Question about Ngk Spark Plugs B6Hs 7534 P B6Hs Spark Plug 4/Pk

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My lawn mower spark plugs only work for a day or two then must be replaced what would be the problem

I replace them every time to be able to continue

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Riding lawn mower


get a spark tester and plug it into one of the plugs after it gets up to operating temperature. test the other one if you have good spark plugs and no spark going through the tester the coil may be breaking down. and needs to be replaced.

Aug 05, 2016 | Craftsman Garden

1 Answer

My lawn mower have problems with spark plugs I have to change them every day or two . What would be the problem?


What is wrong with them?

Why not clean them?

What lawn mower?
What motor?

Is it worn out & using oil-if so there
is no fix

Dec 01, 2014 | Garden

1 Answer

Compression lockup


Remove spark plug. Pull rope several times to blow out cylinder. Spray WD 40 in spark plug hole. Pull rope several times. ensure compression is present. Replace spark plug with new one. Spray starting fluid in cylinder before replacing spark plug. Ensure plug wires snaps on tight. Check oil level, fill with 30w oil if required. All mowers have a low oil start cutoff. Clean or replace air filter.

Sep 10, 2012 | Toro Power Lawn Mower

1 Answer

My lawn mower fires up but idles slow and rough


No adjustments. Automatic governor. Replace spark plug. Ensure blade is sharp and oil is full. 30w oil. Always put Stabile in gas. When you remove spark plug pull rope several times to blowout cylinder. Spray a little WD40 in spark plug hole, then pull rope several times. Spray starting fluid in spark plug hole, replace plug, ensure plug wire snaps on tight. Clean replace air filter.

Aug 09, 2012 | Troy Bilt 5.5hp Self Propelled Mower

1 Answer

Yard macine model 139cc will not start. Has gas and oil... where is the spark plug located on the lawn mower? I would like to replace it.


The spark plug is at the end of the thick black wire in the middle of the front of the engine or looking at the mower from the front, it is to the left of center. Make sure you set the spark plug gap before installing it new. The gap is probably around .030". They have tools for doing this at the auto parts store. Sometimes and older plug can be cleaned with a stiff wire brush and some solvent and gapped properly and continue to work well.

May 28, 2011 | Yard Machines 11A54MC006 21Inch 139cc MTD...

1 Answer

Mower is puttering and spark plug is burning out frequently


Hi lutbarajas--
If the engine's plug is continually fouling, you may have an improperly rated spark plug. It sounds to me like the plug you have in the mower is burning too hot. Take the plug to your local lawn and garden supply shop and see if they can size a cooler burning plug for you. If the plug is original, and you have never tinkered with the carburetor adjustments, the plug may just need replacing.
--Hope this helps.

Oct 07, 2010 | Poulan Pro 22" Self Propelled High Wheel...

1 Answer

Lawn boy 2 cycle mower won't start


Replace the spark plug and retry.
If a new plug does not work push the spring button on the bottom of the carburetor to make sure fresh fuel is in the fuel bowl.
if this does not work remove the spark plug and squirt some light oil (like wd 40) right into the spark plug hole; roll the engine over slowly a couple times using the starter rope. put the plug back in and snap the plug wire in place. If the mower now starts after a couple pulls it means the rings are worn, replace the rings.

May 29, 2010 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

Mower starts but won't run


Check gas line. Check for a gas filter and replace it. Replace spark plug. If the prob continues - it might need the carb rebuilt.. If a small engine sits to long without being run - the gas will shellac in the carb and render it to not function properly..

have a great day !

Apr 09, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

My mower starts and stays running for about 5 seconds then quits..has gas and oil any clues


Check gas line. Check for a gas filter and replace it. Replace spark plug. If the prob continues - it might need the carb rebuilt.. If a small engine sits to long without being run - the gas will shellac in the carb and render it to not function properly..

have a great day !

Apr 09, 2010 | Mtd 22" Yard Machine Push Mower

3 Answers

Poulan 6.75 Lawn mower will not start


Remove spark plug, clean and dry. Replace plug. Remove air filter. Spray WD-40 into carb opening; one second blast. Turn over engine, (pull handle). Engine should start briefly and run for 3 seconds.  If not, you are not getting spark to spark plug. If engine starts, you have a dirty carb and you can buy a rebuild kit from manufacture.

May 02, 2009 | Poulan Pro " Pro" Self Propelled Mower

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