Okay, I finally found it on the Kawasaki website, the stock output for the alternator is 15 amps..... I know most lawnmowers that use a electric PTO for the blades put out 20 amps.
Kawasaki still sells the big 50 amp alternator kit for this 4010.. but it's anywhere from $300-500 bucks.
Get WD-40 or similar... something that the engine can burn as fuel.... gasoline not recommended though.
In a TRIGGER spray bottle, no aresol can. and spray the WD-40 around where the carb mounts and intake gaskets. if there is any change in engine speed or it blows smoke, you have a gasket leaking...
Be sure to spray the area liberally.
I was able to get a part number for the axles and what other machines they fit.
Land Pride Part #826-456C
REAR AXLE SHFT ST, 24T INT.SPL - Price: Call For Price
This part appears in the following assemblies - click on any assembly to view and order the part:
Manufacturer: Land Pride
Model: Treker 4420ST
Assembly: Transaxle Rear and Axle Shafts
Manufacturer: Land Pride
Model: Treker 4220ST
Assembly: Transaxle Rear and Axle Shafts
Manufacturer: Land Pride
Model: Treker 4410ST
Assembly: Transaxle Rear and Axle Shafts
Manufacturer: Land Pride
Model: Treker 4210ST
Assembly: Transaxle Rear and Axle Shafts
Don't see why it wouldn't work...
But (there's always a but). I'm not sure if having to charge two batteries and run lights....might be over tasking the alternator a bit...I don't know..
I tried to find what amperage the 4010 Alt is but no luck. I think stock they are usually between 9 and 20 Amp
Couldn't find any info if the two belts will interchange, but i did look up aftermarket for the 2018, I searched through Gates website,, high quality belts.
Gates shows 31G3569 G for the CVT drive belt for the 750,
I guess go back to the basics.....
Fuel
Spark (at the correct time)
And Compression
What I would do is fit an Inline spark tester to the plug wires, and when it won't restart, crank it over and see if you're getting a constant spark.or intermittent...
https://www.amazon.com/Lisle-20610-Inline-Spark-Tester/dp/B0002STSC6
Try pushing the gas peddle down to the floor when starting, and let off as soon as it starts...my mule has been similar as long as I can remember, but hold the pedal down and it would probably start right up in the north pole!
One thing I would do is pull your spark plugs out and check them to be sure you aren't running too lean..
3600 is pretty much the standard for Max rpm for small 1 or twin cylinder engines, Some manufacturers will governor them to 3600Max, but they are usually safe up to 3800-4000 rpm...
I was told this by a guy I know who is a Briggs and Stratton MST,, Kohler and Briggs and Stratton found that with the RPM set at 3600 is where the highest torque/power produced at the lowest revolutions... So in a sense more efficient and less wear on the engine.