Schwinn 130 Upright Bike Low Resistance Fix

Unscrew the seat height adjustment knob.

Hold onto the seat as you unscrew the knob or it will drop suddenly.

Remove the seat and adjustment knob.

Pop the clips on either side of the cover.

Remove the cover.

Pop the clips one either side near the seat.

Pop the clips near the handle support.

Lift the cover slightly.

Rotate it out of the way.

Using a 15mm wrench, unscrew the pedal from the arm.

Here are the locations of the six screws holding the side cover.

The first three screws are in these locations.

The second three screws are here.

Work the panel off the pedal arm; rotate it up and to the back until you find a position where it can be removed.

Here you can see the power cord still attached to the connector below the resistance servo motor.

Before proceeding, you'll want to check the position of the servo when the bike is set to its highest resistance.

With the power still connected, turn the bike on and press the Resistance Up button repeatedly until it reaches the maximum.

Unplug the bike without turning it off first so the servo will stay in its current position.

Hold onto the male side of the connector, then use your fingernails to grasp the sides of the female connector and pull it out.

The panel has been removed. Here you see the servo motor and its mounting that must be taken off to adjust it.

For reference, here the servo is at its minimum resistance setting.

Here you see the servo at its maximum resistance position. The red arrow shows where we want it to be.

Grasp the end of the tension spring and unhook it from the servo arm.

Once it's free, let it hang from the frame mount.

Using an 8mm socket, remove the two bolts securing the servo mounting frame.

Space is tight here, so work the servo motor assembly out from the bike frame.

Here is the potentiometer that allows for adjustment of the servo position.

Using a flat blade screwdriver, turn the pot fully clockwise. It has a 3/4 turn maximum rotation, so rotate it back half of its travel to as close to a centered position as you can get it.

Set the servo assembly into the frame temporarily in order to test the setting.

Plug in the power cord. The servo will return to its minimum position automatically as seen here.

Press the Resistance Up button repeatedly until it's maxed out.

The second photo shows the servo motor has traveled to its previous maximum position.

And the third picture tells us our adjustment now allows the servo to reach the position we wanted it in!

Reposition the servo assembly back on the frame and insert the two bolts, but only tighten them finger tight.

If necessary, slide the assembly back until the magnet assembly is a slight distance away from the rotating wheel. Make sure it is not actually touching at any point, then tighten the bolts.