You are correct. If the pur/yel wire is present at the starter wiring harness you need the outside primary stud.
Get the right starter, changing the wiring would be beyond acquiring the correct part
Never tried the dwell setting. I've an old merc o tronic analog for my antiquated ventures
I think I promised a story a while back....did tell, to bondo.
Years ago when I drove a beater I'd pump old, rotten, water contaminated gas out the boat and into the car. Ran fine
But, car does not equal boat.
Remove icky fuel, clean tank best you can, start over fresh.....
Yep
First one was a Mac tools branded one
Got the above pic/mentioned one via Cornwell, I think brand is Innova?
In any case, current light provides ample support for investigation
Based on info provided, fuel supply sounds like a likely culprit but would not rule out shifting system, mainly lower cable binding causing shift interrupt switch engagement incorrectly
I love my timing lite
It's the second advance light I've owned, first one suffered from belt/wire introduction. What a mess....
Definitely use much care with your wired light, it has many uses beyond checking/setting timing. The rpm factor alone helps immensely with troubleshooting
Merc 4.3L with carb used electric fuel pumps for a bit as well, along with some 5.0 and 5.7
OP mentions the "overflow/vacuum line" which to me indicates a mechanical pump. You posted a link to a mechanical pump yet mention an electric?
FYI OP, the clear yellow line isn't a vacuum line, just an...
Unknown if part number is correct but will say if there is fluid in the overflow (yellow, plastic) line you'd best inspect what said fluid is
If it's fuel, yep time a replace the fuel pump. If only oil, may just need a new gasket
9565 is the key # in your carb number sequence. Kit is available through mercury, sorry dunno the part number rn. Only reason I say this is I rebuilded a 9565 last week, easy
