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Removing the crossbar shouldn't affect the setting on the linkage. At both ends where the uprights connect to the crossbar arms, loosen the nuts and pull the upright to the side. Mark where the cable connects to the crossbar center arm and loosen the retainer, and pull out the cable. At this point the crossbar is only held in place by the ball and socket joints at each end. Remove one of the air filters and then remove the filter base the the ball is part of. At that point the crossbar will pretty much fall out. Reassembly is the opposite of disassembly.
CAVEAT: It's been a number of years since I last had to do this process, so I may have missed or messed up a step. Still, it's a simple operation.
Sorry, Lane. If you loosen one of the air cleaner bases and remove the downrods you WILL need to re-synch the carbs.
I've been doing this a long time and I've had them close a bunch of times, but almost never spot-on. Except that one time all the planets aligned and I didn't need to touch it.
It isn't particularly hard to synch, you just need a snail tool and a couple wrenches and a little time.
Thanks for your help guys
FWIW here is the punch list I use when I R&R the alternator on my VS 1915cc. While this set-up may not be exactly like your IM, there is enough similarity to guide you through this process. R&R time for first time will be maybe 2 hrs to remove but it's an easy process.
Click on pic to enlarge.
* Disconnect battery and remove wiring from alternator "Fig E"
* Loosen & remove 19mm nut on pulley. Remove front half of pulley. Remove fan belt. Remove back half of pulley (and a number of spacers/large washers) making sure to remove half-moon shaped woodruff key from alternator shaft "Fig D"
* Loosen and remove alternator strap "Fig C"
* Loosen throttle cable barrel clamp and pull throttle cable from behind fan shroud "Fig B" (this will facilitate lifting fan shroud).
* Loosen & remove bolt/screw holding throttle-cable body to fan shroud and lower attachment to motor case. "Fig B" (if attached with a bolt, use a 10mm wrench, bottom attachment point may require 13mm wrench)
* Loosen and remove remaining 3 bolts/screws of alternator/fan backing plate "Fig F" (if these also are bolts, use 10mm wrench)
* Remove (pop off) throttle linkage on 'Right' carbureter and let it lay on engine tin "Fig H"
* Loosen hose clamps on both sides of fan shroud and pull ducting away from fan shroud "Fig A"
* Remove bolts/screws on bottom of both sides of fan shroud (these attach fan shroud to upper engine tins) "Fig G" If these are bolts, use 10mm wrench or socket)
* With all these attachments removed, you should be able to lift fan shroud just enough (3 to 4 inches) to tilt the upper portion of alternator/fan assembly towards you and lift out of fan shroud opening. Might take a little wiggling of alternator/fan assembly to work out of the shroud opening.
* Take alternator/fan assembly to automotive shop to have them use impact tool/socket to remove bolt holding fan to alternator. Once fan is removed, remove screws/bolts attaching backing plate to alternator.
* With replacement alternator, simply reverse process, beginning with re-installing backing plate onto alternator, having automotive shop use impact tool/socket to attach fan to alternator with bolt.
* Reverse process to install your new alternator/fan assembly.
Hope this gives you an idea of what's involved. It's not hard to do. Best of luck! 
Wow that was very detailed. I have completed the install. I was dealing with the carb crossover rod. Once I figured that out it was clean sailing !
I wish I had had some tech writers as talented as MUSBJIM on some of my projects when I was doing computers.
Some of them might have provided: "Remove the old unit and replace with the new one" as the complete replacement scenario. 😵💫
" MUSBJIM in 2024! "
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