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Not sure how to replace the blade...is the arbor nut reverse thread?

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Chain saws don't have an arbor. They do have covers over the clutch system that drives the chain that are held on by two (sometimes one) nuts. You only have to remove the cover to change the chain, not the clutch. The nuts are the normal lefty/loosey righty/tighty on all the chain saws I've worked on. Can't say much more without knowing what kind of chainsaw you have.

Posted on Aug 19, 2010

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How do you change a blade on model 36-075


Lots of saws have left hand threads on the nut that holds the blade in place. It is designed so that if the saw starts up and the nut isn't snug, the nut and the blade slipping on the turning arbor would tend to tighten the nut as they slip against the force of the spinning arbor.
1. Unplug the saw.
2. Hold on to the blade tightly with one hand.
3. Put the wrench on the arbor nut and turn it in the direction you would turn it as if the wrench were turning the blade to cut wood.

If you've previously overtightened the blade, jamb a piece of wood against the teeth and the saw table top and then follow step 3.

If the motor is on the left side of the blade as you face the saw, then it's a standard right hand nut.
If the motor is on the right side of the blade as you face the saw, then its a left handed nut.

Sep 17, 2014 | Delta Circular Saw Blade, 10 Dia, 50T -...

2 Answers

Can't unscrew arbor nut on my MS250 Delta Miter Saw. Tried everything to turn it counterclockwise with no success.


The arbot bolt on your saw has reverse threads or righty-loosey, lefty tighty. You should be turning it clockwise as you are looking at it or in the same direction the blade turns when cutting. The arbor bolt on these saws are reverse thread so that they are self tightening while the saw is in use.

Feb 08, 2012 | Saws

1 Answer

Having problem get blade off table saw any hints


Unplug the saw, first and foremost.
Then see if your saw arbor has facets for a wrench behind the blade, and if so, try to find a slim wrench that fits there to hold the arbor while you attempt to loosen the arbor nut that holds the blad on. If that doesn't work, take a stick of wood, like a piece about 3/4" x 1 1/4" x 12-16" long, remove the throat plate from around the blade, wedge the stick between the blade teeth and the edge of the throat slot to hold the blade in place firmly, exerting levered force toward the center of the blade to hold it in place, and using the wrench, loosen the arbor nut. Make sure you are attempting to loosen in the correct direction. Depending which side of the blade the nut is on, some nuts are reverse threaded.
Good luck.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Jul 19, 2011 | Craftsman 10" Table Saw

1 Answer

Removing Pro-tech table saw blade, is the nut holding it reverse thread? or standard?


Ralph, the arbor thread on a left tilt table saw is "standard" thread direction - that is, when looking at the end of the arbor (which of course you can't do on a table saw) turn the nut in a clockwise direction to tighten, counterclockwise to loosen.

Hope this helps.

Regards,

DIYpro

May 01, 2011 | Garden

2 Answers

How do I change a brush? I can't get the axle locked to get the nut off. Can you help me?


Remember if you are trying to change the left side it is a reverse thread nut. You would turn it clockwise to loosen. IF it is very tight, put a wrench on both sides. IF the right side comes loose, remove brush/grinding wheel, and re-install nut, with an extra nut locked to the first one, the put a wrench on both sides again.

Sep 30, 2010 | Sears Rockwell 8 in. 3/4 hp, 5-amp Bench...

1 Answer

My saw problem has to do with changeing the blade. I'm useing a thin kirf blade. When I change the blade I have to put a wrench on the arbor next to the pulley to keep the arbor shaft from turning when I...


The nut is binding on the arbor because the threads are buggered up or clogged with something. It could be the nut (which is probably brass and soft) or the arbor (which is steel). If it got a little cross threaded, the damage will be on the nut. It might be the arbor if the arbor took a whack. Once you have it apart you should be able to see it - although the damage might be pretty small. You aren't likely to have a tap and die to run through the threads, but you can probably fix it with a little rotary tool (like a dremel) using a small disc. If it is the arbor you can use a triangular file. Or you can buy a new nut. I hope this helps.

May 17, 2010 | Craftsman 10" Table Saw

1 Answer

Replacing 10 in blade


Look at the threads on the saw blade arbor, that will tell you which way to turn the nut to get it off.

May 04, 2010 | Craftsman 10" Table Saw

1 Answer

How do i get guard out of way to replace blade..DW718


Make sure the saw is unplugged, manually move the blade guard up to it's fullest extension, push the arbor lock to make sure the arbor and blade do not spin (on front of saw motor housing), then wrench the nut holding the blade to remove. Remove the old blade, install new one and reassemble in reverse order. You can take the guard off completely if you choose, but it is not necessary. I hope this helps and good luck!
PLEASE REMEMBER TO VOTE AND LEAVE A TESTIMONIAL. THANK YOU

Mar 30, 2010 | Dewalt 12" Beveling Sliding Compound Miter...

2 Answers

How do i change the blade on my delta 10" mitre saw


Exploded diagram for your SM100M miter saw is here.
User manual is here.

Page 20 covers blade change operation.

Make sure you unplug your saw! You need to remove a screw from the cover and rotate the cover to the rear. Use a hex wrench in the motor shaft to keep the saw blade from turning, and loosen the arbor nut with a 1/2" wrench. The arbor is reverse threaded, so you'll turn it clockwise to loosen, then counterclockwise to tighten it up after you have swapped the blade.
Rotate the cover back after that's done, and replace the screw.

If this was useful, please vote. Thanks.

Nov 23, 2009 | Delta SM100M 13 Amp 10" Compound Miter Saw

2 Answers

How to change the saw blade


Adjustments
LARGEHEXWRENCH
TO REPLACeTHE BLADE
See Figures 43 - 45.
 Unplug the saw.
 Lower the saw blade, raise the blade guard, and remove the throat plate.
 Make sure the bevel locking lever is securely pushed to the left. Raise the saw blade to its full height by turning the height/bevel adjusting handwheel clockwise.
 Using the smaller hex wrench, insert the flat open end into the flats on the arbor shaft.
 Insert the closed end of the larger hex wrench over the hex nut. Holding both wrenches firmly, pull the larger wrench forward to the front of the machine. Make sure the blade nut is securely tightened. Do not overtighten.
Check all clearances for free blade rotation. See To Set the Scale to the Blade. In cutting operations, the scale will be set to the side of the blade where the cut will be measured and made.
To replace the blade with an accessory blade, follow the instructions provided with the accessory.
To install a standard blade:
 Place the new blade on the arbor shaft (the teeth must point down toward the front of the saw to work properly).
 Place the blade washer and the blade nut over the blade arbor. Be sure the dome side of the blade washer faces out from the blade and that all items are snug against the arbor housing. Tighten securely.
SMALLHEXWRENCH
Fig. 43
Blade
Bladewasher
arbor shaft
Bladenut
Fig. 44
BLADEGUARD
THROATPLATE
spreader
BLADE
Fig. 4535
ADJUSTMENTS
 Rotate the blade by hand to make sure it turns freely.
 Lower the saw blade and reinstall the throat plate.
NOTE: Securely tighten throat plate screws. Do not allow the throat plate to bow up above the table surface.

Sep 18, 2009 | Saws

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