Posting this in hopes someone may know the answer.
Mostly on initial startup, engine will start immediately then die after 15-20 seconds. Engine will not restart. It starts and stalls or won’t start at all. Recycling computer doesn’t work. By moving gear shifter slightly too either forward or reverse, you can then get it to start. Sometimes either forward or reverse is not able to be shifted. Its stuck in that gear, possibly. It can take several attempts to get it to run. I believe what is happening is the engine will start initially but then gets stuck in gear.
The cable adjustment has been checked and verified. I am taking it too another dealer also. It has stumped everyone, I've talked to.
Also this is my 2nd power head and the issue occured with both power heads. The replacement power head was fully dressed.
For the starting then dying, as a tech I would check the vapor separator tank vent, software updates, system voltage, and capacitor connections. Stuck in gear and moving the shifter slightly to forward or reverse sounds like an adjustment is not correct, possibly shift rod height. If the shift rod is not set correctly and a tech tries to correct it with cable adjustment, this can put the gear position switch off center. Does this engine have a tiller or is it a BRP remote shift/throttle?
Ask the dealer to check the 3 oil recirculation check valves. They can stick and allow excess oil to drain back into the crankcase causing a hard to start when cold condition. There is a TST (service tip) published on this. Also check for a recently released software update to improve idle performance.
Usually shift rod height can be adjusted out with the cables but if the shift rod is more than two turns off this method throws everything out of sync. When in neutral the shift lever on the engine that the cable connects to should be verticle. You can judge this by looking at the line where the intake manifold or case halves join together and see if the center line of the lever is parallel.
Picked up boat last night from different dealer. They found the shift rod height in lower unit to be too high, while replacing impeller. They re-adjusted shifter trunion/cable also. Hopefully this cures the problem. He test started several different times and said it fired right up everytime. Dealer is 15 miles darther away but seems to know motors a lot better. I recieved an engine report also and everything looks good.
"NOT A RANT" If there was anything Evinrude could improve on is better training and oversight of their dealer service tech's.