Can't go over 2500 rpm's?

[nymack66]

Please check for spark on all cylinders, Double check all connectors to your packs; Looks like you are running on 3 cylinders not 6 may be one pack is blown. You will have to test will find it. Also observe the movement of the advance (under fly wheel) make sure it moves freely back and forth. Ferm, Skool where are you guys ? Help !!

[macojoe]

Spark ok on all 6 plugs, all connectors are good, all linkage is moving to there stops, throttle, timing advance, and choke.

Talked to skools on the phone 1 hour ago, he thinks wire harness, or stator?? But says to do the wire harness first as I have some issues there.

I have a brand new harness for the boat side, and BS is going to bring me the motor side. But I have to wait for Friday for him to get here. That's ok going to blow tomorrow and rain all day Thursday.

[tsubaki]

I don't understand how this problem presented itself without some prompting.
Did any wires somehow get arced, grounded or shorted? Normally that would damage a powerpack.
If it was the magnets shifting in the flywheel it wouldn't run or at best run like crap.
Whatever it is, at least it happened in the yard and not offshore.
Look at it that way.

[macojoe]

BS and I were fixing the shifter and had the cowling off and hanging, that might have broke a wire waiting to happen?? There seems to be a few like that, that the old owner just taped up.

[nymack66]

Disconnect both tan wires and ground one at a time to the lock with the key switch on, your buzzer should sound. If no buzzer then its possible the tan wire is currently shorted out shorted (no buzzer working) and is holding the motor within the "low load range of 2500 rpm”?
Also can you turn the prop freely in Natural? Maybe the lower unit is broken and is locking? Reason why I mentioned the lower unit is because of the shifting issue.

[macojoe]

The lower unit is fine right now.

No buzzer so that test isn't going to work, but the book says to disconnect the tan wires from the censors and try it, I did today and still the same.

Thanks!!

[nymack66]

The TAN wire is spliced in the harness you just can’t see it, it connected back to the power packs to limit spark in the event there is a short (over heat, low oil etc) to protect the engine. If this wire is disconnected but still creating a ground it will continue to act like it should in this case limiting you to a low RPM, the other is the buzzer since you don't have a buzzer maybe just maybe this part of its function is working! My thoughts are to unplug the round connector and tone the tan wire out, single pin from the connector back to both ends of the TAN wires make sure it has no connection or fault to ground hope this makes some sense. Also it will not hurt to lubricate the round red plug connector when you unplug it. I really don't think it is your Stator period.

[steplift20]

heres a stupid suggestion do you have the right prop size? to big and it wont go fast

[spareparts]

if its too much pitch, it wont allow the engine to rev to a higher rpm where it makes more power, you can step down in pitch and make more speed if the engine wasn't turning enough rpm