MGD4200BW0 Maytag Dryer - Instructions

Lubricated pulley wheel which temporary reduced noise. This verified what was making noise. Looked up the part on partselect.com and ordered it. Recieved idler pulley with bracket in just a few days.
Quickly removed back panel using nut driver with drill. Slipped belt off pulley, removed one screw with plyers to released spring and removed old assembly.
Inserted new assembly, connected spring, slipped belt back on roller.
Tested before replacing back panel.
All was very quiet. Replaced back panel.
All done

Turn off electric to unit.
Remove lint trap.
Remove lower cover below dryer door. 1 grey clip on either side. Bend upper portion of the clip down while pulling forward on panel.
Remove 4 1/4 inch bolts that hold blower duct to fan.
Push pulley upward while removing belt.
Use a small angled pick to remove pulley lock ring.
Install new washer and pulley. I added grease to pulley shaft.
Hope this helped. Good luck

Removed the top of the unit. Then removed the control board by removing a few screws. Next was to take the top portion of the front of the unit away from the frame by removing the upper level of screws and loosening the lower row of screws. This allowed me space to clip out the faulty door switch and connect the new part. Put it back together and the unit sings like a bird with a worm!

I took off the back panel off the dryer. The idler pulley could be accessed on the bottom. It was a bit cramped but not too tough to replace.

first of all there is no video for this model dryer (cabrio accu-dry) the main difference is that the console is removed by removing 3 screws across the back top of console then using putty knife release spring fastener on each side ,slide forward and lift. remove one screw at top of control board and remove from plastic mount,and unplug connecting wires.remove top of cabinet lifting up and forward. The rest of install is typical to other models. The back panel doesn't come off this model. You have to access everything from the front.

Took back panel off, and it was really easy putting the new idler pulley in.

Message indicated something amiss in the motor circuit. Followed Instructions in the on-board manual. Turned out to be the internal-bias thermostat, and the exhaust air thermistor both. Changed faulty parts, cleaned lint from the system and we are off and running again.
Thank You.
DW Pranger

I ordered the part(and a backup) and had it in two days. 5 days less than ordering from sears.

pull the back off and replace the pulley.

Took door off with a Phillips screwdriver went to hardware store with door so he could match up the 6pt screwdrivers that were needed.
No more then 1 hour to do.

Disassemble dry. Put on new pulley wheel. Greased pulley wheel. Put dryer back together. Works great. Yours truly G.B.

Lint can build up inside the dryer, and can cause a fire in EXTREME cases. If your model has a back panel that exposes the entire chute, this job is much easier. Unscrew the chute from the machine to remove it. Inspect and clean all the lint out, especially the bottom, next to the fan blower. The other version machine has a panel at the top that is welded on. Remove the two screws at the top corner of the rear bulkhead, where the chute is. Gently pull this inner panel away to free the top of the chute from the rear top panel. Then pull the chute down and out. Follow the reverse to complete the job.

Pulled the back panel off with nut driver , reached in removed belt from pulley , disconnected the spring , removed the the 1 bolt holding the bracket .
Put the new one in , in reverse order . Very simple , maybe 15 minutes total . While back is off , shop vac out any lint !!

Followed video on PartsSelect website, they made it real easy.

I thought it had to be the igniter so I replaced that part. The dryer still did not start. I replaced the high limit and hoorah dryer works. Two weeks go by, the dryer is drying the clothes but my wife smells gas in the laundry room. I replaced the coil pak on the gas valve. My wife says she still smells gas. I replaced the radiant flame sensor and no gas smell for 2 weeks now.