G'day Steve and AVB,

The Coil reading is ok ,you could run the motor and wait until the motor cuts out and then check for spark.

I've had spark plugs and fuel filters that look fine but they fail in 5 to 15 minutes so I would replace them first or
use ones from another mower that you know work well.

https://www.familyhandyman.com/project/how-to-test-an-ignition-coil/

Cheers
Max.