Repairing a MTD Riding Mower

June 1, 2018

I have an MTD lawn tractor, Diana t81. When I'm changing the drive speed in the 3rd, 4th, or 5th gear, it still drives slowly as if in the second gear? What could be the problem?

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June 1, 20180 found this helpful
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Try putting it in neutral, then in 6th gear, then letting out the clutch. I've read this re-aligns it.

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Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

April 27, 2011

My MTD 15.5HP riding mower won't run unless the choke is pulled out. What could be the problem and how to fix it?

By Ron from Nashville, TN

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May 15, 20110 found this helpful
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Ron, I think your carburetor is dirty. Remove and clean it well. Billy Griffiths from South Africa.

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August 19, 2010

I have an MTD riding mower, 18hp twin power. I have a carburetor issue, if I choke the carb and cover the little hole with my finger, the engine starts right up. If I remove my finger, it will die. I run the rider with choke pulled out fully. I am unable to utilize the throttle control or it will die. If I push in the choke just a little it will die, does anyone have an answer to my dilemma?

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By Dano77 from Buckner, MO

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April 10, 20170 found this helpful
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You need to replace the carb.

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September 1, 2019

My MTD ride on lawn mower runs great, but quits when I let the clutch out. It is model 13ab662f516 13.5 HP in perfect, hardly ever used shape.
Thank you.

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September 1, 20190 found this helpful

Check filter and spark plugs!

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July 15, 2010

I have an MTD 42a707 18.5 hp riding lawnmower. The engine turns over plenty fast, it is getting gas, and has new spark plugs, but is not getting a spark. Does that model have a coil?

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By craig from Zimmerman, MN

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September 12, 20150 found this helpful

If you're not starting and the plug is firing good, it's likely the "anti-backfire valve" has taken a dump. It screws into the bottom of the carb and has a couple of wires on a plug attached. Remove and replace.

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March 21, 2017

The engine starts with no problem, but begins to surge, RPMs up and down. Why?

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March 21, 20170 found this helpful

You might need to clean its carbs

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September 23, 2007

The drive pulley on my MTD riding lawn mower broke. I removed the bolt that holds it on. Do I have to have a "puller" to remove the pulley or just will power and a hammer?

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R.Wilson from Emmett, ID

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October 18, 20070 found this helpful

I wouldn't think twice. Slap a puller on it.
If you are going to be fixing things like this you really should have a set of three-jaw pullers.
I do most of my own repairs and I have an old tool box full of different pullers.
My set of three-jaw pullers is just one of those cheap sets from a tool sale.
The screw threads are not as fine as a more expensive set's would be. No big deal.
I just put a strain on it then smack the end of the screw with a hammer.
Works great.

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October 28, 20070 found this helpful

A pulley "puller" is a good idea. Harbor-Freight in Spokane on Sprague and Sullivan has them.

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DoctorBill

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By John C (Guest Post)
December 13, 20070 found this helpful

Look for a product called, "Fluid Film" at hardware or farm store. It's based on lanolin/wool wax, and is the best stuff I've ever found for getting really difficult parts to release. Give it about 15 minutes to work after application, and you should have a lot better luck removing the part. A puller would be nice, but two pieces of hardwood will generally work, too.

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By ben (Guest Post)
April 8, 20080 found this helpful

i have a 1994 mtd 18 horse lawn tractor. it has a 6 speed control, it's stuck in the third speed and can't start the engine.

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September 25, 2019

My MTD mower rider will start with the drive belt off, but when I put the drive belt on it just jerks and will not turn over. I would really appreciate some help with this issue.

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I have replaced the starter, replaced the battery, and checked for loose wires.

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My 14 hp. MTD riding lawn mower will only start with a charger attached at 75 amp jump start setting even with a new fully charged battery. How do I know if it is the solenoid or the starter? I do hear a single click noise each time I turn the key. The starter is warm after trying a few times which lends me to believe it is the starter. Thanks for any suggestions.

