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How do I mount the blade on Dewalt 7739? There is a distance piece, two cupped spacers, a nylon washer and a "washer" to change the blade diameter to fit the shaft. The shaft being small and the hole

How do I mount the blade on Dewalt 7739? There is a distance piece, two cupped spacers, a nylon washer and a "washer" to change the blade diameter to fit the shaft. The shaft being small and the hole in the blade is bigger. Thanks Dries

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  • Timllfixit Nov 16, 2014

    Hi, I've been on the Dewalt USA website and it doesn't recognise the model number you quote. Perhaps you could check that and go to dewalt.com and open the US section or your own country scroll through to parts info and manuals and see what you can dig out. Good luck.

  • Timllfixit Nov 16, 2014

    Hi, more news. Go to vintagemachinery.org they have an original owners handbook for your saw on free download. I didn't realise what you have is old gold. No wonder its not on the current Dewalt list. Hope this helps.

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Did you get a manual with it? If not go to www.manualslib.com and download one for a few bucks. The diameter spacer will likely go inside the blade ID and the cup washers facing cup inwards toward the blade, but without seeing it I can't say. See if there is a picture on "images" online.

Posted on Nov 15, 2014

Testimonial: "Sorry part of reply missing! I can't get an exploded view on any of the manuals online. Thx Dries"

  • Dries de Klerk
    Dries de Klerk Nov 16, 2014

    Exploded view. Yes the reducing spacer does go inside tha blade - problem is there is nothing to support and keep there. The question relates to a radial arm saw. Thx Dries

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I replaced the blade in the dewalt DW716 mitre, now the blade spins slow and trips my breaker??


Hello, W/D here.

Remove your new blade. With the hardware, bolt, washer,blade and cups off, try the saw. If it operates correctly, re-examine how the blade is installed One blade cup goes on, followed by the blade, then the other cup, followed by the washer and bolt assembly. If the cups were in the wrong order, the blade can drag against the frame of the saw, pulling too many amps, and tripping the breaker.
Here is a link to DeWalt. Enter your model # for manual download and exploded diagrams.

http://servicenet.dewalt.com/

Best regards, --W/D--

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Can you help me. My "trigger"


I was able to make my own by going to the local hardware store and buying 2 nylon parts and doing some careful milling/filling. The following dimensions were checked against an original EM14e trigger. These instructions may or may not work with other McCullough Chainsaws, but they worked for me!

1.) buy a nylon thumscrew with a 3.20mm (.125 in) outer diameter and 13.2mm (.5 in) THREADED length (overall length varies depending on type of flat head used for thumbscrew and overall total length will likely exceed 18mm or .75 in)

2.) a nylon spacer .25in length and .125in inner diameter that I cut in half and used a shop grinder to loosely fit onto a mounting nail. I used the shop grinder to gently mill down to 8.7mm outer diameter by slowly pressing the spacer/nail combo against the grinder wheel.

I then tested in the EM14E handle to check for fit and after several trips to the grinder for the spacer, it works great.

3.) After checking for fit I glued the thumscrew and spacer together and am now able to use the trigger. Please note if you have a working loose fit for the trigger, do what I have and simply use masking tape to keep the trigger with the chainsaw so it does not get lost.

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The diamond insert in the hub of the blade keeps falling out as soon as I start a cut. What is wrong?


DO NOT USE SAW!!!

1. switch off saw, remove cord from socket (positive electrical insulation)
2. lift table for maximum cut and check size of the washer holding the blade,
3. you should have holding nut with collar, collar is about 1 1/4 (32mm) diameter, then blade (diamond is actually universal reducing bush in some blades) and lastly you should have internal washer, again, about 1 1/4" (32mm) diameter. if your collar are smaller, you need to replace blade as not suitable for your particular model, albeit I am rather suspicious that you have wrong collared nut and internal collar. Please check if both collars are exactly this same diameter. Please check if collars cover diamond cut-out.
4. if you see discreptancy between description in 3, purchase suitable blade (external diameter is 7 1/4" (184mm), as you did not supply what model of your saw, therefore most probably shank is 5/8" (16mm),
5. mount internal bush (collar), will go correctly only in one way.
6. mount blade (pay attention to cut direction, cutting surface should be clockwise if you look at mounting shaft.
7. mount external flared nut
8. check blade for slippage and wobbliness
9. connect power cord and switch on/off
10. check saw blade againg for slippage/wobbliness
11. make test cut if 10 was correct
12. use normally

Do not forget that this is not a toy, it will cut through wood, ocassional nail and your fingers.

Opearating saw crate flying debris, always wear googles or facemask, you have only two eyes and there is no spares.

Please leave note how you go with this advice.

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Excessive viberation. Have taken the blade off and back on twice still the same viberation.


Check to be sure you are using the correct washer for the center mounting hole that fits around the center mounting bolt, and inside the universal mounting center hole of the blade and as well be sure that you use the washer that covers the inner spacer washer as well that secures the blade to a solid mounting that won't vibrate ( large washer on the center mount bolt First then the smaller washer that fits into the blades mounting hole and over the bolt )

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Reverse the order for installing the new blade. Make sure you use the proper size diameter blade (10 inch) and mounting hole in the replacement blade. Also, use the provided washer/spacers that were on the original blade and secure the nut. Spin by hand to see if everything clears. Mount the protective guard back on. Plug in the saw and test cut .

Good luck. If you are still unsure - ask a handy neighbor to help. It takes about 5 minutes to complete this task.

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Yeah I took mine apart and should have taken a picture of it before I did so. (Not too smart if I do say so.)
I'll put the steps here to assist, but here's a link to a small picture of it.
COMPLETE ASSEMBLY
The parts SHOULD go together in this order.
1. Start with wavy shaft standing on the plastic sleeve.
2. Slide the plate on the shaft.
3. Put the wheel on the plate so that it locks in place.
4. Put one of the rotating blades on the shaft so that it will cut in a clockwise direction. (as it is in the pic) Note that the rotating blades are offset slightly. I have no idea which order they go. Maybe first cut on the inside last cut on the outside. Dunno'.
5. Place one of the large nylon stepped washer with the 2 levels on the shaft with the smaller end facing up. (like the pic)
6. Remove the pin from the stationary blade holder as you will need one of those blades next. Remember how it was assembled or take a picture. :)
7. Place the stationary blade on the nylon spacer so that it will cut in a counter clockwise direction. (opposite to the direction of the pic above and toward the blade you already installed.)
8. Put a wavy washer on next.
9. Then put the angled plate thingy (I have nothing else to call it. It's called a damper in the link.) Place it on so that the edge is downward and the flat side it facing up. You want to place it like the picture on the left.
10. Another wavy washer.
11. Another one of the rotating blades in the same direction as the last one.
12. Place the other large nylon stepped washer on the shaft with the small end facing up like the last one.
13. Put the last stationary blade on in the same direction as the first one.
14. Another wavy washer.
15. Put the last angled plate thingy on in the same direction as the first one.
16. Another wavy washer.
17. The last rotating blade... Again in the same direction as the last 2.
18. Put the last washer with only one step on the shaft. (Looks like a top hat.)
19. FINALLY, put the lock washer on before you have a chance to knock it over and lose all the pieces :P
20. Put the blade anchor on the stationary blades in the same direction that you took it off. The pointier edge should be facing counter clockwise. You should only be able to slide the pin in place from the top. http://www.repairclinic.com/SSPartDetail.aspx?s=t-msd2351hew-%3d%3di375196&PartID=375196

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