How to Change Spark Plugs on a Harley Davidson Road King

Check out this step-by-step guide on how to change the spark plugs on a 2008 Harley Davidson Road King Classic. Our straightforward instructions will give you the confidence to tackle this essential maintenance task. Don't forget to hit the Thumbs Up button to show your support, and I truly appreciate all the positive feedback from the Harley community. Let's keep our bikes running smoothly together. Thanks for watching!
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[@williamsjeffrey9256]

😊Thank you

[@-MrRichBiker1967]

Thank you, great job....... PS... Never use a torque wrench like a normal ratchet.plug gap; 0.38-0.43. (thousands of an inch)

[@mhough3]

Do the spark plugs usually require adjustment (gap), and what do you mean don’t use the torque wrench like a ratchet?

[@209er2]

@@mhough3 99 percent of time spark plug gap will be set already

[@brettjohnson130]

Thanks

[@mhough3]

Thanks for the video! Does it say anywhere in the service manual what size wrench to use?

[@SPDBIKER]

Don't think it states the size but it should be 11/16ths

[@rdbgrit]

So it's not like the newer M8 engines with 4 plugs?

[@SPDBIKER]

No, this only applies to pre M8 engines

[@98chicagobears]

HEY STEVE DO YOU KNOW HOW TO CHANGE THE SPARK PLUG CABLE CAN ONE DO IT WITHOUT REMOVING THE GAS TANK.

[@SPDBIKER]

I wouldn't do it without removing or at least loosening and lifting the tank up and sitting it on top of the front mounts otherwise you could damage the plugs connectors and or connector as it is a tight space

[@Timeline916]

Can you do a triumph?

[@SPDBIKER]

Hi, not sure on the specifics but the process should be the same.

[@rudydln]

HOW ABOUT THE OTHER TWO???????

[@SPDBIKER]

Other two what?

[@209er2]

Hes doing the standard twin cam engine, not the m8