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Do the mower blades need to be engaged in order to see if I need to adjust the tension on the drive belt? Ariens riding mower.

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Kyle DeLory

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  • 18 Answers

With the lawnmower not running engage the blades, now you can use your hand to check the amount of tension as no parts should be moving so you won't have to take a trip to the er after doing so

Posted on Apr 24, 2019

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5 Related Answers

Joe Hogan

  • 10865 Answers

SOURCE: I have a craftsman riding lawn mover 42" model #917270812

Hi Paul It sounds like the belt is worn, stretched, or possibly just two long for your machine. Save yourself a lot of aggrivation by checking your operator manual and getting exactly the right belt for your mower.

You don't say how old your machine is but if it has been mowing for many, many hours, the tensioning spring may need to be replaced. If that is the case you can order a new one at Sears.com

Posted on May 20, 2009

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rjivaro

  • 158 Answers

SOURCE: BELT ADJUSTMENT

There is an idler pulley near the drive pulley under the engine. It is made of plastic and is a common failure. It freezes up and doesn't want to let the belt move. Have you noticed the smell of hot/burning plastic? You can replace it with an original, but it is still plastic. Metal replacements can be had. I think I got some from mcmaster.com so try there. They are a great resource. Shipping is fast and inexpensive and they have everything a guy could want.

Posted on May 28, 2009

Anonymous

  • 15 Answers

SOURCE: BLADE DRIVE BELT ADJUSTMENT

Well, most riding mowers have a "pully idler", meaning once you have the belt on there (and it is the RIGHT size), the idler automatically gives the belt tension when you engage it (in fact, the idler pully is what IS engaged when you engage the belly mower).

Couple things to check (super simple):

The Belt. Look to see if she is wore smooth out.
Sometimes....they WILL stretch on you, instead of busting/coming apart, and give you noise (when she is engaged, but wore out enough to flop around a little)

The Deck Blade Bearings. Straight away, that is what it sounds like, or bent blades.

Check your Blade Bearings (super simple):
1. Pick up your deck to the highest high setting (mower off, just sitting).
2. Reach under, and grab your mower blade (do this for both sides), and TILT your blade UP (meaning, don't LIFT the blade straight up).
Seriously, jiggle it at a TILT. If you feel some slack in the bearing, the bearing IS shot. Straight up and down is most of the time OK, IF it is VERY little play on your blade bearings. As you do it, look at your belt pulley directly on top, if you see that pully bobbing....

However, if you grab one side of the blade only, then tilt the blade up, and she moves.....
Bearings need replaced, both the upper AND lower bearings PER blade.

They are not hard to replace, and not expensive either! (Though unfortunately, most are "sealed" junk nowadays!)

Bad Bearings show up (make themselves known) in only a few ways: Tons of Noise (grinding, squealing) & Vibration.

Go check them thar Bearings!

Posted on May 28, 2009

wadembly

Wade Mobley

  • 513 Answers

SOURCE: Craftsman riding mower blades will not engage

maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety

Posted on Jun 28, 2009

waynepwelker

waynepwelker

  • 25 Answers

SOURCE: I have a troy bilt riding mower blades will not engage in the 1 or 2 deck setting

There is a spring attached to a tensioner that probably came unhooked while changing the belt. Higher deck settings push the deck backwards enough to spin the blades, the lower setting need the spring tensioner to take up the slack in the belt.

Posted on Jun 27, 2012

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1 Answer

Zt2560


Remove blade drive belt. turn each blade by hand. Sounds as if you have bearing problems. Each spindle has an upper and lower bearing of the same size. They are notorious for going out! You can get them at most any auto parts store. Also check the tensioner pulley bearing. They go out quite often. As for the jerking, make sure the two drive disengage rods are fully in. Check tension on drive belt and belt. These belts get worn quickly. Be sure to blow the trash and dirt from your mower after each use. Especially the Hydraulic motors and the mower deck. This will save you lots of trouble. If you wash the mower, be sure and run the blades and Hrdroes to get water dried from bearings and pulleys and belts.

