Question about the content of a mig-15 placard

[uboats]

On the top right side of the central panel, there is a placard saying 'ЗАПУСК В ВОЗДУХЕ ПРОИЗВЕЛ, ЗАЖИГАНИ ВЫКЛЮЧИ'.

 

I'm not a Russian speaker, and Google translation gave me 'STARTING IN THE AIR produced, the ignition is off'.

 

I'm a little bit confused that whether the ignition should be switched off BEFORE/AFTER the air-start?

 

Your help is highly appreciated! :)

[D. T.]

After, of course. Correct translation is "Turn the ignition off!". This is the imperative mood.

[uboats]

After, of course. Correct translation is "Turn the ignition off!". This is the imperative mood.

 

thank you