Yes, you could but you would damage any electronics on the truck that were on when you jump start the vehicle. I would advise against it.
Yes, but you may damage some of the electronics.
No
No
As long as the battery in the lawnmower is a 12 Volt battery you will be fine.
Electrically there is no reason why not .
I would not I would buy a 12 volt charger and plug it in for a day
The 1952 Dodge truck line used a 6 volt electical system with a generator.
12 volt standard, 24 volt optional.
If you jump a car or other vehicle with a 6 volt electrical system using a 12 volt battery, you can blow out the 6 volt battery. When they are connected, it usually only takes a fraction of a second to start the six volt system. There should be a person ready to start the 6 volt system immediately if not sooner so the 12 volt system can be disconnected immediately before the battery overheats and burns out.
Originally it would have been a 6 volt system.
12 volt
it depends on the truck some trucks are 24v starting some are 12 volt start