Same thing, though the Kohler might have two coils if it's a V-twin (jut one if it's a "boxer"). Using that same tester on the Mule may reveal something. The resistance tests shown in the manual should be pretty positive.
$43 (w/ free shipping) on eBay for a new genuine Kawasaki part.--p/n 21171-7035 is what you want:
Interesting little beasts, these earlty mules--only 400 cc, not much HP (10.5 @2400)--but GOBS of torque at low rpm (22 lb·ft @ that same 2400 rpm!!!).
Peak torque on my 24.4 HP (@ 7500 rpm) Hisun 400 is only 17.1 lb·ft☹️--also @ 7500 rpm, which in reality is an engine speed the CVT will never allow (except maybe when "pedal-to-metal" on an open road somewhere). I suspect real Hp that actually makes it to te ground is more like 15-18. Rubberband CVT efficiency is just 40 to 80% or so depending on a number of factors (drive ratio, belt stiffness, etc.) In general hihger "gears" (numerically lower input--> output ratios) are the least efficient.
Here are some interesting charts from a great study "The analysis of an influence of rubber V-belt physical properties on CVT efficiency" by A Kot W Grzegożek and W Szczypiński-Sala of the Cracow University of Technology:
(belt "A" is the most flexible tested, belt "C" the least)