CrankDex

Yamaha YFM100 Champ Spark Plug

The Yamaha YFM100 Champ (100cc) takes an NGK CR7HSA spark plug, gapped to 0.028".

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Key takeaways

  • Spark plug: NGK CR7HSA.
  • Iridium upgrade: NGK CR7HIX.
  • Gap: 0.028 inch - set it before fitting.
  • Covers 1989-1998.
Standard PlugCR7HSA
Iridium UpgradeCR7HIX
Gap0.028"
Verified fitLast checked
Sources: NGK powersports application catalogue
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.

Buy the plugs for your Yamaha YFM100 Champ

The standard plug is the exact-fit replacement. The iridium version drops into the same spot, lasts longer, and fires a little stronger for a few dollars more. Many engines take more than one - check how many cylinders you have.

Shop the CR7HSA plugStandard NGK plug + multi-packsShop Upgrade: CR7HIX iridiumLonger life, stronger sparkShop

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Frequently asked

What spark plug does a Yamaha YFM100 Champ take?

The Yamaha YFM100 Champ takes an NGK CR7HSA spark plug, gapped to 0.028 inch. The iridium upgrade is the CR7HIX.

What is the spark plug gap for a Yamaha YFM100 Champ?

The spark plug gap for the Yamaha YFM100 Champ is 0.028 inch. Check and set the gap before fitting a new plug - most powersports plugs need a small adjustment out of the box.

Can I use an iridium plug in a Yamaha YFM100 Champ?

Yes. The CR7HIX is the iridium version of the CR7HSA - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.

More parts for your Yamaha YFM100 Champ

We cover the other consumables for your machine too - the exact fit, cited, in one place.

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