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Model # 374296221 Official Lifestyler ergometer treadmill
Here are the diagrams and repair parts for Official Lifestyler 374296221 ergometer treadmill, as well as links to manuals and error code tables, if available.
By Schematic
SELECT DIAGRAM
Browse Parts for
374296221 Fitness & Exercise
#134
All parts diagram
Mtr mount
Part #38215710
The manufacturer no longer makes this part, and there's no substitute part
#140
All parts diagram
Motor
Part #37020500
The manufacturer no longer makes this part, and there's no substitute part
#100
All parts diagram
Side rail rh
Part #38176616
The manufacturer no longer makes this part, and there's no substitute part
#101
All parts diagram
Side rail 2h
Part #38176916
The manufacturer no longer makes this part, and there's no substitute part
#153
All parts diagram
Screw
Part #21020300
The manufacturer no longer makes this part, and there's no substitute part
#154
All parts diagram
Lock nut
Part #25013300
The manufacturer no longer makes this part, and there's no substitute part
#9
All parts diagram
Red key cvr
Part #29282000
The manufacturer no longer makes this part, and there's no substitute part
#7
All parts diagram
Grip
Part #04025700
The manufacturer no longer makes this part, and there's no substitute part
#127
All parts diagram
Adj tube
Part #38177610
The manufacturer no longer makes this part, and there's no substitute part
#126
All parts diagram
Adj rod
Part #38177510
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for treadmills
Choose a symptom to see related treadmill repairs.
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…
Main causes: rear roller out of alignment, damaged walking belt, bad roller…
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…
Main causes: faulty sensors, wiring failure, bad control console…
Main causes: bad control console, wiring failure, bad motor control board…
Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…
Main causes: damaged walking belt, improper belt tension, bad roller bearing…
Repair guides for treadmills
These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

How to replace a treadmill motor controller
Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…
Repair difficulty
Time required
15 minutes or less

How to replace a treadmill walking belt
A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…
Repair difficulty
Time required
45 minutes or less

How to replace a treadmill drive motor
A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…
Repair difficulty
Time required
15 minutes or less
Effective articles & videos to help repair your fitness & exercise
Use the advice and tips in these articles and videos to get the most out of your treadmill.

Get answers to frequently asked questions about Sears and Sears PartsDirect.…