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  1. #1

    Join Date
    Jul 2011
    Posts
    15
    Location
    Georgia
    Mower
    Husq YTH2448 and JD D110

    D110 - blades not engaging

    I have a JD D110. It starts up OK but when I lift the PTO lever to start the blades, nothing happens. As far as I can tell, the belt looks good but it's rather loose with the PTO lever down (this might be normal.) With the lever up, it's definitely not taut but, again, I'm not sure if that is the problem - I would assume that I'd hear something turning if it was a belt problem. I also don't see any disconnected springs.

    I watched what happens under the hood when the lever is raised and it releases a little switch which is marked with OJN. There's another OJN switch by the foot brake that only allows the engine to start up if it's depressed. I swapped those two over (they looked the same) but no difference in behavior.

    I think the battery is OK (12V with the engine off and 14V with the engine on) and I think the seat button is working (at least if I start the engine and stand up, the engine shuts off.) The 20amp fuse by the battery is good too.

    What is next to test? Feel free to be as basic as possible because I'm not an expert.

    Thanks

  2.  

  3. #2

    Join Date
    Jul 2013
    Posts
    867
    Location
    Georgia
    Mower
    John Deere

    Re: D110 - blades not engaging

    Is the belt tightening up any when you engage it? Have you adjusted the cable behind the pulley on the deck? My son is cutting the grass on my d110 as I type.

  4. #3

    Join Date
    Jul 2011
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    15
    Location
    Georgia
    Mower
    Husq YTH2448 and JD D110

    Re: D110 - blades not engaging

    thanks for responding.

    The belt does tighten a little when engaging but it's still loose-ish. Definitely not tight enough to turn a blade but I wasn't sure if there was another 'electric' piece that I was missing that would do the final tightening

    I have not adjusted the cable behind the pulley on the deck - not sure what that really means so I'll do some research on it :-) I'll start by going to HD and looking at the belts on the new D110s and how they change when the PTO lever is pushed up.

    TBH, I'd not really been looking at the belt since it was the first mow of the year and there were no problems on the last mow (6 or 7 months ago) but there was a lot of debris around the belt and it could have frozen and expanded and pushed the belt off something I guess.

  5. #4

    Join Date
    Jul 2013
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    867
    Location
    Georgia
    Mower
    John Deere

    Re: D110 - blades not engaging

    I would definately clean the deck off and make sure idler pulley is free.
    Adjusting belt tension- PTO lever has to be in OFF position. Behind left side(if you were sitting in seat) blade pulley cover there is a small bracket that holds the cable and the cable connects to a spring. There are two nuts(looks like small bolts to me) that holds the bracket to the deck. Loosen the nuts and move bracket away from center of deck to tighten belt tension. Move bracket until almost all slack is out of cable but cable is not too tight, then retighten nuts.

  6. #5

    Join Date
    Jul 2011
    Posts
    15
    Location
    Georgia
    Mower
    Husq YTH2448 and JD D110

    Re: D110 - blades not engaging

    thanks for the advice.. I'll have a go this weekend

  7. #6

    Join Date
    Jul 2011
    Posts
    15
    Location
    Georgia
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    Husq YTH2448 and JD D110

    Re: D110 - blades not engaging

    After two or three hours of frustration, I had success.

    I adjusted that tension thing as advised but it made no difference and the belt wasn't tight when the PTO lever was up. Everything seemed to be good so I removed the mower to clean it thoroughly and take a closer look.

    After removing and inspecting the belt I realised that the part that moves to give the belt tension was only moving about 1/4". I rattled it a bit and a stone fell out. After that, the part moved a good couple of inches. I put the thing back together, the belt was tight and all was working again.

    I doubt this thread is of much use to anyone in troubleshooting in the future, but if anyone reading is a tentative about removing the mower and to see whats going on, don't be - it's very straightforward.

  8. #7

    Join Date
    Jul 2013
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    867
    Location
    Georgia
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    John Deere

    Re: D110 - blades not engaging

    Glad you got it
    It must have been wedged on the idler bracket.

  9. #8

    Join Date
    Jan 2017
    Posts
    2
    Location
    California
    Mower
    John Deere D110

    Re: D110 - blades not engaging

    Quote Originally Posted by Mikel1 View Post
    I would definately clean the deck off and make sure idler pulley is free.
    Adjusting belt tension- PTO lever has to be in OFF position. Behind left side(if you were sitting in seat) blade pulley cover there is a small bracket that holds the cable and the cable connects to a spring. There are two nuts(looks like small bolts to me) that holds the bracket to the deck. Loosen the nuts and move bracket away from center of deck to tighten belt tension. Move bracket until almost all slack is out of cable but cable is not too tight, then retighten nuts.
    just happened to me today - 4 yr old D110 - cut acre of lawn today; just as I finished I heard a pop & blade would no longer engage. Lifted mower, cleaned out grass debris, no jams, both blades spin, no noise from bearings, belt intact but way loose. Looked like it jumped fence behind lt pulley cover. placed back behind, still no engagement. I'll go mess w the cable based on this PERFECTLY timeld tip.

    wish me luck

  10. #9

    Join Date
    Nov 2014
    Posts
    5,043
    Location
    Australia
    Mower
    Victa slashers & Push , Rover Rancher II's, Cox ( several ) & White LT120 + GT 200

    Re: D110 - blades not engaging

    Happens all the time but usual culprit is a chunk of small branch

  11. #10

    Join Date
    Jan 2017
    Posts
    2
    Location
    California
    Mower
    John Deere D110

    Re: D110 - blades not engaging

    Quote Originally Posted by bertsmobile1 View Post
    Happens all the time but usual culprit is a chunk of small branch
    Bert, never had it before. I have had instances where after throwing the PTO, it takes a count of 4 before engaging. Where typically do you find the branch?

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