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While mowing the drive belt tightner spring broke. I bought a replacement but the blades will not engage. The drive belt has been routed properly. it seems as though the blade's drive shaft will not spin.

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While you are checking the shear pin, check the blade drive shaft bearings and the the tightener pulley bearings. If a bearing seizes it will "snap" the belt and possibly break the spring.

Posted on Mar 30, 2015

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Check and see if the shear pin has broken. If the pulleys spin but not the blades then the shear pin in the pulley or shaft has broken.

Posted on Mar 30, 2015

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Posted on Jan 02, 2017

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SOURCE: blades became disengaged -- won't engage

Sometimes the belt can jump off one pulley and cause the problem,follow the belt around all the pulleys and see if it came off one.there may be a belt loosening lever on the lh side of the mower deck, if so unlock it and reroute the belt around the pulley. If you need to replace the belt the manual has a good description on how to do it and should take 30 min with only a couple of tools.

Posted on Jul 30, 2009

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SOURCE: huskee model 287707 blades wont spin belt not broke or spinning?

check for power and ground at the connector that feeds the clutch this will tell you if its a switch or the clutch itself

Posted on May 25, 2012

philwalker78
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SOURCE: craftsman lt 2000 42

Hi, first check the spring that pulls on the idler pulley for lost tension then run the blades for a 10 to 15 minutes at half to full throttle. This is necessary to bed the new belt into the old pulleys. Regards Phil.

Posted on Sep 06, 2012

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I need help putting rear end back together on a 10 hp30 Murray riding lawnmower


Safety and Preparation Serious injury can occur if the engine or mower blades accidentally start while you are working with lawn tractors. To prevent this, drive the Murray lawn tractor onto a flat work surface and disengage the mowing deck cutting blades. Engage the parking brake to keep the mower from moving; chock the wheels with a wooden block or brick. Adjust the mowing deck to the lowest position. Turn off the engine and remove the key from the ignition. While not necessary, you may even wish to disconnect the spark plug wire from the spark plug. Mowing Deck Removal You must remove the mowing deck on a Murray lawn tractor to gain access to the belts. Remove the adjustment rod hairpins, followed by the adjustment rod pins from the front left and right sides of the mowing deck. At the rear on the left and right sides, pull out the retaining hairpins and slide the mowing deck suspension links from the adjuster plates to separate the rear mowing deck from the frame. Remove the blade control rod stud, including the hairpin and washer, from the top of the blade control lever shift linkage at the left rear of the deck. Remove the front hanger rod, including the hairpin and flat washer that hold the rod in place. Loosen the belt guide retaining bolts with a socket wrench and remove the engine stack pulley belt so you can slide the mower deck out from under the tractor Transmission Drive Belt Installation Slide the new transmission drive belt between the engine stack pulley belt guides, over the belt guide plate and under the engine stack pulley. Fit the transmission drive belt around the top engine stack pulley. Push the free end of the transmission drive belt up through the transmission shifter hole in the lawn tractor floorboard. Slip the transmission drive belt loop over the transmission shifter. Pull the transmission drive belt down through the transmission shifter hole. Fit the transmission drive belt around the transmission drive pulley and tighten the transmission drive pulley belt guide retaining bolts to hold it in place. Fit the transmission drive belt flat side around the idler pulley. Slide the idler pulley onto the idler pulley stud while holding the belt in place. Tighten the transmission idler pulley retaining nut with a socket wrench to secure the idler pulley to the idler pulley stud. Mowing Deck Drive Belt Installation Pull back on the right side mowing deck mandrel pulley spring-tensioned belt retainer. Guide the new mowing deck drive belt around the right side mandrel pulley and release the belt retainer. Pull the drive belt spring-tensioned retainer away from the mowing deck idler pulley, guiding the deck drive belt around the idler pulley. Fit the mowing deck drive belt around the left side mandrel pulley and under the rear mowing deck cross link rod between the right and left side mandrel pulley. Slide the mowing deck under the right side lawn tractor frame, reconnecting the deck to the frame in reverse order of removal. Engage and disengage the mower deck while driving the mower to test the belt for proper operation.

Sep 28, 2016 | Murray Garden

1 Answer

When running the mower, it shuts off immediately when trying to engage blades(pto)


Hi Digger:
I've two possibles come to mind for you to check.
1) Engine OFF - Make sure that all of the blades and pulleys can turn freely.
2) Engine OFF - Double check belt routing. Move engage lever ON/Off and look at what movement happens. It may be that the belt is on the wrong side af a mounting flange and binds when engaged.
Cheerfuls.

Sep 18, 2015 | Garden

1 Answer

Blades stopped mowing, still runs. What's the issue?


Most likely your belts either came off the pulleys or broke also tension spring may have broken or disconnected ,,with the engine shut off check the main drive area first..then follow back to the deck..if the Belts are in place with the blades engaged check for tension..if none the tension spring or worn belts is the problem..good luck.

Aug 22, 2015 | Garden

1 Answer

Craftsman lt 2000 42


Hi, first check the spring that pulls on the idler pulley for lost tension then run the blades for a 10 to 15 minutes at half to full throttle. This is necessary to bed the new belt into the old pulleys. Regards Phil.

Sep 05, 2012 | Garden

1 Answer

Huskee model 287707 blades wont spin belt not broke or spinning?


check for power and ground at the connector that feeds the clutch this will tell you if its a switch or the clutch itself

May 23, 2012 | Garden

3 Answers

PTO WHEN PULLED DOES NOT ENGAGE....BLADES DO NOT START...


Check your mower deck spindles and belt. If belt is slipping at all the PTO will not engage.

May 10, 2010 | Cub Cadet Lawn Mower Blade Drive Belt CUB...

1 Answer

The blades wont engage when the button is pulled to start them.


If the mower drive belt is extremely loose the spring that holds it tight may have broken,check to see if it is broken before you replace the belt

Aug 18, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Mowing


I did the same thing. I replace the belt that turns the blades. The pressure of the impact had stretched the belt and was slipping on the pully that engages the blades. Try that first and check the other belts for tension, wear and condition....Also make sure all springs are attached, not stretched, and in good shape...Hope this is helpful....Joe

Dec 08, 2008 | Husqvarna 22 Hp 46" Deck Yard Tractor

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