Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

3 Answers

I have a 14hp Craftsman riding mower, Model 917.257550. I cannot get the blades to disengage when I pull the lever. It will go down about 3/4's of the way and then wont allow me to continue to disengage completely. The blades keep spinning, so I have to shut the mower off to stop the blades, then I can't restart. What can I check or adjust to eliminate this problem? Thanks

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  • mchmielinski May 02, 2010

    I lubricated everything and it worked for about a few power on and offs. Now it's stuck again at about 3/4's disengaged. Which bars/arms/linkages should I be looking at that might be bent?



    Thanks

  • mchmielinski May 05, 2010

    I need a diagram of the linkage system for this mowerto understand what I'm doing. I can't tell what is what.

    Thanks

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3 Answers

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Could be that the safety switch under the seat has gotten unplugged or the switch that is attached to the blade engage lever is unplugged or has gone bad but quite unusual for the safety switch to go bad.

Posted on Aug 09, 2010

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One of the rods are binding against another metal item surrounding the adjustment. You will need to lubricate the adjusting rods so it will release as it did before

Posted on May 03, 2010

  • 6 more comments 
  • frank thomas wilson
    frank thomas wilson May 05, 2010

    Also check the tension release spring. I forgot to mention that for they do bind up as well

  • frank thomas wilson
    frank thomas wilson May 08, 2010

    http://userguides.50webs.com/Craftsman%2...

  • frank thomas wilson
    frank thomas wilson May 12, 2010

    I guess nothing was done as of yet. Did you remover the belt at all yet? If not try that and see if it works with it off. If not lubricate all moving parts and check the tensioner spring on the release arm. You have a binding item or rust causing this problem. I have owned many Sears riders and within 4 to 5 years they all had problems such as yours. I even had the belly of the blade cesction fall off from rusted gussets at the welds. After 25 years I switch to the John Deere brand. Cut 3 acres for 13 years without any problems with the exception of 2 oil changes per year and a new belt every 5 years

  • frank thomas wilson
    frank thomas wilson May 12, 2010

    I will search for a service manual for you

  • frank thomas wilson
    frank thomas wilson May 12, 2010

    Manuals on the web you can get

    http://userguides.50webs.com/Craftsman%2...

    http://userguides.50webs.com/manual.htm




  • frank thomas wilson
    frank thomas wilson May 22, 2010

    MTD manufactures this lawn mower. The guage steel they use is half as thick of what a John Deere has. The metal does get rusted up and gets weak at all points so purchasing a quality brand of penatrating oil and lubricating the entire mechanism would greatly help your problems with this. You may have to apply several applications to this to make it work. Using a wire wheel brush or a wire brush to clean off all access of clippings on all parts is recommended as well be fore lubricating it

  • frank thomas wilson
    frank thomas wilson May 22, 2010

    If you believe the rods are bent they can be ordered at Sears. They do not cost very much. You can never bend them back into the original shape unless you have a new one to go by. Once you have new ones save the old ones and bend them to match the new ones. Save them for the future or return the new ones for a refund if you get the old ones to operate fine

  • frank thomas wilson
    frank thomas wilson Jun 12, 2010

    You may need to get the blade deck off of this and clean it totally well to see what is binding. Usually the gusset the rods lock into will bind from wear to the inner brass bearing. If egged out of shape in the bushing the mechanisum can lock up on this mower

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The best way to do this is just lubricate all the slides completely. This unit will engage the blades by moving the pulley back and pulling the belt tight. If you look under your lever you will see a shift linkage, make sure nothing is bent or broken. Lubricate and tighten everything properly.

Posted on May 01, 2010

  • Alex May 03, 2010

    The only thing i can tell you from not looking at the unit is to follow the lever down to the linkage, make sure this is bolted tight and also make sure everything is straight. Then follow the linkage bars to the engaging pulley and make sure everything is tight and not worn or damaged. Dont be afraid to really spray some pentro oil or WD on the pulley or the linkage joints. Alot in never to much

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