How often should you change the spark plug on a push mower?

[20 20]

I have had many push mowers over the years, have 2 right now. As someone else said only change if needed. the 2 I've got now have been running atleast 8-10yrs on the their original plugs.


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Is anyone aware of a commercially available, inexpensive device for cleaning plugs? There has to be a better way than pocket knife, sand paper and wire brush that I use

Rekees4300 I use a wire wheel or wire bursh, it makes them purty and shiney.

 

[Bird]

Is anyone aware of a commercially available, inexpensive device for cleaning plugs? There has to be a better way than pocket knife, sand paper and wire brush that I use

What do you call inexpensive? $13 to $30 do? Just go to google.com and enter "spark plug cleaner" and you'll see that Harbor Freight, Nothern Tool, and lots of others sell them. They've been around for a lot of years, but for me personally, it's cheaper to just buy a new plug when I need one.

 

[roamerr]

Unleaded gas has made spark plug changes rarely needed. I'd change it only if having problems -- even then it will likely not be the plug. I have several mowers, weedeaters (Jonsered), and blowers (echo) that are still on original plugs after 8+ years....

 

[honorbound]

I change the plug every year. Set gap at .030 on the new plug. Reason being is less carbon build up on valves. That is only my preference. Air filter also every year, oil change at start of season and depending on use half way through season, 30 wheight oil.

 

[wushaw]

As needed on mine, I had to replace em in the string trimmer & push mower this year, unknown years on the string trimmer got used and 12 years on the push mower.

 

[mostly_gas]

I change my plugs 2-3 years on average, pull and clean every year.