Dewalt miter saw won't unlock after blade change

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Forum topic by jtrz posted 12-22-2017 03:17 AM 3333 views 0 times favorited 4 replies Add to Favorites Watch
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174 posts in 2025 days

12-22-2017 03:17 AM

I was swapping blades on my miter saw (a Dewalt DW716) and the piece the blade sits on (I think its the spindle) will not spin. It’s like the locking pin isn’t unlocking the spindle even though the locking pin is not engaged and seems to be working fine. If I put the a blade on it it takes considerable effort to rotate the blade by hand. I haven’t tried it but if I plugged it in and turned it on I would think my motor would be pretty unhappy.

So what is going on? This thing has been working fine. I’ve changed blades a million times on it. I think somewhat put a power tool curse on me. Right when I am trying to make everybody’s christmas present, too.

Any help would be super appreciated. Thanks

-- Jeff | Louisville, Ky

4 replies so far

View Ripper70's profile


1378 posts in 1760 days

#1 posted 12-22-2017 05:14 AM

I would take the blade off and reinstall it, making sure everything checks out. Then plug it in and cautiously pull the trigger. See what happens.

-- "You know, I'm such a great driver, it's incomprehensible that they took my license away." --Vince Ricardo

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10594 posts in 4500 days

#2 posted 12-22-2017 05:33 AM

You could do worse than open the belt cover
and see what you can see.

View jtrz's profile


174 posts in 2025 days

#3 posted 12-22-2017 06:33 AM

I’ll open up the belt cover and see what I see.

It has to be something with the lock pin because it feels like I just have the lock pin engaged. But it isn’t. The lock pin seems to be acting like it usually does. I pulled the lock pin out and everything is how it should be.

Maybe the gears around the spindle are locked up. Looking at the parts diagram, the pinion shaft seems to be right in the area where the problem could be.

The spindle just seems to be stuck in the locked position.

-- Jeff | Louisville, Ky

View daddywoofdawg's profile


1029 posts in 2427 days

#4 posted 12-22-2017 09:24 AM

There is a blade lock sometimes you have to pull the pin and lower the saw like you were going to cut,most of the time it will reset the pin,If it doesn’t want to go down look for the pin/clip the is stop the blade guard for moving. I have had the same thing happened and that was the answer. the pis and clips are on the outside near the blade/blade guard area

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