T110

Hi I’m new here. I have a problem on the start stop run buttons on my t110. Can these be purchased separately?. My machine is keyless. Sometimes I try to turn the machine off I need to press stop many times before it works. The engine will always stop but the power comes back on waiting for me to start it. Also has trouble starting. Brand new starter battery has lots of juice 14v. Any suggestions? I can jump the starter and it turns the engine no problem. If I hit the start button it just clicks some times it engages the starter and fires. This problem is way more noticble in the colder weather.