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Chris kaatz Posted on Aug 08, 2015
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My John Deere la105 throttle control does not work. What's the fix? This is a riding mower

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David Kassin

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  • Master 981 Answers
  • Posted on Aug 09, 2015
David Kassin
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Check the throttle cable it may have come loose or broken.

5 Related Answers

rjnworbnhoj

  • 142 Answers
  • Posted on Sep 20, 2008

SOURCE: John Deer riding mower

http://www.deere.com/specsapp/CustomerSpecificationServlet?sbu=CCE&pciModel=L120%20GX&displayModelName=L120%20Lawn%20Tractor&tM=HO&pNbr=SKU20346

Here is a link to John Deere website for this model, it states that it has a 16 amp charging system. It also has the phone numbers listed for contact, and requesting the manuals for this mower.

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Anonymous

  • 86 Answers
  • Posted on May 09, 2009

SOURCE: John Deere riding mower SRX95 - Steering wheel is sticking

You need to replace your Ball Joints! On the front steering rods There are two sometimes three !

Anonymous

  • 246 Answers
  • Posted on May 17, 2009

SOURCE: I have a John Deere Riding lawn mower which starts

Hello roobar2009:

>>From your Description it Sounds like a Carburetor Problem, a Bad Fuel Filter or Bad Gas.
>>If you have Changed the Filter and the Gas and the Problem is Still happening, then
>>The Following is a Simple Way to make Sure the Engine is Getting Gas from the Carburetor to Run.
>>If the Engine Starts and Quits, then Check the Carburetor Solenoid.
>>If the Carburetor Solenoid is Good or has been Removed and the Engine will Start and Quit when the Gas is Poured into the Carburetor Throat, then Soak and Clean the Carburetor.
>>The Following is a Basic File I Made for Cleaning Carburetors. Any Input is Appreciated. Even though the Carburetor Looks Clean, the Internal Passages May be Restricted with Varnish that Gas Causes to Build Up over Time.
>>Spray Cleaners Remove this Varnish in Layers, so Soaking is the Only Sure Way to Remove ALL this Varnish.
>>I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning.
>>You Only have to Remove the Bowl (if Applicable), Float Pin (if Applicable), Float (if Applicable), Needle Valve.
Remove Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed.
>>If you are Able to Remove and Disassemble the Carburetor and Keep the Gaskets Intact, then Usually these Gaskets can be Reused. The Only Parts you May Need to Replace is the Needle Valve.
>>The Float Needle Usually is Not Replaced Unless it is Not Operating Properly (the gas flow not shutting off and the carburetor is Flooding). Do Not Remove the Main Nozzle. This is a Pressed Fit and Removal is Not Required for Cleaning. Soaking and Blowing the Carburetor Out After Soaking will Clean the Nozzle.
>>Once Disassembled, then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts.
>>Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidental Spillage. Then Blow Out the Passages with Compressed Air.
>>***(Do Not Use High Pressure Air for the Zama Carburetors, they have Check Valves for the Primer and these are Usually Blown Out of the Carburetor if Not Careful. Allow the Zama Carburetor to Set on a Drip Pan and Dry)***.
>>****All the Carburetor Adjustments are the Same for Lawn Mower and Trimmers. There are Several Location for the Air Mixture Screws. The Idle Air Mixture Screws are Usually Located at the Top of the Carburetor Bowl and the Top of the Carburetor Body.****
>>If the Main Air and Idle Air Mixture Screws are Side by Side on the Side of the Carburetor, then the Idle Air is Nearest the Engine. The Main Jet Air Mixture Screw is Located in the Bottom of the Carburetor Bowl or Beside the Idle Air Screw on the Side of the Carburetor Body.
>>Some of the Older Model Carburetors have the Main Jet Mixture Screw Straight in from the Top of the Carburetor Body (this is Rare anymore). If you have Cleaned the Carburetor (Disassembled and Soaked Overnight in Carburetor Cleaner (I Use Gunk). Then Blow Out the Passages with Compressed Air and Install a New Kit if Required. Now Setting the Air Mixture Screws:
>>****Turn the Idle Air and Main Air Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns. Holding the Throttle Full Open, Start the Engine. Turn the Main Air Mixture Screw Clockwise Until Proper Revs are Obtained. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs. Now Allow the Engine to Idle. Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required. Now Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Reset the Engine Idle if Required.****
>>If This Carburetor has a Single Air Adjustment (Except Tank Mounted 9200 and 100900 Engine Model Carburetors), Use the Section Above that Pertains to Full Throttle RPM Air Mixture Screw and then Adjust the Screw if Required to Eliminate Any Hesitation when Throttling from Idle to Full Throttle.
>>For the 9200 Model Tank Mounted Carburetor Adjust the Air Mixture Screw Full In, then Reverse 1 1/2 Turns. Set the Throttle Lever to Full Throttle and Start the Engine.
>>Now Carefully Use 1 Finger and Open the Throttle Plate and Over Rev the Engine Slightly. If the Engine Over Revs and Does Not Struggle to Over Rev, then the Carburetor is Set. If the Engine Struggles to Over Rev, then Turn the Adjustment Screw In 1/4 Turn and Repeat the Over Rev Test.
>>If you Adjust to 1/2 Turns In and the Engine Still Struggles to Over Rev, then Return the Adjustment Screw to 1 1/2 Turns Out from Snug and Turn the Screw Out 1/4 Turn. Do the Over Rev Test. Continue this Process Until you have the Engine Over Revving without Struggle.
>>By Adjusting the Carburetor on this Style Carburetor Until the Engine Over Revs without Struggle, you have Adjusted the Air Mixture to the Best Possible Setting.
>>This file was Intended to Give you the Basic Carburetor Cleaning Instructions and May Not Reflect Your Carburetor Components.
>>If you have Questions, Please Ask. The links above Provide Good Directions on Cleaning the Carburetor. Make sure you use an Compressed Air to Blow through all the Carburetor Passages to make sure they are Clear.
>>1- http://www.repairfaq.org/samnew/lmfaq/lmclctc.htm
>>2- http://www.cpdonline.com/692509.pdf .
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

