Table Saw: Blade spins too slow

Worn motor brushes, a faulty drive motor or using an improper extension cord can cause slow motor speed.

Using a long or lightweight extension cord causes a power drop, which decreases motor speed and results in the blade spinning too slow. For a 120-volt table saw plugged into an outlet protected by a 15-amp circuit breaker, extension cord length typically shouldn't exceed 25 feet. Use a shorter or heavy duty extension cord that can handle the current draw of the table saw so the motor spins at the right speed.

Worn carbon motor brushes can prevent the drive motor from running at full speed, so inspect the motor brushes. Replace the motor brushes if they're worn.

If the motor brushes are okay, then an internal motor failure may prevent the motor from spinning the blade at full speed. The motor typically overheats when it has an internal failure. Replace the motor if it overheats and doesn't spin the blade at full speed.

table saw

These repairs may help solve your table saw problem

Replace the table saw carbon motor brushes

Replace the table saw carbon motor brushes

The spring-loaded motor brushes on the table saw mount against the rotating armature, transferring power to the armature. The motor brushes wear down after about 50 hours of run time. Replace the carbon brushes regularly to keep the motor running smoothly.

April 1, 2015
By Lyle Weischwill
How to replace a table saw motor brush set

If your table saw motor is weak or won't run at all, the motor brushes could be worn. This repair guide and video show how to replace table saw motor brushes.

Repair difficulty
Time required
 45 minutes or less
Read more
Replace the table saw drive motor

Replace the table saw drive motor

The table saw blade mounts directly to the drive motor arbor to spin the saw blade for cutting wood. A defective drive motor won't start or it trips the overload. Replace the drive motor if it's defective or worn out.

April 1, 2015
By Lyle Weischwill
How to replace a table saw drive motor

If your table saw motor won't start, the motor might be worn. This repair guide and video show how to replace a table saw drive motor.

Repair difficulty
Time required
 45 minutes or less
Read more
Symptoms for table saws

Choose a symptom to see related table saw repairs.

Main causes: blade alignment needs adjustment, worn blade, bevel positive stops need adjustments, bevel pointer needs adjustment
Main causes: dirty saw blade, dull or damaged saw blade, blade alignment needs adjustment
Main causes: saw dust build up, blade elevating and tilting mechanisms need lubrication
Main causes: lack of power, broken on/off switch, bad motor overload, broken power cord, bad drive motor
Main causes: worn motor brushes, bad drive motor, faulty overload switch, using an improper extension cord, binding saw blade
Main causes: worn motor brushes, faulty drive motor, using an improper extension cord
Repair guides for table saws

These step-by-step repair guides will help you safely fix what’s broken on your table saw.

April 1, 2015
By Lyle Weischwill
How to replace a table saw drive motor

You can replace a table saw drive motor that is weak or won't run. Here’s how.

Repair difficulty
Time required
 45 minutes or less
April 1, 2015
By Lyle Weischwill
How to replace a table saw motor brush set

Worn motor brushes can make the table saw motor run weak. Here’s how to replace them.

Repair difficulty
Time required
 45 minutes or less
April 1, 2015
By Lyle Weischwill
How to replace a table saw blade

If the table saw blade is dull or damaged, use these simple steps to replace it.

Repair difficulty
Time required
 15 minutes or less
Articles and videos for table saws

Use the advice and tips in these articles to get the most out of your table saw.

April 1, 2015
Table saw common questions
By Sears PartsDirect staff

The answers to these common questions can help you make the most of your table saw.

March 23, 2015
How to make basic cuts with a table saw
By Sears PartsDirect staff

Learn how to make basic cuts using a table saw.

March 10, 2015
How to use a table saw safely
By Sears PartsDirect staff

Learn some of the basic rules for safely operating a table saw.