If the spark plug in your mower has gone bad, you’llstruggle with concerns like difficult starts and engine misfires until you change it.

You are watching: How to remove lawn mower spark plug

This quick guide teaches you exactly how to change a spark plugin alawn mower.This shouldn’t take you long also if her mechanical skillsare wanting.

Read on.

What you need (tools and equipment)

Lawn mower spark plug socket/spark plug wrench.A wire brush.Spark plug gauge (or feeler gauge) or also finegap checker.Knife.Replacement spark plug.Spray-on plug cleaner.


The mower need to be ~ above level ground.Wait because that the engine come cool before you proceed.

How to adjust aspark plugin a lawn mower: step-by-step

Let’s watch at exactly how to remove the existing spark plug first.

Stage 1: remove the old spark plug

Start by disconnecting the old/worn spark pluglead/wire. In many cases, the spark plug is ~ above the former (though that can additionally beon the side) the the mower.Tip: refer to your owner’s manual if unsure about the place ofthe spark plug in your mower.

Note: friend may need to remove the mower engine covering (if equippedwith one) to check out the spark plug wire.At this point, ideal practice dictates thatyou clean the area neighboring the spark plug- friend don’t want the debris tofind its way into the combustion chamber later after remove the plug.Fit your spark plug socket/spark plug wrenchover the plug.Now turn it counterclockwise gently andcarefully until you get the plug out.Tips:Prior to moving on, it’s great to be certain thatyour plug demands to be changed since it’s not constantly the case. Watch it keenlyand look at for indicators of gift burned, fouled, cracked, or eroded.We recommend the you wipe the deposits native thespark plug making use of a wire brush and the spray-on plug cleaner to obtain a clearview. Usage a sturdy knife come scrape turn off stubborn deposits.In the absence of the aforementioned signs, it’ssafe come reinstall the old plug. Otherwise, proceed with the replacement.Note: whether reinstalling the currently plug or solving a brand newspark plug, the next steps are similar.

Stage 2: installation the brand-new spark plug

Using the spark plug gauge, measure up and set thecorrect gap between the center and also ground electrodes (at the guideline of the sparkplug).Hereis the thing: numerous mowers require a 0.030 inch gapbut you should follow the particular measurement for your model.

Tip: Go earlier to her owner’s hand-operated tocheck the correct gap if lost. In case of one inaccurate gap (maybe it’s higherthan specified), try to change it through tapping the curved electrode gently untilyou get the exactly measurement.Finally, we concerned installing the plug, whichis nice straightforward- you carry out the turning back of the removal process as describedin step 4.Simply screw in your new plug climate tighten itwith her spark plug wrench. Avoid over-tightening the plug together doing socould easily distort the plug amongst other potential problems.Re-attach the spark plug wire/lead and also mount theengine cover wherein necessary.Start the lawn mower. Everything should runsmoothly if you complied with the above steps correctly.Tip: If upon beginning it girlfriend experience difficulties such as the engine make the efforts to turn over then dying, it can signal the the trouble likely lies in other parts (the carb, ignition system, etc.).How to check a spark plug on a lawnmower

When to tell if that time to adjust the spark plugin a lawn mower

 So, exactly how do you tellif it’s the appropriate time to readjust the spark plug in your mowing machine?

Well, a pair of symptom should offer you needle thatyour spark plug is no longer supporting the mower’s combustion system together itshould and it requirements to be replaced.Here they’re:Lawnmower wont start – because that a many people, this is the clearest sign thatyou’re stuck to a negative plug. Be on the lookout for challenging than normalstarts.Excessivefuel consumption- if your mowing monster has suddenly come to be fuel-hungryand you have to refill it more times 보다 you’re supplied to once cutting, examine thecondition of her spark plug.Persistentengine problems- the engine might be starting- despite after a most hassle-but then it yes, really becomes a bother and you cannot mow in peace. For example,it dies out immediately. That could additionally run because that a couple of minutes then stop. Faultyspark plugs likewise cause the engine to misfire as mentioned earlier.How to remove a lawn mower wheelTip: prefer other little engine maintenance, manufacturers have various recommendations once it involves the spark plug. Most, however, imply that you should physically inspect and adjust the spark plug annually. As always, don’t wait -check and readjust the spark plug according to the timings published in her operator’s manual.

A word on the replacement plug

Overall, lawn mower spark plugs are not the expensive andit’s finest to replace them with a manufacturer-endorsed model.Consult her operator’s manual for the spark plug thatcorresponds to her mower’s make and also model.You can likewise enquire native the dealer/manufacturer via phoneor the website.Another solution might be to go for the very same plug friend havein your mower currently.

How to make a lawnmower fast

How to change aspark plugin a lawn mower: commonly asked concerns (FAQs)

According to experts, a mower’s spark plug should be readjusted once a year assuming that you take great care the the machine.That said, many owners uncover it wise to replace the spark plug once per season.Manufacturers such as Briggs and Stratton are an ext specific and also recommend that you readjust the plug after cutting v it for around 25 hours.
You need to never use a lot of force when trying to obtain a grounding spark plug out.The ideal option is to spray part penetrating oil every around the base and let it sit for about 10 minutes.You can then retry to pull it out with a spark plug wrench/socket.


Changing your mower’s spark plug once due will go a long way in maintaining its optimal performance, smooth operation, and also excellent gas mileage.

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You now know just how to adjust a spark plugin a lawn mower therefore we suppose that you will do it have tiny trouble perfect this essential maintenance chore.Read much more on: riding mower canopy
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