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I need to replace one of my mower blades but can not brake to bolt loose. Which way does the bolt turn to remove blade?

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USUALLY bolts for mower blades turn the normal way, counterclockwise to loosen. Get a good box wrench, wear gloves, set the wrench so that it is almost in line with the blade and pull on the blade while pushing on the wrench. That should do it.

Posted on May 19, 2011


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How to replace plastic blades on a challenge mower

Dave, Remove plug wire, raise mower, or tilt on it's side to access blade. Remove center bolt holding blade on, noting the position so as not to install new blade upside down. Install new blade correctly and tighten blade bolt tight. Check the attached links,instruction and guides, Good luck
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What will cause blades on J.Deere G100 mower to Freely turn by hand without causing Spindles or belt to turn even though Bolts are still tight and when installed Blade turned only if spindle turned

Do Ray:
If the blade engagement lever is in the disengaged position, the belt will be loose, allowing you to turn the blades by hand. If you place the blade engagement lever in the engaged position (with the motor off) it will be hard to turn the blades because of the tension on the belt. If the blades are still easy to turn with the blade engagement lever in the engaged position, you need to replace the blade drive belt!

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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/...

1 Answer

Blade removal

That is because you need to hold the blade(s) still when torquing loose the blade bolts. Some of those are nasty to "crack" loose. But with the proper "6 point" socket (12 point is not recommended at ALL!) and leverage? Piece o' cake! Also craftsman does make a special tool to lock the blades down to remove them. There are also generic ones for riding type mowers (I've seen them at Lowe's) blade removal. Preventing the crankshaft from spinning is paramount to getting the blades off (Not to mention safe?) It depends on your level of mechanical expertise. Experienced? then you can do it, Not experienced? Go get the special tool to prevent the blades from spinning. Life is so much easier when you got the right tool for the job!

May 10, 2010 | Craftsman 21 HP 42 in. Zero Turn Tractor...

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Bolt comes loose and rip cord is yanked from hand

  1. block off the blade and driver assembly with a 2x4 to keep it from moving
  2. remove the flywheel nut (regular hand force should be sufficient)
  3. tap the 3 holes on the flywheel (if they aren't already threaded) using 1/4inch 20national tap set
  4. remove the flywheel using a flywheel puller -- a harmonic balancer puller which matches the tecumseh bolt pattern on the flywheel also works using 3 1/4inch thread (20national, 2inch long) bolts with washers
  5. NOTE: (if the blade was removed/reinstalled, tighten the blade to manufacturer's spec of 60lbs) before installing the new flywheel key
  6. remove the sheared flywheel key
  7. clean up the flywheel (wipe off all the dirt and grease)
  8. install the new flywheel key (part 611004 for toro 20016)
  9. install the flywheel (pull the bail brake handle to get the ball-brake inside the flywheel)
  10. tighten the flywheel nut to manufacturer's spec of 37.5lbs
  11. prime the gas bulb, give it a pull and mow away

Aug 24, 2009 | Toro Lawn Mower With Toro Power Tools

2 Answers

Craftsman riding mower blades won't disengage

This is too late, but for the next person: There is an extension spring around the cable attached to the blade engage/disengage lever.

On my tractor one end of the spring had the hook broken off or it. Because it is around the cable it is still in place but doesn't stretch when you engage the blade (so can't pull the pulley out and slacken the belt when you disengage).

The replacement is a few dollars and can be bought on ebay or Amazon.

Aug 15, 2009 | Garden

1 Answer

Cant remove blade on lawn mower

Follow directions. See if this works;

Blade Maintenance
�� Warning! Switch off, remove the isolator
key, battery and grassbox before adjusting
or cleaning.
�� Always wear gardening gloves when handling
or working near the sharp blades.
Turn the machine on its right side and inspect
the blade; if blunt or damaged, replace.
Use the following procedure to remove and replace
the blade:
Insert a screwdriver into hole 26 to lock the
drive. Hold the blade 30 using gardening gloves
(not provided) and use a spanner (not provided)
to remove the blade bolt 29, blade washer 28
and blade 30.
Fit the blade 30, blade washer 28 and the blade
bolt 29. Ensure that the blade is the correct way
up (so that this symbol can be seen located
as in figure I) and tighten the bolt 29 firmly.
Ensure the screwdriver is removed before attempting
to turn the machine on.

If this procedure does not work then try the following;

It is not uncommon for the blade bolt to become seized onto the shaft due to all the gunk and moisture on the underside of the deck. Try to soak the bolt several times over with penetrating oil ( WD 40, PB Blaster, etc). Spray the bolt head, the top of the blade where it contacts the shaft, etc. Do this several times and let the penetrating oil soak in. Hit the bolt head gently several times with a hammer to loosen up the corrosion. Then try to remove the bolt per directions.
Hope this helps, if so Please rate, Thanks, and Good Luck!

Aug 02, 2009 | Garden

1 Answer

Can't get bolts loose on mower blades

The bolts that hold the blade need to be turned clockwise.

The bolts holding on the deck need to be turned counter clockwise

Jul 29, 2009 | Garden

1 Answer

Change rotory blade on craftsman 917377794

This is a nice mower, it has a Honda engine. The blade bolts onto a "blade brake clutch" which is why you see 3 bolts. Removing the two outer bolts should release the blade. Normally these bolts are about 1/4" to 5/16" diameter at the threads, and have split washers to prevent them from accidentally coming loose from vibration or impact.

Here's the steps I use when replacing the blade:

  1. Pull the spark plug wire off the spark plug.
  2. Lay the mower over on it's side (gas filler cap should be up, so whichever side allows the gass filler cap to end up on the high side of the engine).
  3. Find a wrench that properly fits the blade bolts.
  4. If right-handed; wearing a garden or protective work glove on the left hand, grasp the blade.
  5. Unbolt both bolts by turning in a counter-clockwise direction (left circular direction).
  6. Remove the bolts being sure not to lose the locking washers.
  7. Pull the blade off the blade mount (sometimes a light tap is necessary to loosen the blade from the blade mount).
  8. Replace the blade with the exact Sears part number (diagram and parts list attached below).
  9. Thread the bolts back on using your fingers to get them started - don't force them if they start to bind or you'll cross-thread them; bad thing).
  10. Snug the bolts down tight, sufficient to compress the locking washers flat.
  11. Don't overtighten, they need to be tight, but if you use a long handle wrench or ratchet drive you can cause them to break or fail while the balde is spinning, another bad thing. Tighten them snug assuring the washers compressed flat.
  12. Turn the mower back upright onto its wheels.
  13. Replace the spark plug wire back onto the spark plug.
  14. Leave sit for 30 minutes before starting to assure the oil has returned level in the engine before you attempt to start the engine.
Here's your diagram and parts list:,-Walk-Behind-Lawnmower&diagramPageId=00001&componentDescription=ENGINE/HOUSING/HANDLE/BAG/BLADE&documentId=P0401287&backToLink=Return%20to%20Sub%20Components%20list

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Apr 02, 2009 | Garden

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