My dw788 motor boggs down when I increase blade tension

[hbeery10]

Purchased a supposedly nearly-new Dewalt 788 within the past year. We haven’t used it much at all yet. Noticing that the motor is bogging down when blade tension is increased. What do I need to know to overcome this motor bog down issue?

[ike]

I have the same machine in fact 2 but never had that problem. Ssorry

IKE

[DWSUDEKUM]

I am wondering if the motor might not be bad.  I have had a Dewalt 788 for a fairly long while and I have never had it bog down when tension is applied.  It is under warranty?  You may wish to call your local Dewalt Service Center and talk to a technician - http://www.dewalt.com/Find-Service-Center.aspx

Let us know what you find out if you will.  

 

 

DW

[Jim Finn]

I have a friend that killed a Dewalt motor every year for five years untill he finaly tossed it.  He was cutting 1 1/2" thick wood, making toys. I guess the DeWalt does not hold up well under hard usage.  This may have been how your motor has been used.

[amazingkevin]

I googled the problem,nothing came up for the Dewalt but for other electric motors it ended up it was the motor self destructing

[NC Scroller]

You should not start your saw with zero tension on your blade. Does the machine run fine with a tensioned blade in it but not contacting wood?

[CharleyL]

If the motor control board has a problem, it will do this, but it could also be the motor. Only electronic testing of both can determine which is bad. Can you use a screwdriver and turn the motor shaft easily while the power is off? There shouldn't be much resistance when spinning the motor this way, unless there is a bad bearing or something rubbing the mechanism inside the case. If mechanical resistance to turning the shaft is encountered, then this may also be the cause.

 

Charley