Question about Mtd Yard - Man 160cc, 21" Self - Propelled Lawn Mower

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MTD PRO Model # 12av55dq713

It idles up &down like it's getting ready to run out of gas

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6ya6ya
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Posted on Jan 02, 2017

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rycgl
  • 1545 Answers

SOURCE: I have a mtd chipper shredder that's been idle for

The unit could possibly have carburetor issues after being idle for so long. For a start, add maybe some solvent to the fuel to attempt varnish removal in the carb without taking it off the engine. I suggest using a dose of the Chem Tool Berryman B-12 in your fuel mix. It is pretty strong and if you are lucky, it will enable the engine to run. If not, carb removal and rebuild will probably be required.

Posted on Feb 27, 2011

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woobie dog
  • 1273 Answers

SOURCE: my lawnmower starts fine but runs rough,it does

Hello.

Replace the air filter. This could be the source of your problem.

Best regards, --W/D--

Posted on Apr 29, 2011

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1 Answer

MTD lawn mower won't stay running.


Did you empty the carb bowl and clean out any old fuel & contaminants? This is the most effective way to determine fuel issues. It also gives you the opportunity to remove all old fuel from the fuel lines, filter, & drain the tank bone dry. You may have already introduced water from your previous efforts so take out the plug & pull the cord a few times to dry out the cylinder. Next start the first time with starter fluid since you may still have contaminants in the primer system. In the future use only non-ethanol fuel, a marine grade stabilizer such as "Sea Foam" and replace all fuel every spring. Fuel begins to varnish and break down after 1 month unless stabilizer is used. Ethanol gas absorb water from the surrounding air in about 2 months & only gets worse.

Sep 06, 2015 | Mtd Garden

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139 cc ohv engine is racing how do I turn down the idle


get down and look at the carb. a little screw on top will allow you to adjust the idle, but;, check the choke, it is stuck in place or mal functuning maybe, but turning the screw right or left will set idle

Aug 07, 2012 | Yard Machines 11A54MC006 21Inch 139cc MTD...

1 Answer

Where is the oil plug for my 2004 MTD mower. Model no. 12A-998Q795


Hello, The 2004 MTD Pro walkbehind doesn't have an oil plug per say. I am guessing you wish to perform an oil change. The oil filler cap/tube assembly is also the drain, as is with many walk-behind mowers. ( Here's a link of the engine breakdown showing the parts: http://www.mowerpartsweb.com/MANUALS/HONDA/GCV160A.PDF )

Make sure the gas has been drained/run dry - this will prevent accidental spills during this proceedure. Next, for safety, disconnect the spark plug wire. At this point, I usually have a couple of blocks handy to place the side wheels ( the ones on the side with the oil dipstick ) On your model it should be the right hand side. just at the edge of the fan cover cowling. between the blocks, have a container ready to catch the oil, I use one of those square margarine tubs as the sides are low - but any suitable container will do. Bear in mind, it should hold about 1/2 to one litre of oil. Be carefull not to tip the machine with the spark plug down - this will cause the air filter to become contaminated and lead to poor starts or not at all. ( If this happens, replace the air filter.) Now jus tip so the spiggot is over the container and allow to drain. Tip back into normal upright position and fill to propper mark. Simple Tip: save any oil containers - they come in handy for the used oil and are easy to take to the hazardous waste disposal.

Hope it goes smoothly!

May 11, 2011 | Mtd Garden

1 Answer

I have a mtd chipper shredder that's been idle for years. I have new spark plug, gas & oil. Air filter is clean. Any other tips to get it fired up?


The unit could possibly have carburetor issues after being idle for so long. For a start, add maybe some solvent to the fuel to attempt varnish removal in the carb without taking it off the engine. I suggest using a dose of the Chem Tool Berryman B-12 in your fuel mix. It is pretty strong and if you are lucky, it will enable the engine to run. If not, carb removal and rebuild will probably be required.

Feb 27, 2011 | Mtd Heavy Machinery

1 Answer

RE: MTD trimmer YM1500, 31 cc motor. Won't run without the check lever near full on. Fresh gas, mixed 1 gal to 3.2 oz 2-cycle oil. Found & tightened loosescrew on throttle butterfly valve, and loose...


Most carbs have a H (running) and L (idle) mixture screws on them, but the newer ones are getting away from that somehwhat and some aren't adjustable. I am including a tech guide for carb adjustment for a Zama carb. All diaghram carbs are similar.
http://www.zamacarb.com/tipspage.html

Aug 28, 2010 | Garden

1 Answer

My mtd tradesman lawn mower does not run smooth. where is the idle mixture adj. screw? the engine is the tecumseh 5.5 hp model #VLV55 501029A(D)


These engines do not have an idle mixture adjustment. Most of the problems with them not running right are from bad gas, water in fuel, or carburetor jet deposits. If your fuel is ok, then you'll want to clean the carburetor metering hole. You'll want to either empty the fuel, or clamp the fuel line, but after that, take the nut off the bottom of the carburetor bowl. You will see holes both in the sides, and through the middle. Use a wire to clean these out, and some acetone or carburetor cleaner to get the rest of the deposits out, and you should be fine.

Apr 14, 2009 | Mtd Products Yard Machines 158CC Tiller

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