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Model 12H800 lawnmower runs slow. Have new spark plug, new filter, new gas

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 313 Answers

SOURCE: lawnmower problem

for trouble shooting & repair check out www.smallengineadvisor.com for problem solving etc.

Posted on Jun 17, 2008

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  • 63 Answers

SOURCE: Lawnmower loses power when I engage blades

This is most likely a belt problem. Check the deck drive belt that runs from the mower deck to the engine it/s come loose and got stuck between the guides.

Posted on Mar 16, 2009

jmgldsmth
  • 1889 Answers

SOURCE: mower starts w/ priming but stops after 1-2 seconds. Air filter, gas, oil, spark plug are new

Remove your fuel filter (in the tank usually) and, replace it

Posted on May 20, 2009

panilling9
  • 284 Answers

SOURCE: John deere js60 lawnmower is fouling the spark plug

sounds like your carb. is running rich for some reason
be sure to check to be sure your choke is fully off when running
follow your fuel lines they may have stuck the filter somewhere or they may be only using a tank screen filter.
Be sure you have the proper plug installed and gapped .030
most common plugs that are used the most is J19LM or RC12 YC

couple things to check for you mowers issue

Posted on Jun 11, 2009

  • 18 Answers

SOURCE: 18 HP Briggs and Stratton OHV Model 31M777 runs rough

Have you checked the choke? Sounds like it might be stuck closed or partly closed.

Posted on Jun 22, 2009

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2 Answers

Lawnmower will not start. Have spark and fuel. Seems as if it is flooded. Spark plug wet with gas and gas coming out of air filter area. How do I solve this problem?


sounds like the needle is bad letting gas flow freely into the carburetor . should check carburetor to see if needle is bad and replace. take spark plug out and try to start it just to blow the gas out of the compression chamber. put plug back in and it should run like a new one.

Jul 21, 2017 | Garden

Tip

Basic lawnmower spring maintenance


Before it gets too late its worth firing up the lawnmower (and any other garden power tools) to make sure they are running well for the coming months. Here are a few basic tips to make sure it will be worry free for the summer.<br /> <br /> Give it gas: fill it up with fresh quality gasoline (mixed properly with fresh oil if its a 2 stroke). Old gas is not the same as new gas, volatile compounds will evaporate over time leaving you with gas that is harder to burn. Ideally you have used up everything in the tank the previous fall.<br /> <br /> Let it breathe: make sure the air filter is clean. For foam filters you can just clean them with a bit of gasoline (you can use the old stuff if you still have some). Paper filters need to be replaced, typically every year.<br /> <br /> Light the fire: a strong spark is the key to reliable ignition. If the first two tips don't give good results its probably time to change the spark plug.

on Jun 13, 2011 | Garden

1 Answer

My Husqvarna model 38096 will not stay running. Cleaned carb, new plug, new gas.


Hi Sonny:
This is the chainsaw section but I think you're playing with a lawnmower, right?
You're saying that it won't stay running. That tells me that it does start, so the spark is OK, and I'd be looking for a fuel delivery problem. Since you cleaned the carb, I'd be looking at a plugged fuel filter or possibly bad fuel.

Jul 09, 2015 | Husqvarna Garden

1 Answer

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."

May 10, 2015 | Garden

1 Answer

How do i fix my lawnmower


  • If you are using good quality gas, you may need to change the gas filter or air filter and make sure the gas line is not kinked.
Occasionally, the air filter can be partially cleaned by gently tapping it or some types of air filters can be rinsed and reused.

  • If the gas is contaminated, you will need to remove and/or empty the gas tank and use high octane gas for 2-3 fills.
  • If none of these options resolve the issue, you may need to check and/or to change the spark plug and its connection.
  • If all else fails, consider the cost of a major service vs replacement.

Mar 08, 2015 | Craftsman Garden

1 Answer

Snapper lawnmower will not start - sparkplug is good, air filter clean, no idea what is wrong


Try a touch of starting fluid right into the carburator by taking the air filter off. If it then starts but wont run or stay running, the reservoir below the carb should be removed to clean at and the pinhole in the vertical intake tube above the bowl nut. This is the most common problem with lawnmower start problems, the pinhole can be unplugged with one wire from a wire brush. Be careful with the gas, at least pinch off the gas hose with a vise grips while removing the carb bowl.. Never use a droplight around gasoline. most lawnmowers have no mixture adjustments, so it is a matter of cleaning the carb, tank, gas lines. Some oils in gas mix systems settle and clog after less than one season. Spark can be tested by sight, remove the plug and use a clip-on ground wire from spark plug body to metal on the engine with the plug wire connected.

Jul 05, 2010 | Omega Rear Drive Wheel Snapper Mowers

1 Answer

I can't start my honda lawnmower, checked the oil, put new gas use choke,it gives litle sound but not enough to start


Try a touch of starting fluid right into the carburator by taking the air filter off. If it then starts but wont run or stay running, the reservoir below the carb should be removed to clean at and the pinhole in the intake tube above the bowl nut. This is the most common problem with lawnmower start problems, the pinhole can be unplugged with one wire from a wire brush. Be careful with the gas, at least pinch off the gas hose with a vise grips while removing the carb bowl.. Never use a droplight around gasoline. most lawnmowers have no mixture adjustments, so it is a matter of cleaning the carb, tank, gas lines. Some oils in gas mix systems settle and clog after less than one season. Spark can be tested by sight, remove the plug and use a clip-on ground wire from spark plug body to metal on the engine with the plug wire connected.

Jun 10, 2010 | Honda Gxv160 55hp 55 Hp 25mm Dia Lawn...

1 Answer

What is wrong with a Toro GTS5 that starts well but dies 5-10 seconds later. I have changed the spark plug, air filter and oil. New gas too. Any suggestions? Thanks.


Have a Toro GPS5 600 lawnmower. Starts with Choke on, but dies if you move off choke. Also, runs fast and slow when blade engaged. I heard carb for this unit are no longer available. Help

May 16, 2010 | Toro Lawn Mower With Toro Power Tools

2 Answers

Riding lawnmower wont run long


Check for dirt in gas tank some times stuff will fall in when filling and block the hole in bottom of gas tank and wont let gas flow clean everything out and see if it works. Also check that all kill switches are tight and not moving.

Oct 09, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

I have a lawnmower with a BSA 3.5 engine that I cannot start, the problem seems to be no spark at the spark plug. As I have never worked on a lawnmower I have no idea what generates the spark on...


Test for spark by placing a screwdriver into the spark plug wire and holding it close to a bolt on the engine. should see a spark (blue). If not, problem is likely the armature (coil). The coil is located under the engine shroud and held in place by two bolts. If you replace this part, (normally $30 to $40) you must ensure a proper air gap. Auto parts stores have inexpensive repair manuals to help.

Lee
Cherokee Small Engines

Apr 21, 2009 | Garden

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