM not maintained, if the bikes are equipped with the battery. The bike 
saves its battery charge by moving into a shutdown mode whenever PEDAL 
FASTER appears on the display.
NOTE: The battery is not equipped with the bike for a standard specification. 
If your bike equipped with the battery receives inconsistent use, or long time 
periods between use, the battery may require recharging. The adapter is an 
optional accessory for recharging the unit. To purchase the optional battery 
and adapter please contact Matrix Fitness or your local dealer.
SYMPTOMS OF A LOW BATTERY
If the bike has not been used for an extended period of time, the battery may 
require recharging. Symptoms of a low battery can include:
• A “LOW BATTERY” message will appear on the monitor
• Backlighting on the LCD display will be disabled
• No one uses the bike for an extended period of time.
If the battery must be recharged, use the optional power adapter charging 
unit. The charger should be connected to the bike for a minimum of eight 
hours to ensure a thorough charge. If LOW BATTERY still appears on the 
display after full charging, the battery could be extinct. Please check with an 
authorized service technician for replacing the battery.
REPLACING THE BATTERY
The unit’s battery is built to last for a long time. However, if you feel that the 
battery may need replacing, check with an authorized service technician.
CAUTION: The battery stored inside the unit contains hazardous materials to 
the environment. Proper disposal of the battery is required by the law.
U1x
R1x