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I have a Yardman 6.5 OHV Intek 21" lawnmower and all of a sudden it started idling really high and I can't find an idle adjuster, is there one and if so where? thanks for any help you can give me

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I smacked the front of the mower into my boat trailer, and it shut down and would not stay running.. Idle was too low. Finally found the idle adjust and fixed it right away.The idle adjust is a piece of metal that is bent down, over the edge on the throttle linkage. It hangs over just above and to the right of the gas "bulb"...that thing you have to press before starting the mower. It is 1/8 " wide and about an inch long. comes off the linkage that is connected to the throttle cable assembly. As it hangs over the edge of the assembly , it controls the idle speed. bend it one way or the other to adjust.It is kind of hard to describe. Hope this helps.

Posted on Jun 24, 2011

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Posted on Jan 02, 2017

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Mowing at mid throttle, suddenly the engine started over revving. Acts like governor isn't working. Every time I try to restart it instantly starts to over rev.


According to Amie Taylor on http://homeguides.sfgate.com/lawnmower-revs-up-down-100220.html "Airflow Issues A lawnmower that hunts and surges may be experiencing something as simple as an airflow issue. If the air that the engine requires to run is blocked, especially sporadically, it can cause the engine to slow down. When the blockage moves or clears, the engine may suddenly rev up in response. To fix this type of problem, check the air filter to ensure that it's not clogged with dirt and debris. Check the vented gas cap as well. Both issues can cause reduced or sporadic air flow, and clearing them will fix the problem.
Spark Plug Problems Another problem that can cause revving and dying of a lawnmower engine is a faulty or poorly adjusted spark plug. Check the spark plug to see if the wire is connected to it firmly and not wobbling about. If it is connected correctly, remove the spark plug to see if it's covered with corrosion. If so, a simple scrubbing with a wire brush can restore it to working order. If necessary, replace the spark plug with a new one. Check the spark plug gap with a spark plug gauge to ensure that it's adjusted to the proper setting recommended in your owner's manual.
Carburetor Adjustment A carburetor that's incorrectly adjusted is a common cause of poor engine idling that results in hunting and surging. Fortunately, most lawnmowers have two screws that allow you to adjust the carburetor yourself. One screw controls the idle speed while the other adjusts the idle mixture. Check the manual if you're unsure of the location of the idle adjustment screws. Start the mower and allow it to run for 5 minutes. Then slowly adjust the screws tighter or looser in turn until the mower runs and idles smoothly.
Fuel Problems A particularly simple fix that can be at the bottom of many lawnmower idling problems is old or contaminated fuel. If the fuel has been left in the mower while it was stored over the winter or while the mower has remained unused, drain it and replace it with fresh fuel. If you have gas-powered blowers and trimmers that use a mixture of 2-cycle oil and gasoline, check to see that you've not placed that mixture in the lawnmower inadvertently."

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