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How to fix KS12-1 circular saw?

gencomm
Getting Established

How to fix KS12-1 circular saw?

My KS12-1 circular saw blade slips on the spindle. how can I fix this?

MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: How to fix KS12-1 circular saw?

Hi @Noyade,

 

I double-checked with the AEG technical team, and they confirmed that the flat side of the external flange goes against the blade and not the tapered side. I mentioned your observation, and they are now looking into the image as they believe the flange is pictured in the incorrect position.

 

Mitchell

 

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MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: How to fix KS12-1 circular saw?

@gencomm,

 

If switching the flanges side so the flat side is against the blade does not work, AEG have advised that they would like to take a look at the saw for you to determine the issue. It could be a manufacturing fault and if so they will replace parts. Please take the unit to your closest Bunnings store with your proof of purchase and they will initiate a warranty repair.

 

Mitchell

 

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Re: How to fix KS12-1 circular saw?

Afternoon @gencomm and @MitchellMc 

 

"they are now looking into the image as they believe the flange is pictured in the incorrect position."

 

It will be very interesting to see what AEG come back with. I had a look at French and Russian YouTubes with the KS12-1 and they definitely show a wide outer flange with a very obvious taper as seen in the schematic on the first page.

But Googling (eBay - Cashies - Cash converters) in Australia - I keep seeing that flange @gencomm has - flat, coin like with no taper.

Continent based changes perhaps?

I think what looks like taper on @gencomm's photo is shadow?

 

All French to me. 😁

 

gencomm
Getting Established

Re: How to fix KS12-1 circular saw?

Hello Eric,

Sorry I am having a little difficulty in working out who is who... but I'll get there.

I have already done that. the tool specialist was polite but unenthusiastic. there was nothing to show me anyway. as packets were sealed and the appliances mounted and locked to displays. there were no spares to buy

I was not powering the machine up, but looking at the tolerances.

these seem to me to be ok....Except, as I said, the spring washer my have been overheated.

ps in spite of the photos looking like it is ready to go, the saw has not been operated.  I am aware of the issues that may be caused by high RPM, balance and the blade remaining integrated.

I think the problem might be solved replacing the bushes and spring washer

Are you able to provide me with part numbers and were I can purchase one from?

regards,

John

gencomm
Getting Established

Re: How to fix KS12-1 circular saw?

Hello Noyade,

Sorry I am having a little difficulty in working out who is who... but I'll get there.

I visited the Bunning's store to speak to someone. the tool specialist was polite but unenthusiastic. there was nothing to show me anyway. as packets were sealed and the appliances mounted and locked to displays. there were no spares to buy

In spite of the photos looking like it is ready to go, the saw has not been operated.  I am aware of the issues that may be caused by high RPM, balance and the blade remaining integrated.

I think the problem might be solved replacing the bushes and spring washer

Are you able to provide me with part numbers and were I can purchase one from?

regards,

John

gencomm
Getting Established

Re: How to fix KS12-1 circular saw?

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MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: How to fix KS12-1 circular saw?

Hi @gencomm,

 

Your unit has a warranty, and if the blade is not functioning, it would be best to submit the product to the Tool Shop team member for repair. We wouldn't be looking for them to assist you in diagnosing the issue; they simply take the product, a copy of your proof of purchase and details so they can send your saw to AEG to be repaired.

 

If you can let me know the store you'll be attending, then I can phone ahead to let me know you'll be in to drop off the tool.

 

You can order spare parts at your local store's Special Orders desk, but I don't believe there is an issue with the flanges or spring washer. Heat wouldn't have deformed the spring washer, and even if it had, it wouldn't prevent the blade from being clamped in position.

 

I'll run out to a Bunnings store today to take some pictures for you. I'm almost certain that either the inner or outer flange is in the wrong position or direction. I've dealt with dozens of slipping circular saw blades or blades that spin up and then stop when they touch timber. In all those instances, it was due to the flanges not being installed correctly.

 

Mitchell

 

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Re: How to fix KS12-1 circular saw?

G'day Mitchell@MitchellMc  and John @gencomm 

 

"I'll run out to a Bunnings store today to take some pictures for you."

 

That would be great. 👍

I do think John has the outer flange in the correct position based on his photo seen above.

And no taper.

 

John.PNG

 

I feel my eyes can discern the machined out circular area - that you see on the backs of other circular saw outer flanges...

 

20240821_141933.jpg

 

"In spite of the photos looking like it is ready to go, the saw has not been operated"

 

This is the bit I don't understand John. On the previous page, your blade looks well worn? A different blade maybe? And why then do you believe the spring washer has therefore "overheated?"

It has a spindle lock? With the lock engaged and the nut tightened - the blade freewheels without the spindle/nut/flange moving?

 

Is it a secondhand saw?

 

I look forward to @MitchellMc's investigation and findings! 😁

MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: How to fix KS12-1 circular saw?

Hi @gencomm,

 

Back from the store, no real mysteries were solved. Can I get you to check whether the rear flange is in place and orientated correctly as per the image below?

 

Apart from that, it doesn't look like it particularly matters which way the front flange is orientated.

 

Silly question, but are you engaging the blade lock button/lever whilst tightening the blade? It's the black lever directly above the bolt behind the blade guard. It depresses and locks the drive spindle in place so you can tighten the blade bolt sufficiently.

 

If we can't solve the issue here, it's best to submit the saw for a warranty repair.

 

Mitchell

 

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Re: How to fix KS12-1 circular saw?

Fascinating and frustrating.

Reading the manual on Bunnings, it indicates an arbor of 20mm for the KS12-1.

Below is not an AEG saw, but it is a 20mm arbor. If you flip the inner flange you create at least one new impossible situation. A new 'arbor' size is created of 28mm - hence the blade will no longer fit. Plus of course, it no longer makes contact with the drive system.

I can only imagine the same for the AEG.

 

20240822_145151.jpg

 

If I may be John's advocate - he must have the inner flange correctly installed - otherwise we wouldn't be seeing this on the previous page...

 

Once again.PNG

 

Tis all very odd.

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