Riding lawn mowers blades

It may fix the problem you just may have struck a stone with the blades and they are slightly bent downwards .~~

Don't pay any attention to what number or level it says on the mower. Set it for how high you want it to cut by doing a test cut. Many things can affect the mowing height. Air pressure in tires too low, yeah you got it your deck goes lower also.

You may need to take a scraper to the underside of the deck to get off all the compacted grass. If this collects too much it stops the discharge grass from getting thrown out.

Check your deck roller wheels to see if they are bent or missing. these wheels keep the deck from scalping the lawn.

One or more blades may be bent also.

i agree with garylee. you should immediately stop using the blades. i'm surprised you haven't burned the belt out. you can try squirting WD40 into the area above the blade housing to see it it may loosen that blade up. also squirt the wd40 (buy at any hardware store) it's used to loosen rusted parts. give it a good squirt from the top not from underneath the mower. that one bearing is rusted and sitting over the winter didn't help it any. each one of those units can be replaced separately. after squirting let the mower sit for a day or two. try moving the stuck blade before restarting the motor. remember to disconnect the spark plug or battery cables so the motor can't start up while you're turning the blade by hand. always keep that hint in mind when turning any mower blade by hand. good luck to ya

It sounds like the deck is unlevel in which case replacing the blade will not help. On craftsmans mowers the owners manual details how to make this adjustment. It's basically measuring the front and rear deck height and adjusting it to be level side to side with the front maybe 3/4 inch lower then the rear. Something of that nature. Also remember low air pressures can affect cutting height.

There are a number of reasons why you may be having this problem. If you have bent your blade(s) then obviously, replacing them will help. You may also have an issue with your cutting deck. Lift your deck to the highest cutting level and visually inspect your blades. If you have made an adjustment from levels 2 to 4 than there should be a significant bend in one or more of your blades (which you should be able to easily identify with a visual inspection).

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sharpen your blades.