Suitable plug spanner/ Plug gap - is it a thing anymore?

Alan Richard · Oct 18, 2021

Hi.
Looking at the coils on these 821's I guess the plug lives a long way down the hole.
Can anyone point me in the direction of a recommended plug spanner. (delivery to UK)

Also - Is there a correct spark plug gap for these? Or do these twin-earth plugs come pre-gapped?

Thanks all.

A

hyperbruno · Oct 18, 2021

There’s one in your tool bag under your seat. You can buy a 14mm plug socket (they’re longer with a rubber insert that grabs the plug when it’s loose) + socket extension. I’ve never set gap on new plugs but AFAIK the gap is already set (compared owners manual and ngk docs)

gatdammit · Oct 18, 2021

Maybe the old guy in me, but you should always check the gap before installing. A lot of times those little cardboard spools that protect the electrode get tossed if someone opens the package, or those flimsy packages come loose and the plug falls out, etc. The gap tools are like a buck and usually sitting next to every register at an autoparts store.

Alan Richard · Oct 19, 2021

Thanks for the tips.
I couldn't see a gap size in the owners manual.
I didn't check the toolbag either! - I didn't think I could get it back in the same shape that I took it off.
I'll go shopping for a 14mm long reach plug spanner.
Cheers gents.

gatdammit · Oct 19, 2021

I either found the gap size online or from the workshop manual.

Alan Richard · Oct 19, 2021

0.8mm?

I came across this site in my trawls.

Ducati Spark Plug Fitment Chart

We've scoured the internet to collate all the spark plug fitments for almost all Ducati motorcycles produced in the last two decades. Fill your boots! Table of Contents Ducati Spark Plug Fitment ChartManufacturerModelStandard PlugIridium PlugElectrode GapDUCATI848NGK MAR10A-J 0.8 MMDUCATI998NGK...

bikerrated.com

Useful info (if it's correct - always a danger)

-A

appliance821 · Jun 9, 2022

I've never gapped them - they sure don't seem to be designed to be gapped.

Suitable plug spanner/ Plug gap - is it a thing anymore?

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