I have the spanner wrench from H-D to adjust the shocks but am unable to get a tool on the lock nut to loosen it. No, I don't have a lift. Trying to work just on the side stand & cannot come up with the proper tool.
Any suggestions?

 

Never did it myself but from the manual it looks like the jam nut is a regular nut, maybe a 5/8 or thereabouts. It's right in front of the adjuster plate.

BTW, it says they should be adjusted with the bike on the jiffy stand so you're good to go there.

edit: just took a look at mine and the jam nut looks to be more like 3/4". Looks fairly accessible but I didn't try to put a wrench on it. May indeed have to get the bike in the air to loosen it or maybe a stubby wrench or crows foot?

 

I rode my wife's 09 Softail deluxe up on 2 pieces of 2x6 and another piece to put the jiffy stand down on and I had plenty of room to loosen the jam nut with the Harley spanner wrench....

Trucky911

 

I think it's a 7/8" but I haven't adjusted mine in a year or so. 3 full turns for 2 up riding works great. 4 is nice and firm. I'm basing this on 325 lbs of flesh 2 up.

 

I have a lift,but don't use it to adjust my shocks. I do it with it on the jiffy stand.
My 2005 SE Fat Boy is an 1" lower in the rear then your bike, so I have less clearance then you do.
You need a 1-1/8" open end wrench for the retention nuts. I cut the handle down on my wrench so it is just 6" in overall length.
If your retention nuts have never been broke loose, they probably still have loctite holding them in place, so you may have to heat them up with a heat gun or hair dryer in order to break them loose.
Once you get the retention nuts loose and adjust the shocks, which are a PITA the first time, after that it takes less then 5 minutes to adjust them from there on.
Tom

 

I think you're right on the 1 1/8 open end. I knew it was large!