Gentron pro2 won't crank

SOURCE: Gentron 10000w portable generator w/electric start cranks but wont start

check for low oil some have a low oil shut off system

SOURCE: gentron pro2 6000p has no spark

With small engines, ignition is magneto. Four things can cause a lack of spark: (1) Faulty plug - try a new plug; (2) Bad, shorting, or disconnected spark plug wire - check for high voltage from ignition coil; (3) Bad ignition coil - check for low voltage at the coil input wires; (4) Magneto failure - the pickup coils next to the flywheel may be shorted, loose, or disconnected, OR the magnets on the flywheel may have lost their field or come out. I would troubleshoot this problem by checking and eliminating each of these possibilities in the above order. If all of the first three check out good; I'd have a mechanic check the magneto because this requires at least partial disassembly of the motor.