I appreciate the reply and thoughts.... sometimes you need to set a job aside and spend some time thinking and hearing ideas.... I have been troubleshooting carbs a long time and these are some of the simplest which in itself can frustrate.
At times thinking out loud gets a person back on track
Well after cleaning last night and let set till today ... was able to properly set #4 this am... also may have been trying to set idle a little low .... may have been something lingering in one of the body passages..... but apparently cleared now.
Just went thru carbs all passages cleaned reinstalled and synched.
Here is confusing part .... engine runs perfect , but the idle mix screw on #4 carb has to be turned practically out to smooth the idle.... it has always been this way.... just removed and went over idle circuit again.... no...
On inspection there is lots of depth and thread for an extended length plug .... now just need to find one.
Edit... on closer inspection... only on one side... but I see there may be a 9mm plug available to go to larger thread
Update .... still have not found a drive that would for sure fit.
In the mean time I pulled the drive to do measurements... and the drive felt fine as far as not feeling rough or worn .... and started thinking that the grease may have started to dry out... over 25 years old... so put it in...
.ya it looks like aftermarket starters are readily available in all price ranges ..... all I really need is a drive or bending.... and it looks like drives are available.... the trouble is having confidence in fit
Thread update.
I have been using engine daily for the last week... oil is completely clear.
After a few hrs use and cool down, I can remove hose and drain a couple tablespoons of water out of loop.
Engine runs good and strong.... Will likely pull power head this winter and replace head gasket...
So, more testing results ..... fresh oil change .... ran engine in tank for about an hr... let sit overnight and then drained a cup of oil from engine.... in that oil was about a tablespoon of clean water, so condensation.... ran again for about an hr... removed hose from valve cover to...
Bought a bf50 last fall not running.... did some mechanical repairs (crank replace)
Put it on an old boat and started running it at ice out engine runs flawless .
As title indicates I have been getting an abnormal amount of water in oil.
I do spend a lot of time idling with ocationall 1/2 the...