mickey813

mickey813

  • 472 Answers
  • Posted on Oct 02, 2009

SOURCE: John Deere 160 riding mower. When I try to engage

CK THE SEAT SWICH OR THE BRAKE SWICH ONE OFEM IS BAD

tfelton3

  • 183 Answers
  • Posted on Apr 06, 2010

SOURCE: John Deere GX85 Riding Mower engine surges

did you drain the gas before putting it away last season? If not, I would drain all of the gas and put in fresh gas, also replace any in line gas filters

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John Deere 697203 carburetor on a John Deere riding Mower 19.5hp engine. How to hook up the linkage for it

Question edited for clarity maker name in full.
Question moved from Hewlett Packard.

Diagrams and videos. It would have been useful to have the model number of the mower. My normal search query would be
'John Deere model replace (or service) carburetor'. Plus perhaps adding the work 'linkage' or 'choke'. All this information is out there as well as John Deere Service Manuals.

https://www.google.com/search?q=john+deere+throttle+linkage+diagram

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https://www.google.com/search?q=john+deere+mower+service+manual

..
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How do you adjust a clutch-brake on a John Deere LA105 mower?

Hello CherylPlazza,

Here's the Owner's Manual

John Deere la105 Manual

Read & heed (perhaps even make a copy)?).

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I have a John Deere LA105 and it is getting too much gas and coming out of the carburetor flooding it,I checked the float and it is fine,,,what else could it be?

I'd look at the valve needle and/or needlevalve seat. One or both maybe corroded or obstructed from free movement.
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John Deere LA105 lost power

Hi Hank:
Did you hit something with the mower, or did it happen gradually?
Probabaly a good idea to start with a basic service:
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I need a wiring schematic for the LA105 John Deere lawn tractor

http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt?search=model&model=la105
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My john deere rideing mower idles up and down at

The motor has a governor that controls its speed, and if one of the pivoting parts or linkages is sticking this would happen. Look for the throttle linkage on the engine carburetor (move your throttle up and down, watch what moves). The governor will be a second linkage attached to the throttle arm. Squirt some WD-40 on any rotating parts and make sure a foreign object isn't stuck in there. It could also be the part of the governor that's internal to the engine -- harder to get at, but not expensive to fix.
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