I have a craftsmans lawn tractor w/ a koler engine. Starts up & runs good when cold but stalls when it warms?
Answers:
Check and see if it has a fuel filter. If it does, it is probably clogged. It will be an inline filter.
Other answers:
check your coil and coil wires, they may be shorting out
check your coil and coil wires, they may be shorting out