Question about Bosch 4000 - 07 Electric Table Saws

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Blade vibrating tried to rip a piece of MDF. It got caught and twisted the blade. It seems like either the blade is bend or the motor shaft. It made funny noisy after I switched it off especially near the end of the spinning.

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Hi, put a new blade on and try it again
If you need more help please write again
Was this solution helpful? Show your Appreciation by rating it:

Posted on Nov 21, 2008

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B&D Elct mower crapped out today,rock?? started making a funny sound. and the same noise with a lttle white smokeLooks like th a belt of some sort under the blade is out of place. Any suggestions?


You've either broke the motors housing moving the motor out of alignment or the impact on the blade has snapped the drive belt by the sudden torque or it's been jerked off by the sudden stop of the blade it's been yanked off the drive pulleys and the nose is the motor running free with no blade resistance you will need to open up and inspect the drive belt assembley system the blade drive shaft pulley access area and the motor access area to either replace the broken belt or refit the belt if it's not been chewed or damaged by the free spinning motor pulley the smoke it was proberbly the belt rubbing against the motors drive pulley or wrapping up around it burning it through friction
Or your broke the motors drive shaft HOUSING allowing the driving motor and pulley to become misaligned dropping drive belt off
The motor funny noise if a banging around sound then is was the still running motor pulley is bouncing around and rubbing against the deck ect. Causing the smoke if this has happened the impact with the stone has caused a kickback effect on the motor twisting it out of its housing breaking it's secure mounts meaning the decks motor is loose the housing has gone, the MOWER extremely dangerous as the motor can at the speed it's running at 3000rpm it will chew thought the rest of the deck in a matter of seconds throwing and ripping itself from the machine sending chunks of broken deck and the motor flying in all DIRECTION possibly causing injuries to any one within range and as the wires rip apart and a possible nasty and even fatal electric shock please for your own safety do not use the lawnmower
Until it's been inspected by qualified personnel
It is highly unsafe and should either be repaired or replaced which ever the cheaper
Advice to check the area your cutting esp when using a high impact resistant plastic deck lawnmower for hidden foreign objects large and small stones as the small ones can be thrown by the blade like a "bullet"! small toys esp metal cars etcetra will make excellent shrapnel and cut the fabric grass box to ribbion it's also you if directly in the debris path Also not good for your lawnmowers blade or deck
Pavement slabs are defiantly known as the silent MOWER DESTROYER YOU can't hear it, as you aproch you can't see it before it's too late, there's a Loud bang the MOWER stops that exact same instant and the MOWER IS NOW KNOWN AS BROKEN "!
Esp on petrol mowers slabs tend to stop the MOWER dead bending the crank shaft the mowers with a slightly bentccrank will jump Round like it's on steroids or vibrate so badly it will shake itself apart as well as leaving a, very odd sensation in your arms
Deposits from animals are just nasty to clean off the deck and wheels so I clear them up too if THERE are any just in case

Jun 02, 2016 | Black & Decker Black and Decker Mm575 18"...

1 Answer

My wife hit a stump and bent the blade. I replaced it and the mower has a vibration it didn't have before. Could the shaft be bent?


Hi ptcbob7...
Yes, she bent the crankshaft...very hard to get the bend out, most of the time a new engine is in line.
Being that your going to have to replace the motor anyway...I would take a large hammer and give it a good whack in the opposite direction of the bend, it may not take it all out, but it will take out some of the bend.
Please take time to rate me

Aug 30, 2011 | Briggs & Stratton Briggs Stratton...

1 Answer

The mower vibrates hard I replaced the fan and


you could have a bend blade or bent armeture shaft if you hit something that hard

Mar 28, 2010 | Black & Decker Lawn Hog 18-Inch 12 Amp...

1 Answer

Cutting 19mm oak veneered mdf with my new 28v


check to see if u can increase the speed, or try on a thinner piece of wood. or even try a new blade with more teeth.

Aug 13, 2009 | Dewalt DWS520SK Track Saw Kit with Short...

1 Answer

Motor works but blade not spinning


Check and make sure that the shaft in the base housing spins. If it does, the blade assembly has become disconnected from it's shaft probably due to an improper spot weld or peening of the blades to the shaft, or has torn loose or ripped the splines out due to an immovable object trying to be spun. A jammed ice cube can do this. Blade assemblies can be had usually directly through the manufacturer and usually on line. If this has helped, please rate it accordingly.

Jul 20, 2009 | Westinghouse 0101 IntelliBLEND¿ Work...

1 Answer

Blade wander


a jigsaw is for cutting wavy lines if u want a straight cut use a rip saw with fine blade but you still can use a jigsaw must have sharp blade there is a blade u can get now from screwfix with a triangle spine on the back off the blade to prevent it twisting works fine (also do not push hard on the powertool let the blade do the cutting less likely to wander hope this is of help

May 30, 2009 | Bosch 1590EVSK 6.4 Amp Top Handle Jigsaw

1 Answer

Blade is loose


on the inner part of the motor [fan side] look for an external snap ring and a fiber spacer. the armature fits all the way into the rear part of the housing, the other housing goes over the motor shaft and must press against the snap ring and fiber washer.

Sep 03, 2007 | Vornado Circulating Fan

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