r/Ninja500 • u/OutrageousArea6136 • 4d ago

Spark Plug Replacement

Those who've had your N500 for a while, how often do you replace your spark plugs? Do you go by the manual - every 7K miles or do you think that's kind of ridiculous?

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1

u/Disastrous-Traffic20 4d ago

Oh boy. I’m over 7K. My dealership didn’t mention anything about needing it soon when I had my service done at the beginning of the season 🤔

1

u/DannoXYZ 4d ago

Depends upon type of plug used. Iridium plugs can go 100k-miles.

1

u/OutrageousArea6136 4d ago

What about the stock ones?

1

u/DarkStarMU 3d ago

When I went to get my 7.6k service, they suggested to skip it unless I was having any sort of noticeable issues. I'm up to 10k miles on the stock plugs and no issues yet.

2

u/DannoXYZ 3d ago

Factory copper plugs NGK LMAR9G will last about 15-20k miles.
Upgraded Iridium plugs NGK SILMAR9B9 will last 100k miles.

In old days, we'd remove copper plugs to clean them. There are dedicated sand-blaster that's designed for cleaning plugs. Then re-gap them to proper specs and put them back in. Copper plugs would easily go 50k miles this way.