About 5 minutesWelcome to iboats
When it does the Bog, how long after starting did it run before you gave it throttle?
Oh boy...which one is low speed on the carbs?Open low speed mixture needles 1/8th turn and test.----Repeat as needed.
Wait. I thought you said it was fine for about an hour?About 5 minutes
True. Going richer shouldn't hurt anything except a bit more smoke and maybe fouled plugs. But I don't think we have enough info. from this person yet to send him into doing something that he's not even familiar/confortable with.Some will argue.-----Opening low speed mixture needles often cures bogging.-----Costs no beer tokens to test.
It does it after about ten minutes.It does this from the start? Or after 5 minutes? Or after an hour? You haven't cleared that up yet.
Is something wrapped around your prop. shaft?
Fouled spark plug(s)?
Low compression?
Fuel restriction? (crap in filter or quick connector or carbs)
Exhaust restriction? (carbon buildup)
Coil(s) going bad?
Yes...its normalI asked before but you didn't answer.
Is the impeller peeing water normally?
And my other questions?Yes...its normal
Lots of low-rpm running and/or excess oil mixed into the fuel can cause this.i would say you have gummed up plugs or a internal carbon problem ,