Hi and welcome to FixYa,
Initially, for a no spark concern on a 1990 Honda CBR1000F, checks would be on:
- presence of ignition +12 on the black/white wires to the ignition coil;
- presence of pulsating voltage on the yellow/blue and blue/yellow wires to the ignition coil;
- presence of pulsating low voltage between the yellow and white/yellow wires coming from the ignition pulse generator;
- status of light green wire from neutral switch/indicator;
- status of green/white wire from sidestand switch; or
- try starting with the sidestand folded up and/or the clutch lever pulled in.
Good luck and thank you for asking FixYa.
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