Question about Mtd 22" Yard Machine Push Mower
Just got this (used 2007) mower and it ran fine the first week but this week the idle flares up and down and wants to die.
Posted by Anonymous on
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Posted on Jan 02, 2017
the problem is either u have trash in the bowl of the carb or the float in the carb is stuck. either way u need to have someone look at it.
Posted on Aug 12, 2009
Probably a carburetor problem. Old fuel, tiny amounts of water, plugged jets or a totally plugged air filter will cause that. Another option may be the throttle linkage is either unhooked or bent.
Remember to shut off the gas tank or empty it or plug the line before opening a carb or removing the carb.
Carb first, on the bottom is a float bowl held in place with a bolt that is hollow and is also a fuel jet. Remove the sediment(float) bowl and make sure it is clean, make sure the gasket on top is not damaged.Make sure the float moves freely up and down and the needle valve is not stuck. Make sure nothing is bent or shows rub marks on the float. Clean the needle valve and all orfices in the carb by spraying carb cleaner through them.The "bolt" that holds the float bowl is usually brass and hollow in the center with two tiny holes that are horizontal, if the center or the holes on the side get plugged - the engine will not run, it will only run until it uses up the gas that seeps into the center. Remove any gaskets first as carb cleaner will cause rubber to expand and get very soft. It is best to usually remove the carb to do a thorough cleaning.When every thing is clean reassemble and reinstall the carb. Clean the air filter thoroughly with some solvent or gasoline, and let it dry (foam filters) for paper filters, blow them clean from the inside using compressed air.
When all is back together, check to see the wire linkages are in their proper place and that they move freely.
Also ensure the choke is not on and that it works properly when it is started. Occasionally also this problem may be caused by a defective primer bulb if it has one. Usually if defective it will either leak or not work. Some are made with a tiny hole in the end, covering it will cause the engine to speed up.
Posted on Aug 30, 2009
SOURCE: Lawn mower chugging
better late than never, I have the same mower
there is no throttle control on these mowers, if you look under the air filter the throttle is balanced by a spring pulling in one direction and a lever controlled by engine speed. if the spring breaks or falls off the lever will wiggle back and forth, more gas if the engine slows, less if it speeds up. you end up going fast/slow/fast/slow etc.
The tension spring slows the switching down and smooths out the engine speed.
Posted on Jul 08, 2011
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