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How often do I replace the spark plug?
What is the spark plug model?
Where should I buy it?

Thanks.

Richr106 said:

How often do I replace the spark plug? What is the spark plug model? Where should I buy it? Thanks.

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I replace spark plugs once a year.
Take the plug out and read it.
You can get a plug at any auto parts store or walmart

Richr106 said:

How often do I replace the spark plug?
What is the spark plug model?
Where should I buy it?

Thanks.

Click to expand...

- You need a 13/16 spark plug socket, ratchet, a feeler/thickness gauge to do this job...
- The maintenance schedule says to inspect it every 100 hours (1 year), and replace every 150 hours (2 years).
- The spark plug is an NGK (brand) model BPR5ES, Honda Part number is 98079-55846, list price is $2.98
- Google the part number to find a Honda Dealer selling it online, or use this link to find a Honda Dealer in your area: Find A Honda Dealer
- Here is how to inspect and replace the plug:

I've never had to gap or check the gap on it I get the same plug at napa for the same price I replace once a year unless a situation arises where I have to replace again

exotion said:

I've never had to gap or check the gap on it I get the same plug at napa for the same price I replace once a year unless a situation arises where I have to replace again

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Sorry Robert I seem to be contradicting you a lot lately

I like to remove the plug on my machines every year and use a fine stainless wire brush on the them to clean em up.

exotion said:

Sorry Robert I seem to be contradicting you a lot lately

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Honda's specs for inspection and replacement are driven by a few factors, including what the engineers expect the plug life to be, which can affect engine performance, as well as how a worn-out or incorrectly gapped plug can affect exhaust emissions. As far as the Environmental Protection Agency is concerned, the spark plug is indeed part of "the emissions system" and they are very concerned about ensuring customers recognize this fact and keep the engine's emissions output within the certified limits.

While the EPA isn't going to start inspecting and writing "tickets" for homeowner's mowers with incorrectly gapped plugs eek, there is a general push within the small gas engine industry to improve and extend emissions performance, and part of that is making sure existing engines comply to EPA-certified figures for as long as possible.

Straying a bit off-topic here, Honda did announce its first fuel-injected portable generator a few weeks ago; I wonder how long it will be before we see fuel-injection on <200 cc vertical shaft mower engines?

FI would be awesome!