Briggs Stratton Lawnmower Lawn Mower Short Block
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I assume you have a blade mount that uses two bolts to connect the blade to the shaft.
Put the nuts on the top….facing the deck. If you put them down…..facing the grass they wear off quickly (after about 40 hours of mowing)
When they wear off they get rounded and you will have to use a locking pliers (visegrips) to get them off.
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This nut is a standard right-handed thread (rotate clockwise to tighten, counterclockwise loosen) and should be tightened to between 70 and 90 foot pounds of torque to fasten securely.
Most, if not all, mowers of this brand have bolts that are threaded in the normal direction, with blades in the reverse thread direction. This means that you`ll have to turn the bolt clockwise to the right to tighten it or turn the bolt counterclockwise to the left to loosen it.
Proper blade installation is essential for mowing. Whether you are sharpening an existing blade or installing new blades, proper blade orientation is very important. If you install a blade incorrectly, your mower may not cut properly.
Reverse thread fasteners are turned to the left to tighten, unlike regular nuts and bolts that turn to the right. Commonly used in applications where the continuous rotation of an assembly would cause a standard right-hand threaded fastener to unscrew, while a left-hand fastener remains securely in place.
Left hand threaded nuts, also known as reverse nuts, are not suited for standard bolts. They are installed by spinning counter-clockwise and are used with left-hand threaded bolts, screws, and rods.
Left-handed threads are also known as reverse threads. These threads are used in specialized applications in which the application of pressure would force a right-handed screw or bolt to come loose.
Most lawn mower blades have a round center hole that is used to connect the blade to the spindle.
The engine powers both the wheels and the blade, just like a walk-behind self-propelled mower. But instead of being directly connected to it by an axle, the blade on most riding mowers is powered by a belt connected to the engine.
Worn or broken blade drive belt – If the riding mower blades are not spinning, the blade drive belt may be worn or broken and unable to engage the blades. If the belt is intact, inspect it to see if it`s loose or slipping on the pulleys then replace it with a new one if necessary.
Generally speaking, the blade should be tight enough so that it doesn`t move around on its own, but you should be able to move with your hand by applying some pressure.
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The edger is not cutting very well. Any tips to make it work better?
ANSWER : You said cutting, not running, so I suggest removing the blade and sharpening on a grinder or buying a replacement blade.I hope you find this very helpful.
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I need to get the blade of the lawn mower sharpened.Any tips on how to disconnect the blade fropm the lawn mower?
ANSWER : There is a jig that you can buy that makes this job SO much eaiser. It is a universal jig that clamps onto the deck and keeps the blade from spinning so you can use a ratchet to remove the nut holding the blade on. One name brand is called a “Blade Hog”. You should be able to find one of these at one of the bog box hardware stores.
Hope this helps,
Chad
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How to change mower blades – Cub Cadet Riding Lawn Garden Tractor 25hp Kohler 50"
ANSWER : Fine a way to stop blade from turning, put a socket with long handle and turn countercock wise, some will need a wench on nut at top of shaft to stop blade from turning, torque to 60 # on most 50″ or lower width mowers
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I would like to replace the mulching blades on my Sears Craftsman riding mower with regular cutting blades. I can find plenty of sources for new mulching blades, but not cutting blades. My mower is a model 917.259541 tractor and the blades currently on it are part #134149. I want to make sure I get the right size to replace them. Also, is there a source for a bagging system for this mower, that won’t cost as much as one from Sears?
ANSWER : The straight blade for the 42 inch mower is 138971.They cut better and are easier to sharpen and you will need them if you use a gass catcher. If you do not want to use sears for parts you may be able to find good deals on ebay.
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How to change blade assembly on hedge hog 22 – Black & Decker 22 In Dual Action Hedge Trimmer
ANSWER : Are your blades dull, they can be sharpened. There is a good video on youtube by ereplacementparts where he shows you how to do it with a file and with a grinder.
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Blade moves back and forth,but won’t cut anything
ANSWER : Check the bolts or screws holding the blades together are tight but not so tight that they cant move. Ensure blades are sharp.
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Blades wont move when power connected. Stripped it down. Motor is fine. I think it must be the gears attached to the blade unit
ANSWER : Either the gears, OR SOME machines have a “CENTRIFUGAL CLUTCH” [a safety feature] between the engine and the blades.
IF your machine has this feature, then it’s possible that the clutch has worn out and is slipping so badly that the blade won’t move.
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Cannot remove mower blade pulley nut – John Deere 22HP VTwin 48" Riding Mower
ANSWER : I think its a left hand thread, you undo it clockwise (the “wrong” way)
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