Why is mower making sound like blade hitting deck?

You need to replace the blade clutch cable that runs between the blade engagement lever just to the right of the steering wheel and the the spring to the idler/clutch wheel on the top of the mower deck. Over time the cable binds in the sleeve/cable jacket preventing the blade from disengaging

check your spindels on the mower deck sounds like they are going bad if you dont fix it it will overheat the engine .

hello, hello, Drive belt replacement for front drive mowers. remove the belt coved on top of deckand clean out grass,turn mower on side where carb is facing up,use a pair of vice grips on side of mower deck so the blade can stop,remove the blade,remove the belt cover and clean out the grass,remove belt from rear and front pulley pulleys. install new belt,put belt cover and blade back on,put front belt cover on, should work,if that is not the problem; wheels will not prepeal the mower,wheels turn only when raised off ground, Check the gears or groves on the inside of the wheel for access wear that is a common problem,check the axle drive gears to make sure turns ok, to check gear box if ok pull mower back wards while drive is engaged,if wheels turn backwards than the trams is bad,all of this is caused by the operator,by not disengaging drive while pulling mower backwards or by holding mower back not allowing to propel self completely,hope this helps,any comments welcome,thank you.

it sounds like the deck and or the belt needs to be adjusted and aligned. 1st make sure mower is OFF and blades are disengaged. check to make sure the deck/blades are free of harden grass, twigs, branches, and that they are free moving. 2nd make sure belt is in its correct path. 3rd make sure the deck can be lowered and raised without obstructions 4th make sure no parts have been bent and the pulleys are parallel to the deck and the deck is not cracked or broken by the blades hitting something hard and the deck being damaged. 5th the belt adjustment needs to be tight but not over tightened (see a service dealer).
hope this has been helpful. contact me if you need further help.
Thank you.

Hello,

I am guessing that this was posted in wrong category.

You mention that you have to keep pushing / letting go of the accelerator. Is the engine RPM changing, or is the tractor surging, when you do this? What happens if you keep a steady pressure on the pedal? Isn't the throttle control via a lever on the panel?

Your uneven blade height can be caused by a multitude of issues.
1) If the spindles were changed, the wrong spindle may have been used on one side or the other.
2) The wrong blade adapter has been used on one of the spindles.
3) Mower deck has been bent
4) Mower deck is binding. Try raising it all the way up, and lowering all the way down. See if the uneven cut changes at both levels (all up or all down).
5) Blade is bent on one side, though this would usually cause such a ruckus and vibration it would be quite noticeable.
6) Belt is slipping. Yes, sounds strange, but if blade speed changes significantly, then the position where the grass is actually cut changes because the grass can "lean over" more.
7) Using a mulching attachment in tall grass can cause 1 blade to clog, and the cut grass that is swirling bends over other grass that needs to be cut.
8) Mower deck support bracket has been bent
9) Mower deck wheel has a bad bearing, and doesn't support the deck at same height as other side.
10) Mower deck is cracked / bent at a support location
11) You have lost a retaining pin at a support bracket and the bracket is loose.
12) A spindle's bearings are worn out, and the spindle is "jumping" as it turns.

If the blades are directly beside each other where they blades will overlap, it is normal for a small amount of height difference to occur. But, most decks have off set blades, one slightly in front of the other.

you should be able to raise the deck all the way, and pull the tractor's front wheels up onto something (landscape timber?) to get more access, then measure blade height in relation to bottom of the deck. If different, then you are looking at wrong blade / adapter or a spindle issue. If the blades are the same height, then you are likely looking at a deck support issue / binding in linkage.

The engine wont have an impact with the deck because its belt driven. It sure sounds like you have a bad set of spindle bearings,just turning it by hand you wont hear any noise it has to be going fast to hear it. The noise may be coming from your clutch instead of the deck,and it sounds like the deck. Have these things checked out.

It sounds like your blade is hitting the ground when you are mowing.If you have high spots in your yard the blade will cut into the ground and the mounts on the mandrel will break. Make sure the mower rake adjustment is set correctly,the mower blade should be level or a maximum of 1/4 inch lower in the front.This adjustment is done with the adjuster bolt that runs from the front of the mower to the frame under the muffler, it may have one or two rods connecting the mower at this point. Also make sure the wheels are set down far enough so they can prevent the deck from scalping,they have five different mount holes,if they are up in the highest they will not do anything.Unfortunately these mower mandrels will not take a lot of punishment and they can break when the blades contact anything like dirt or tree roots. Your ultimate action may be just to mow the grass a little higher to keep from scalping. Hope this helps.

Make sure the mower rake angle is not too much,On level floor point one of the blades in a front rear orientation,measure height of blade from floor the front measurement should be no more than 1/4" lower than the rear measurement.If the front of the mower is too low the angle the belt has to run is too much and the belt will twist and wear rap[idly.To raise the front of the deck there are either one or two adjustment rods that attach the front of mower deck to frame tighten this adjustment up to raise the front of mower deck.

check your front tire air pressures

Have you always had this problem?
Have you had the blades off to sharpen?
Could the blades have been mistakenly put on upside down ?
The turned up piece goes toward the deck
Check your deck hangers to be sure they are free and not binding anywhere and to be sure they are dropping as far as they can go in the lowest deck setting.
your deck should move up and down evenly as you lower and raise it.
Unless spacers are an option for this cause i wouldnt use them.
Check the tire pressure 14 psi front 10psi rear .

hope some of this helps for you