Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1

    Join Date
    May 2006
    Posts
    4

    Default Need help on john deere L120 lawn tractor

    hi guys-i am having a problem. L120 is 3 years old and has 47 hrs on it. Starts up strong and runs that way for half hour then it just doesn't sound as strong and seems to bog down when cutting. i have given tune up and replaced fuel filter,fuel pump and i don't know what to do. i was gonna take it somewhere but didn't yet. any suggestions??? thanks

  2. #2
    Gold Member
    Join Date
    Aug 2002
    Posts
    475

    Default Re: Need help on john deere L120 lawn tractor

    First welcome aboard.

    You need 3 things for a good running engine, compression, fuel and properly timed spark. 2 things come to mind. Could be the spark coil overheating or loosing compression when warm.

    Give this a try. When cold, take the spark plug out and see what kind of spark you get. Run a compression test. Use it until you notice this 'bog down' condition. Recheck the spark and see if it is the same quallity of spark and retest compression. That should give you a direction to pursue to correct your problem.

  3. #3

    Join Date
    May 2006
    Posts
    4

    Default Re: Need help on john deere L120 lawn tractor

    Thank you Charlie. I will do that this weekend. hopefully is nothing major

  4. #4
    Silver Member
    Join Date
    Apr 2002
    Posts
    108
    Location
    South Central PA
    Tractor
    Kubota B7500 HST & Kubota ZD326

    Default Re: Need help on john deere L120 lawn tractor

    I've got the same mower and when I had 52 hours on it (now have 150) it would bog down just like your problem. Do this! Loosen the fuel cap while its running and see if its better. I'll bet it is!! My problem was that the fuel cap breather hole was plugged up. Just unplugged it with a piece of wire and all is well. Give it a shot. Sure won't take long to find out.

    Let me know how this works for ya!!

  5. #5

    Join Date
    May 2006
    Posts
    4

    Default Re: Need help on john deere L120 lawn tractor

    Thanks,i'll try that also.hopefully that's it.It still is a baby [img]/forums/images/graemlins/grin.gif[/img]

  6. #6

    Join Date
    May 2006
    Posts
    4

    Default Re: Need help on john deere L120 lawn tractor

    I finally found out its the iginition coil. the one plug has no spark. The other one is good. Is that a part i need to order or can i go in and pick one up??

  7. #7

    Join Date
    May 2006
    Posts
    4

    Default Re: Need help on john deere L120 lawn tractor

    I finally found out its the iginition coil. the one plug has no spark. The other one is good. Is that a part i need to order or can i go in and pick one up??

  8. #8
    New Member
    Join Date
    Nov 2008
    Posts
    1

    Default Re: Need help on john deere L120 lawn tractor

    Just a thank you for the heads-up on the gas cap vent plug clogging. This saved me a lot of bucks. The L120 would run for about 15 min just fine and then the engine started cutting out . Let it sit for a couple hours and it would start again. The manual has you check for clogged fuel filter and a couple other items. Tried everything in the manual and the engine still cut out after about 15 min. I finally read this tread and went out to the mower to try the gas cap. Soon as I unscrewed the gas cap and heard the vac release I knew you were right. Works great now.

    Thanks to all.

  9. #9
    New Member
    Join Date
    Jul 2009
    Posts
    1

    Default Re: Need help on john deere L120 lawn tractor

    I know these are old posts but right on anyway. I had same problem with L120 only mine has adjustable vent on cap which had become screwed all the way in. opened it and problem was fixed. Thanks much for the great advice.

    Jerry

  10. #10
    New Member
    Join Date
    Nov 2010
    Posts
    1

    Default Re: Need help on john deere L120 lawn tractor

    I need a belt for a John deere lawn mower M42485 I tried John Deere Mower Parts. Huge Selection, Top Quality & Best Prices! they seemed to have real good prices on lawn mower parts. Has anyone here tried them before. Is there any other place i can look?

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2013 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.