I'm in the process of moving Unfortunately, the Service Manual for my 2007 Sportster 1200 Custom has been packed is Gawd-Only-Knows-Where in the new house. I know exactly where all of my tools are, but The Missus packed up my library across a dozen or so different boxes.

In any case, I want to change the spark plugs. I bought a pair from the local HD dealership. What I don't have is the gap and torque specs. If anybody can provide me with that information, both I and Talulah the Sporty thank you.

 

for my 08 it's 12-18 ft lbs and the gap is 0.038-0.043 in, or 0.96-1.09 mm.

 

You might want to use a little anti-seize on those too.

 

Thanks, Curt. I appreciate the info.

 

Welcome. That's coming straight from the HD service manual.

 

interesting. I just bought a new pair of NGK's to replace my plugs on my 2007 883L. I don't have a torque wrench so I just snugged em up. Didn't gap em either. Bike seems to be running great. Hope its cool that I didnt torque them persay

 

never torque my plugs either just make them nice and tight.

 

I torque them every time even in my old F 150-302. Its quite easy to go beyond the recommended torque and either distort the valve seats or warp the head and let the head gasket blow.

 

When I was taught how to do plugs back in the '70's, we gapped the plugs, cleaned up the threads on the head and then screwed in the plug until it was hand tight. At that point, we would turn the plug 1/4 turn and call it a day.

In all of the time that I did plugs, I think I only messed up one head doing that.

Now, I'm older and can afford decent tools. So, if the Service Manual calls for 12-18 ft lbs with a .038 to .043 gap, well, that's what my Talulah deserves and is going to get.

 

That, hand tight and then 90 degrees more was a GM thing I think.