How do I fit the LR4C-E?

5 steps, listed on this page with the replacement video where the maker has one.

What happens if I don't change it?

A worn or fouled plug makes the generator hard to start and run unevenly under load.

Generator spark plug

NGK LR4C-E spark plug

LR4C-E

Fits 1 model · replace every 2 years

Wrong part, or your model missing? Tell us. A person checks every report.

GenuineGenuine NGK

$10.45

Sun City Motorcycles · 28 OctLowest genuine · Sun City Motorcycles · checked 28 Oct

CompatibleCompatible option

See seller

No compatible seller tracked yetNo compatible seller tracked yet

Genuine: made by NGK. Compatible: another brand.Genuine is made by NGK. Compatible is made by another brand. Check the seller's page for the size and models it fits.

Lowest price · $10.45

Sun City Motorcycles. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.

Open Sun City Motorcycles · $10.45

Compare 2 sellers

AUD, before delivery. Each price shows when it was checked.

Genuine NGK

2 sellers

Sun City MotorcyclesGenuine · checked 28 OctGenuine part · Lowest genuinechecked 28 Oct$10.45OpenGo to seller

Mower MerchGenuine · checked 28 OctGenuine partchecked 28 Oct$11.50 each10-pack $115.00OpenGo to seller

Open cheapest seller · $10.45

Opens Sun City Motorcycles in a new tab. Their page is the source of truth for price, delivery and returns.

How long it lasts

Usually every 2 years (every 2 years or 300 hours of use, whichever comes first, Honda's EU10i manual says; check and re-gap it every 6 months or 100 hours).

After replacing: No reset needed.

Not due yet?

Get a nudge when your spark plug is due — it's every 2 years. One email two weeks before, no newsletter. Manage or stop it anytime.

How to change the LR4C-E spark plug

Watch the guide or follow the steps.

EU1000i and EU2000i Generator Maintenance · Honda (official)

1Let the engine cool, then remove the spark plug maintenance cover and pull off the spark plug cap.
2Clean dirt from around the plug base and remove the plug with a spark plug wrench.
3Check the gap on the new plug: Honda gives 0.6-0.7 mm. Correct it by carefully bending the side electrode.
4Screw the plug in by hand to avoid cross-threading, then tighten a new plug a further 1/2 turn with the wrench (a used plug 1/8-1/4 turn).
5Refit the spark plug cap securely and the maintenance cover.

Every number this part goes byLR4C-E · LR4CE · NGK LR4C-E

Retail name:: LR4C-E
Retail name:: LR4CE
Retail name:: NGK LR4C-E

Sellers list any of these; they are the same part.

Will it fit your appliance?

Type your model number and we'll check it against the makers' lists.

Your appliance model

Fits this Honda modelEU10i

Honda1 model

EU10i

NGK LR4C-E, gap 0.6-0.7 mm.

Common questionsWhat does the LR4C-E fit? · How often should I replace the LR4C-E? · Where can I buy the LR4C-E in Australia?

What does the LR4C-E fit?: The NGK LR4C-E spark plug fits the Honda EU10i.
How often should I replace the LR4C-E?: Every 2 years, or sooner if it looks worn.
Where can I buy the LR4C-E in Australia?: We track 2 Australian sellers for the LR4C-E; the lowest listed price when we last checked was A$10.45 at Sun City Motorcycles. Prices are re-checked daily and dated on this page.
How do I fit the LR4C-E?: 5 steps, listed on this page with the replacement video where the maker has one.
What happens if I don't change it?: A worn or fouled plug makes the generator hard to start and run unevenly under load.
Is there anything to reset afterwards?: No reset needed.

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