As a widow, I send in my 2016 Z125E Kabota mower to the dealership for routine maintenance in the Spring. By mid mowing season, it won't start anymore without me using carburetor choke cleaner. I know this is not good for my carburetor. What do I need to ask the dealership to do to correct and prevent this problem from reoccurring this summer? When they bring it back, it'll be working fine, but it will develop the problem again. I really can't afford to send it back and forth---it's $45 bucks for them to transport the mower plus service and parts charges. Any suggestions about what is causing this problem?
You should have bought a KUBOTA instead...more reliable
Also avoid cheap gas and/or drain the fuel tank dry and run the machine until empty before storage
Another option is to keep the fuel tank full with ethanol-free gas prior to storage, then make sure to run the engine at least once a month.
A third option is to buy a service manual and learn to clean your own carb.
Some gasolines will form crystals in the carb and plug the jets after sitting unused for a long time. Some guys swear that using magic foo foo dust snake oil stabilizers work for them as well as using stuff like lucas oil, STP, royal purple oil and other junk. I've rarely had issues with the above suggestions.
A fourth option is to go diesel. Knocking on wood - Kubota diesels have been extremely reliable for me. Makes for great after shave lotion, but gasoline tastes better.