Spark Plugs for 2005 Mercury 125

**DonDon** · 11-20-2014, 10:01 PM

Thanks. Didn't kniw hat

Originally Posted by BigRiverMarine

Oh yeah, the -10 on the end of the plug number means it's pre gapped. Still might check the gap tho.

**kycreek** · 11-23-2014, 09:50 AM

Good info, I had no idea. Does that mean .010 ?

**BigRiverMarine** · 11-23-2014, 10:33 AM

Originally Posted by kycreekboy

Good info, I had no idea. Does that mean .010 ?

Don't know what the pre set gap is, that's why I said to check them with the engines recommended gap.

A plug with the same number minus the -10 just means it isn't pre gapped, and can still replace the dash 10 plugs after you gap them.

ALWAYS replace your plugs with the recommended Brand. No cross referenced brand should be used.

I thought Merc recommended Champion, but that could be Johnson/Evinrude that does.

**Cray** · 11-23-2014, 12:07 PM

Originally Posted by Rees Guide

This may result in false results cause there will be cussing fire or no fire!!!!!!!!!

You guys rough on a old guy

**Cray** · 11-23-2014, 12:09 PM

Originally Posted by BigRiverMarine

Don't know what the pre set gap is, that's why I said to check them with the engines recommended gap.

A plug with the same number minus the -10 just means it isn't pre gapped, and can still replace the dash 10 plugs after you gap them.
ALWAYS replace your plugs with the recommended Brand. No cross referenced brand should be used.

I thought Merc recommended Champion, but that could be Johnson/Evinrude that does.

OMC has always been Champ. Don't have a clue on them new motors.

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