Question about Mtd Garden

1 Answer

Engine revs up and down on MTD 13.5 HP Yard Man lawn

I just bought a used MTD 13.5 HP Yard Man lawn tractor that seems to have an engine problem. After choking, starting and running for a few minutes (perfectly), the engine then begins to rev up and down by itself. It does this at nearly any throttle setting, but it dies at the lower settings. It won't mow grass because it dies.

It may not be relevant, but it sounds excessively loud at the exhaust. Also potentially irrelevant might be that the tractor came from California originally.

I checked gas, lines, air filter, carburetor for obstructions. The guy who sold it says it needs a new carburetor. He says the two wires running to the bottom of the carburetor open the gas flow. He thinks that electrical part is bad and the gas isn't flowing consistently.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,418 Answers

Hello ctacket You may have 1 of 2 problems. First the carb. may just be dirty. It should have a 1/2 inch bolt directly in the bottom of the Carb. bowl. turn off the fuel pecock. Remove this bolt and carefuly remove the bowl. It has a rubber gasket at the top becareful not to damage that. ck for dirt or gummy old fuel and clean with spray can brake cleaner. 2nd problem may be a bit harder to find and fix. it sounds a little like a speed governor spring may be missing, out of adjustment or has gotten very weak with age. This is located on top of the carb. and hooks to another rod on the engine. as engine load increses the engine slows down (cutting into thick grass, no matter what speed you have set the engine at will slow down the engine down, then this gov. moves the speed rod on the carb to increse engine speed to over come the load) I hope I this makes sense. Ck for dirty carb bowl first, then dig into the gov and spring. I will try and help you out if you need more.

Posted on Jul 01, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Yard man model series 760-770 Lawn Tractor was smoking a lot. Has oil, grass was thick and a little wet. Could either of these cause the heavy smoking?


over working the engine could have made it over heat that would make it smoke and also damage the engine

Jul 31, 2012 | Mtd Garden

1 Answer

Looking for schematics for a yardman lawn tractor model 760-770


Use the MTD part finder website and get the diagrams as you are seaching for the parts.

http://www.mtdparts.com/webapp/wcs/stores/servlet/ARIPartFinderView?storeId=10101&catalogId=19502&langId=-1#/MTD_Merged_Data/13637-8_(1988)/Lawn/010103700-A/0101037000001

Jul 01, 2012 | Yard Man Yardman Riding Lawn Mower 38in...

1 Answer

How to increase the land speed


bigger back wheels,otherwise you cant,unless you increase engine revs.should be about 3600 revs

Jul 04, 2010 | Mtd Yard - Man 160cc, 21" Self - Propelled...

1 Answer

MTD 46" Yard-Man Lawn Tractor battery connection problem!?


the battery for a garden tractor should have the holes already in it if not you can buy a clamp that you can use that has a hole for what you need. good luck

Apr 11, 2010 | Mtd 46" Dozer Blade, Fits All & Yard -...

1 Answer

Yard man mtd 20hp 46"cut hydrostatic drive lawn tractor,model"13AU69H401 deck belt need diagram to put it back on?


go to the online web site for the yardman this will give you the guide on how to replace the belt.

Jul 12, 2009 | Mtd 46" Dozer Blade, Fits All & Yard -...

1 Answer

I have an old Columbia Garden tractor is this a MTD


go to partstree.com put your make and model# in and click the year you need from the engine window it should get you close to what you need .hope this helps

Jul 11, 2009 | Mtd 46" Dozer Blade, Fits All & Yard -...

1 Answer

Engine Pulley 660 MTD Yard Machines


make sure the narrow side of the belt goes in the pulley; you may have the wrong belt; make sure all the pulleys for that belt are the same height , if one is higher than the others that may be the problem

Jun 12, 2009 | Mtd 46" Dozer Blade, Fits All & Yard -...

1 Answer

Lawn Mower won't start


Its a thing of beauty to see problems solve themselves. It seems to me this trial and error approach is very taxing and could have been avoided if 1, your small engine repair guy/Craftsman/Sears had sold you the right parts from the start, or 2, you had bought the right part... from the start.

Oct 21, 2008 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

Not finding what you are looking for?
Garden Logo

Related Topics:

513 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mtd Garden Experts

Roland W VanLue
Roland W VanLue

Level 3 Expert

486 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Phil Walker
Phil Walker

Level 3 Expert

605 Answers

Are you a Mtd Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...