A few questions for you.
Scag Tiger Cat or Tiger Cat II?
I'm not sure if the Tiger Cat II is available yet.
I assume that you are considering a 52" or 61" deck model as they are the only models with Kohler EFI or Kawasaki FX engines.
As ZTRs are dusty by design, the two stage air filtration system is a must. Both the Kohler and Kawi have this type of air filter.
The Kohler EFI engine has an onboard computer electronic fuel management system as it is has electronic fuel injection.
The EFI system has an additional electric fuel pump to raise the fuel pressure that is supplied to the EFI system.
Diagnosing EFI engine problems requires the use of a computer with the Kohler software installed.
Generally this is done by a Kohler servicing dealer when needed.
The Kawasaki FX engines have a carb which doesn't need to be electronically controlled and only needs the engine mounted pulse fuel pump.
I have no experience with Kohler EFI engines, but some experience with Kawasaki FX engines.
Some of my fellow lawn care buddies have Kohler EFI powered Scag Turf Tigers and for the most part are satisfied with them.
I also own a Hustler X-ONE/60" rear discharge deck, with a Kawasaki 730FX engine. This is one sweet running engine, machine now has about 350 hours on it and is a 2012 model used primarily for cemetery duty.
I also have a Scag Tiger Cub/48" deck, collection system, 30 HP Briggs Commercial Turf engine. This machine had been repowered in 2013 as the original Briggs Intek had a problem.
Another thought, along with the collection system on my Tiger Cub, I have a JRCO 46" front mounted de-thatcher. This combination is fantastic for both spring and fall cleanup!!!
Make sure that the Tiger Cat that you are looking at has the adjustable suspension seat on it, great seat!!!
A few thoughts from Mad Mackie in CT:laughing::biggrin::smile: