Agree with above posts!
As to carb, "If it ain't broke, don't fix it," might apply. A controversial opinion, Kawasaki did a pretty good job in specifying a Keihin carburetor jetting for universal application. Compromises? Surely, but . . . expectations of limitless "free" additional power and unbelievable fuel mileage from jetting changes appear unrealistically optimistic, to me. (Full disclosure: Did perform 22-cent carb mod; satisfied with that modest tuning, but surely could live without it. )
Tilting the carb to disassemble works (if your curiosity burns to that extent), but, as mentioned above, the plastic "choke" (starting enricher) cable plastic nut at the carb body is at risk if not disconnected during the process. Then, re-connecting the plastic nut to the carb casting in the limited space available remains a challenge, in my experience.
You've been briefed above on tank removal; upon re-assembly, remember: TWO hoses, fuel and vacuum, must be connected to the carb for the bike to run as planned.
Catastrophic collateral damage from grenading idler shaft lever ('doohickey") unlikely on stock latter-day KLRs; spring tension limitations reported, but . . . not the "time bomb" hazard of Generation 1 design (IMHO).
Good luck with your care and feeding (and riding) of your KLR!
ďYou better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, youíre gonna be dead.Ē "John Russell" (Paul Newman), Hombre