re: another small engine isn't starting question....

Sorry it's push mower not rider I'm tired flying in from Arizona.

Check carb - if take air filter off spray carb cleaner in air intake and if it cranks that is your problem the carb. Been awhile since I fixed Kohler engine on push mower that husqvarna mfg craftsman. That carb if i remember not that expensive to replace most Kohler dealers can hook up you up or buy it online. You can rebuild it but savings not worth it.

If not sparking- there is a ignition coil by flywheel and it has wire that goes to spark plug. Check gap between flywheel magnet and ignition coil. If you loosen the screws on the ignition it will stick to magnet on flywheel so put business card between both. Typivally you can put a business card between the gap and that should be good. If that don't work it could be the ignition is bad but on Kohler I don't see that a lot.