Can cold weather affect the spark on my Toto walkbehind lawnmower? I;ve checked for worn wires that might be shorting the electricalsystem and...

I;ve checked for worn wires that might be shorting the electricalsystem and removed the wire from the magneto connected to the flywheel braking switch and still no spark. The gadget was running fine contained by September when the weather was thaw out.
Home A/C (central) problem ??
Answers:    You didn't say how mature your machine is,or what brand engine it have. So we don't know if it has breaker points or not. Going on the assumption it indeed have points, replace them. If it is breakerless The coil (module) must be replaced. I suggest you go to this site and enter your engine model & spec #. This should detail you if your engine has points or not.
http://milacalawn.com
Replacing a container?
in general the other way around. Hot weather offer more resistance than cold. Look for oxidized points(oxidation is like rust but not example pennies oxidize and travel from shiny metallic copper to dull not so mettallic finish. Points get spark arcing accross them and will lose their shine like a shot and also lose the conductivity needed to carry the current for the spark plug. That or the ground have been lost which is neede to complete the circuit.