Results 1 to 5 of 5
  1. #1

    Join Date
    Sep 2018
    Posts
    2
    Location
    Chile
    Mower
    John Deere

    John Deere LA135 (LAWN TRACTOR MOWER)

    What is the minimum CRANKING RPM at whch the plugs will fire (Spark)? Cheers.

  2.  

  3. #2

    Join Date
    Nov 2014
    Posts
    10,183
    Location
    Australia
    Mower
    Victa slashers & Push , Rover Rancher II's, Cox ( several ) & White LT120 + GT 200

    Re: John Deere LA135 (LAWN TRACTOR MOWER)

    It will depend upon the strength of the magnets, the distance the coil is from the magnets, the resistance in the spark plug ( thus the gap ) and the condition of the plug & HT wire.

    Now if you have a problem list it plus the engine maker & numbers & we will see if we can help you fix your mower

  4. #3

    Join Date
    Sep 2018
    Posts
    2
    Location
    Chile
    Mower
    John Deere

    Re: John Deere LA135 (LAWN TRACTOR MOWER)

    Quote Originally Posted by bertsmobile1 View Post
    It will depend upon the strength of the magnets, the distance the coil is from the magnets, the resistance in the spark plug ( thus the gap ) and the condition of the plug & HT wire.

    Now if you have a problem list it plus the engine maker & numbers & we will see if we can help you fix your mower
    ranke

    Thanks for the reply.......
    I cranked the engine with an electric drill & 32mm socket (plugs out!) and obtained a healthy spark at both plugs..... I then removed the starter & sure enough, it was well below speed due to to two of the brushes being stuck in their holders, one +ve side , the other on the-ve side.... due to overheating of the plastic brush holder, so assuming that is the cause of "low cranking speed".
    I was a bit mistified as the speed seemed adequate, but on the other hand, this is a two cylinder B&S ....I am more familiar with the single pot B&S models.
    Now the owner is shocked at the quoted replacement price!
    Cheers.
    Steve.

  5. #4
    LawnWorld Support Catherine's Avatar
    Join Date
    Jun 2015
    Posts
    1,260
    Location
    California
    Mower
    Kubota

    Re: John Deere LA135 (LAWN TRACTOR MOWER)



    Welcome to the forum!

    I'm going to move this thread over to our John Deere section
    Catherine
    LawnWorld Support

  6. #5

    Join Date
    Nov 2014
    Posts
    10,183
    Location
    Australia
    Mower
    Victa slashers & Push , Rover Rancher II's, Cox ( several ) & White LT120 + GT 200

    Re: John Deere LA135 (LAWN TRACTOR MOWER)

    Quote Originally Posted by SJS View Post
    ranke

    Thanks for the reply.......
    I cranked the engine with an electric drill & 32mm socket (plugs out!) and obtained a healthy spark at both plugs..... I then removed the starter & sure enough, it was well below speed due to to two of the brushes being stuck in their holders, one +ve side , the other on the-ve side.... due to overheating of the plastic brush holder, so assuming that is the cause of "low cranking speed".
    I was a bit mistified as the speed seemed adequate, but on the other hand, this is a two cylinder B&S ....I am more familiar with the single pot B&S models.
    Now the owner is shocked at the quoted replacement price!
    Cheers.
    Steve.
    Most of the B & S starters have replacement brush sets available.
    If Briggs don't list them then Rotary , Oregon, Stens, Prime Line will.
    I got mine from Prime Line when they were closing down in Aus.

    If the brush holder is distorted then the owner is cranking for too long so there is a problem elsewhere.

Similar Threads

  1. Replies: 0
    Last Post: 09-13-2018, 10:15 PM
  2. Repairs John Deere LA135
    By Thomas G Uber in forum John Deere Forum
    Replies: 5
    Last Post: 10-03-2016, 07:44 PM
  3. 445 John Deere 445 garden tractor/lawn mower
    By Roy Sterling in forum Small Engine & Mower Repair
    Replies: 0
    Last Post: 05-20-2014, 12:14 PM
  4. difference between John deere la135 and john deere 135
    By duster in forum John Deere Forum
    Replies: 1
    Last Post: 05-23-2013, 01:00 PM
  5. John Deere 70 lawn tractor
    By smac in forum Small Engine & Mower Repair
    Replies: 0
    Last Post: 04-20-2012, 07:53 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •