Walker mower problems

Discussion in 'Mechanic and Repair' started by Mahoney3223, Nov 6, 2009.

  1. Mahoney3223

    Mahoney3223 LawnSite Senior Member
    from midwest
    Messages: 995

    So thank you in advance to anyone who provides useful information.....I have a 26 efi walker. It seems when you engage the blades on the pto (not electric) the gearboxes rattle like no ones business. It also seems it isn't revving high enough even though the throttle stop is hitting the nut that is supposed to stop it at proper rpm. None of these problems started until my moron employees let leaves build up in the exhaust and set the #$#$#$# thing on fire on the muffler area. I do not know where the fire was because I was not there. I know there is wires in that area but they do not seem damaged. Any help is greatly greatly appreciated. Thanks again
  2. DT Lawn Care

    DT Lawn Care LawnSite Senior Member
    Messages: 850

    You could be running on one cylinder. Start the mower up, and remove one plug wire, if it keeps running, put it back on and pull the other wire. If it keeps running, you're fine there.

    If one does cause the engine to die, run a compression test if you have a tester. If not, take the plug out, and turn the engine over to see if it sparks. This will tell you whether it is coil or wiring related or not. If it sparks fine, you have compression problems, either piston, rings, or valves most likely.

    If your cylinders are fine, I would check out the carb and fuel system, but my guess would be something in the cylinders. Keep us updated and good luck.
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Your post can be interpreted a couple ways,

    The way I read it the engine is reeving to speed "throttle stop is hitting the nut" but the deck isn't and the gear-boxes rattle.

    If that's the case and this is a front cut mower (no model numbers posted) check the drive shaft to T-box shear pin, Also make sure the shaft doesn't wobble around on the T-box input shaft. If it does both shafts may need to be replaced.

    If I interpreted wrong and the engine isn't running correctly proceed as DT posted, But check this shear pin anyway.
  4. Mahoney3223

    Mahoney3223 LawnSite Senior Member
    from midwest
    Messages: 995

    I checked out the motor...it's fine..it's running on both cylinders..no problems there...yes the second post would be more accurate. I Checked the shear pin and it is fine too. I pulled the covers off the gearboxes and added a little gear oil and I didn't notice anything broken, or metal frags etc.....It doesn't suck up enough, the cut is uneven the deck rattles...I'm lost..yes it is a MTGHS 26 EFI...Thanks for all and any input guys..appreciate it greatly.
  5. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Take a look at the driveshaft pin closer, There are two. One in the center is the shear pin the one closer to the edge is a safety pin to keep the shaft from sliding off while running should the shear pin break.

    If the shear pin is in-fact in-tact there could be gear issues inside the T-box, You could remove the end cover and inspect but all the oil will run all over the deck.
  6. Mahoney3223

    Mahoney3223 LawnSite Senior Member
    from midwest
    Messages: 995

    is there any definitive way to tell if the gear boxes are indeed junk?
  7. ericg

    ericg LawnSite Silver Member
    Messages: 2,792

    There is no true way to check the shear pin unless you drive it out of the joint. You can however perform this test: Raise the deck to 90 degrees and try and turn the blades. If the blades turn, the shear pin is broken. There have been a couple of posts relative to the Walkers uneven and sloppy cutting and most times, it ends up being the shear pin. The gear boxes on a Walker are pretty simple to inspect. The other thing to do is take the deck off of the machine and rotate the blades to see if you can hear any noises. Did you check the blower gear box for noise? If the blower gear box is going bad, the noise travels. One more thing, did you check the u joints on the drive shaft for excessive play? If the joints have excessive play, the shaft can bounce around and cause a rattling sound.

  8. Mahoney3223

    Mahoney3223 LawnSite Senior Member
    from midwest
    Messages: 995

    turned out the motor was not throwing high enough rpm..had to break down and take it in to my dealer..he adjust the throttle, replaced the governor spring and adjusted something else and now it runs like a r#ped ape!! thanks to all for the advice
  9. bligh61

    bligh61 LawnSite Member
    Messages: 240

    After poor cutting and uneven cutting I demoed a 48 deck, mine is a 42. The 48 deck sat a 1/2 inch lower on the same settings. I brought this to my dealers attention and Walker mfg is aware of the problem and is working on a solution. My machine is a 2009 26efi model. Does any one else have issues with the 09 walkers, I was thinking the new blower design or the new catcher design. Any opinions?
  10. Luke Reedy

    Luke Reedy LawnSite Member
    Messages: 75

    I have, in the past, noticed differences between decks as well. The solution was relatively inexpensive. Add washers underneath the deck pins to raise the height of the deck. They are cheap. Once you get the height even to your other deck you should easily be able to use both mowers in the same yard without any height differences. Good luck and start saving($3 worth of washers)

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