89 Fzr 600 wont start

What is the condition and age of the battery? I would start with charging it and checking for holding the charge first if unsure. Then check for other suspects like starter relay/solenoid or starter itself.

Too much fuel is getting through the carbs. The carbs either need setting up properly or the correct size jets refitting.

carefully check plug leads and caps for cracks and shorting, there can be a small resister in the cap that can burn out, check by unscrewing the small brass clip that clips it to the spark plug inside the cap

the light will stay on until it gets oil pressure ie: when it starts, there is no oil cutoff switch

Measure with a voltmeter the charging circuit for normal operation (battery, regulator/rectifier and generator).

If the bikes charging system is not working there will be no power to the coils, and no spark (once the battery is drained). Try putting a good, fully charged battery in the bike and check the charging system.

There are certainly several things that could cause the symptoms you describe. Based on the information you have provided that is what I would check first.

You have to check the starter motor,prolly the brushes are gone . Also check the connections from battery to the solenoid and from the solenoid to the starter.

Good Luck.
Knight (Yamaha seca XJ750A 1981)

the floats in the carb are stuck. you can try lightly tapping on the carb with a screwdriver that should do the trick.