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2 Answers

Why won't the blades engage on my Ariens 911403


Chances are the deck drive belt has been knocked off one of the pulleys or the drive clutch won't engage properly. With the spark plug wire removed, rotate the blades by hand and make sure they both move together. This verifies the blade linking belt is OK. Now engage the blade operating control and feel for resistance as you rotate the blades. If you feel no change in resistance, remove the belt cover and reinstall the drive belt over the pulleys and tensioner/clutch mechanism.

May 31, 2014 | Ariens 34 In. Zoom Series Riding Mower

1 Answer

How to adjust a loose mower deck drive belt?


check your pulleys to make sure they haven't split as this does happen. Adjust the belt tensioner to tighten the belt when you engage the clutch to drive the mower. You should be able to see the belt tensioner by dropping the cutting deck to its lowest point and looking underneath the mower to see which pulley actually puts the tension on the belt to make it drive. there is no need to start the mower to find which pulley needs to be adjusted, it should be obvious when you look at the belt and the pulleys.
Hope this helps you

May 17, 2014 | Garden

1 Answer

When I engage the blades nothing happens. Any ideas?


I have a YTH 150 with a similar problem. The mower has an electrically powered clutch which is activated when you engage the blade button. If the drive belt has no tension on it, engaging the clutch doesn't do anything because the drive wheel will just spin but the blades won't. Look for broken tension springs on the mower deck and replace.

Jul 05, 2011 | Husqvarna Riding Lawn Mower Yth24v48ls 48...

1 Answer

Belt systme view - how all belts are hooked up


you have 2 pulleys going to the blades, 1 pulley coming from the pto, and a belt tensioner. the belt goes on the outside of the pto, outside left side blade, inside belt tensioner, out side right side blade.

Aug 16, 2009 | Ariens 34 In. Zoom Series Riding Mower

1 Answer

BLADE DRIVE BELT ADJUSTMENT


Well, most riding mowers have a "pully idler", meaning once you have the belt on there (and it is the RIGHT size), the idler automatically gives the belt tension when you engage it (in fact, the idler pully is what IS engaged when you engage the belly mower).

Couple things to check (super simple):

The Belt. Look to see if she is wore smooth out.
Sometimes....they WILL stretch on you, instead of busting/coming apart, and give you noise (when she is engaged, but wore out enough to flop around a little)

The Deck Blade Bearings. Straight away, that is what it sounds like, or bent blades.

Check your Blade Bearings (super simple):
1. Pick up your deck to the highest high setting (mower off, just sitting).
2. Reach under, and grab your mower blade (do this for both sides), and TILT your blade UP (meaning, don't LIFT the blade straight up).
Seriously, jiggle it at a TILT. If you feel some slack in the bearing, the bearing IS shot. Straight up and down is most of the time OK, IF it is VERY little play on your blade bearings. As you do it, look at your belt pulley directly on top, if you see that pully bobbing....

However, if you grab one side of the blade only, then tilt the blade up, and she moves.....
Bearings need replaced, both the upper AND lower bearings PER blade.

They are not hard to replace, and not expensive either! (Though unfortunately, most are "sealed" junk nowadays!)

Bad Bearings show up (make themselves known) in only a few ways: Tons of Noise (grinding, squealing) & Vibration.

Go check them thar Bearings!

May 28, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

I have a craftsman riding lawn mover 42" model #917270812


Hi Paul It sounds like the belt is worn, stretched, or possibly just two long for your machine. Save yourself a lot of aggrivation by checking your operator manual and getting exactly the right belt for your mower.

You don't say how old your machine is but if it has been mowing for many, many hours, the tensioning spring may need to be replaced. If that is the case you can order a new one at Sears.com

May 20, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Disc drive slips under load & you have to jam shift arm to go rev


Check the tension on the belt tensioner....check to see if the belt guides are not under the belt anywher, rather over the top with 1/4 in clearance.....(the guides are just metal round bars either welded on or they are put on with a bolt (eye on the guides)
If the tensioner does not clear away from the belt, that would be why it shifts hard.

Apr 06, 2009 | Ariens Garden

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