IF I understand you correctly.... are you just swapping the ignition?? or complete power head??
Either way; Your "Mechanic" has it wrong!
up to 1999 Force/Merc. had certain components in common.
A 2004 for sure NOT
The engine needs to run for it to shift; do not force the shifter when engine is off!!!
Further adjustment can be made on the other end of the shifter-cable (in/on the control-box)
I did a quick search (tried to copy & paste, but did not work. however the product you found is the correct one and it has the explanation of the hook-up
Yup, not when you're running on muffs
As racerone mentioned; the lines could be jammed with debris
and may slip shut by being cramped together by the water pushing it.
Reverse the water flow or pull the water jacket
I moved on and swapped the whole "tested good" assembly from the spare over to motor on the boat.
Got the motor to run but with the drop down test I noticed #4 is not firing, likely a broken wire during set over. we'll see :{
:D yeah, I discovered this by running a late '70's Merc. with no LU and it did the exact same thing.
and for cooling.......I had shoved a garden-hose onto the copper water-tube.
Man, it was loud!!!! without having water as a sound damper. lol
No, behind the screens from the recirculating.
Carefully remove the screens and you'll see a tiny hole, poke with stiff wire through or blow compressed air through