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HOW TO REMOVE MTD BLADE ADAPTER AND INSTALL NEW BLADE ADAPTER KIT 753-0609 on shaft for 21 in. MTD model 759 mower?

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Remove the blade bolt and blade, slide the adapter off the crankshaft. If it will not slide off, spray it with a good penetrating oil and let is soak for a bit then take a SMALL hammer and gently tap on the sides of it while pulling at the same time. Slide the new one back on and repklace blade and bolt(s)

Posted on Sep 14, 2009

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Daren Ingold's suggestion works only for the right rear wheel on my 19+ year old MTD Yardman 21" self propelled mower. The ratchet spur on rear left wheel is held on by a bolt in the center of the axle and a spline. Remove the center bolt and washer. Pry the ratchet spur off the spline by using three medium blade screwdrivers wedged between the wheel and the spur gently tapping the three screwdrivers in succession until the spur is half off the spline. It will come off easily after that. Remove the spur, noting direction, and remove the wheel and replace it with one of the front wheels (they're all the same design) if it is in better condition and use the rear wheel for the front. Good luck ever finding a new replacement for this particular wheel. My mower is 19+ years old but runs perfectly otherwise. Stored in dry basement.

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I NEED TO KNOW HOW THE BLADES GO ON A 21' SELF PROPELLED MOWER THAT IS A MULCHER


Most lawnmower blades simply attach with a bolt through the blade which bolts into the bottom of the crank shaft. The blades usually have a curve at the end of the blade, and this curve would point up when properly installed. If you post the model number of the machine, I can probably point you to a schematic which will show exactly how your blade mounts.

Tim

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1 Answer

Blade shear pins broken how do I replace


Remove the spark plug.

Remove the blade retaining bolt, compression washer, and blade.

Most of the time the adapter just comes out.

Occasionally I have had to use a small hammer to tap it off of the shaft. Tap it in several places being careful not to damage the crankshaft.

A few, I have had to return the retaining bolt to the shaft leaving about a half inch between the bolt head and the adapter. I could then use a puller to remove the adapter. (WARNING! If you are not very careful, the puller can easily damage the retaining bolt and the crankshaft ruining the threads.)

NOTE: If you have a reliable slide puller, it's better to use that versus a compression puller.

Rarely have I had to cut the adapter away from the shaft. Only had to do that twice. (One was because the adapter and crank had corroded together, and the other the key sheered before the pins.)

Best of luck.

Sep 25, 2011 | Mtd 22" Yard Machine Push Mower

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Mower blade is spinning loose is not connected to motor. did a stud brake cause not is tight


Don't ever run a mower with a loose blade. Most push mowers have a blade adapter that slips over the engine shaft and allows the fastening bolt (and it should be a special hardened one with 6 lines on the head of it) to thread into the end of the crankshaft. The adapter could have slipped and needs to be repositioned on the shaft so that the blade can be properly tightened.

May 07, 2011 | Kelty Yard King 21" Push Lawn Mower w/...

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Pull rope cord on Yard-Man Mower, gets to a point and seizes. Can turn through it by hand with blade but still stops at that point each time with cord


My mower had the same problem. There was some dirt or debris built up on one side of the blade drive shaft, but once I shot some oil onto the shaft and turned the blade a few times by hand, it ran good again.

Hope that helps!

Apr 28, 2010 | Mtd Yard - Man 160cc, 21" Self - Propelled...

1 Answer

MTD bsgger/Mower 21 self propelled only number 1183AC.Need part that mower blade is attached to then to drive shaft. Can't find


Hi and welcome to FixYa. I am Kelly

The part your looking for is called the BLADE ADAPTER. The part number should be: 753-0588

These are available at most any lawnmower repair / parts store. If you walk in woith what is left of your old one they can sell you an exact replacement. I am kind of old school when it comes to blade adapters. I always match old with the new before I buy them. I have been burned too many times from on line sites mainly with blade adapters. Most anything else available on the net is fine.

Here is a whole page of adapters:

http://www.lawnmowerpros.com/MTD/MTD-Blade-adapters.asp

Thanks for using FixYa.

Kelly

Apr 02, 2010 | Garden

2 Answers

How to remove old and install new blade adapter (753-0609)model 759 on MTD mower--


Remove the blade bolt and blade, slide the adapter off the crankshaft. If it will not slide off, spray it with a good penetrating oil and let is soak for a bit then take a SMALL hammer and gently tap on the sides of it while pulling at the same time

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Middle blade in 3 blade mower for ride on does not seem to cut?


Raise the deck and reach into the bad blade and try and turn it. If it turns easily then try to wiggle the blade up and down. If it moves up and down then the bearings are bad. You will have to remove the shaft and install new bearings. It is best to take it to a shop that can replace them. If you try and beat them off with a hammer you will probably mess up the shaft. I know from experience. You might be able to buy the whole new shaft with bearings already installed pretty cheap. Just find your part number and go to www.jackssmallengines.com and input the part number into the search box. They have reasonable shipping prices. You can also go to your local small engine repair shop they might even have free shipping.

Good luck and let me know if this helps.

thanks
roundo4

Sep 06, 2009 | Mtd Garden

1 Answer

How to correctly replace blade adapter


1) Put a little anti-seize on the engine shaft where the adapter goes.
This will make it easier to remove should you need to in the future

2) Align the built-in key with the key slot on the engine shaft.
Slide the blade adapter on as far as it will go.

3) Put the blade on the alignment hub of the adapter (the star).
Make sure that you have the blade on properly (Angled side of
the cutting surface toward the bottom of the engine)

4) Install the bolt and torque to 60 ft lbs

I don't think that you received a faulty part. From what you described above, you had it installed correctly just not tight enough
I used to see these all the time when I had my shop and it was due to not having enough torque on the blade bolt. The bolt will vibrate loose in no time if not tightened enough.

Hope this helps you!

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