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May 9, 20171 found this helpful

If its clicking its probably the starter solenoid

is it like this?

www.youtube.com/watch?v=GAkfS2ovm9Q

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May 21, 2011

My right back tire is flat, I took off the screw, but can't pull off the tire. Is it supposed to come off from the front of the wheel? In other words are the things that look like washers just frozen because of rust? Or does it pull off from the back of the tire?

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By Linda W. from Salt Lake City, UT

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May 22, 20110 found this helpful

I have a John Deere but I believe removing the rear tire from your machine would be the same. The wheel is held on with a snap ring. You will need a special pair of pliers to remove the snap ring. You should be able to buy the pliers at an auto store. The ring looks like a washer except it has a piece cut out and two holes drilled into the washer near the opening. The pliers have two prongs that fit into the holes. Squeezing the pliers expand the ring so you can remove it. You could also visit a riding mower repair shop and they will help you. They should be listed in the phone book.

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Anonymous
February 9, 20160 found this helpful

Don't think that has a snap ring if not lots of pb blaster and I hooks an good size puller

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July 13, 20160 found this helpful

I'm having trouble putting the front tire back on a riding lawn mower which has a snap ring type thing on it but it dose not have any holes for the snap ring pliers. It looks like it should snap on if you push it but there is not room to push it and I didnt take it off so I dont know how it came off just trying to use the mower, i tried using a washer on the outside just to push it on but didnt work. anysuggestions? I have never worked on anything before just learning and need to get it on Thanks frustrated

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April 6, 2008

I have a 18hp MTD mower that won't turn over. I've replace the starter switch, starter solenoid, and safety switch, as well as replaced the 7.5 amp fuse. Any ideas?

Chuck G. from CA

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April 6, 20080 found this helpful

I usually try spraying a little carb cleaner in as I turn the key. You can try the fuel filter and make sure your gas is still good after sitting all winter.

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By sir (Guest Post)
April 7, 20080 found this helpful

I was having the same problem. It turns out that a piece of cord was wrapped so tightly around the blade shaft that it was frozen there. Cutting wet grass has jammed my blade also.

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By Crystal (Guest Post)
April 11, 20080 found this helpful

Have you checked your spark plug for carbon, that would be my next check, then the fuel filter to see if it's clogged.

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June 28, 2019

I have a MTD l42 riding mower. When trying to crank, the solenoid keeps clicking when cranking.

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May 31, 2019

I have 2007 42 inch Yard Machine riding mower. I forgot which hole my blade cable goes in on my deck.

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November 25, 2018

The mower seems to be engaged, and it is having trouble turning over to start. Is there a way to disengage?

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My MTD RH115B ride-on mower developed a problem last year where the drive belts for the blade and wheels repeatedly came off.

I had it serviced twice last summer by a local plant-hire company, the second time specifically to address this issue. However last weekend I used it for the first time this year and the drive belt for the wheels came off three times in half an hour. The last time the belt for the rear wheels - under the seat - went under the belt wheel and I cannot get it back on without removing the belt wheel. It has what looks like a nut on the top, but turing it just turns the wheel. How do I get the wheel off to replace the belt and why would the belts keep coming off?

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Anonymous
May 31, 20170 found this helpful

Here is the website from the company for troubleshooting: www.mtdparts.com/.../change-riding-mower-drive-belt

It seems involved. You have to take off a lot of parts. They recommend putting them in the order you took them off in order to get them back on correctly.

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April 19, 2015

I've got an older MTD Yard Machine 17 and a half horsepower, 46 inch cut. I need to know how to put the belt on the deck. It has three blades and I cannot figure out how to intertwined the belt through all the pulleys. I need a diagram.

By Scott from JC, MO

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May 5, 2013

My MTD ride on mower will start and drive with no problem, but as soon as I lower the blade to cut the grass the fuse blows causing the mower to cut out. Has anyone any idea why this is happening?

By Richie

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September 27, 20130 found this helpful

You're belts under the lawn mower are to tight or to loose or the spindle is lose they must be bolt drive tight.

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January 13, 2020

Where can I find out how to install the rubber arm pads on my MTD yard machine? I am using replacement round arm pads, Wheeltronic Lift/Snapon Lift.

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