Before trying that Generator function test you can check Voltage @ the battery terminals before starting, it should be over 12 V. approx. depending on battery charge.
Then @ wide open governed rpm---3600 approx,
You should get a little over 14V. approx if the system is performing properly.
12.6 volts tested after a battery has rested 24 hours (neither charged or discharged) is considered fully charged.
That said I have seen less and they worked ok as older batteries sometimes will not come up to that voltage, but close.
You might be experiencing an older battery condition and not sufficient time to recharge between starts.
Does it eventually not start and needs to be put on a charger or just seems to turn over slower after multiple starts?
---Are we jumping the gun and it works ok but you just wanted a polarizing question answered?
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