Re: 9r73b Intake gaskets needed-anyone???
... Now to figure out why Im getting surges at low idle speed, almost like cough that make it stall out unless I put the rev up a bit more...I have rebuilt the carb and it runs really good at all other rpms, just when I want it idle really low after it warms up. Points maybe? Thanks again...
Those 9? motors had fixed high speed & adjustable low speed jets on the carburetor; have you tried fine tuning the low speed adjustment to see if you can have any effect on the low speed "cough" ?
I would also try to see if the cough still happens while trolling with the cowling removed. Others mentioned those turtleback motors having numerous parts unique unto themselves. In particular those motors used rubber bellows in the midsection. Of course those bellows are NLA. If your bellows are ripped, cracked or otherwise not airtight they will allows exhaust fumes to be drawn up the leg at idle and mess up the running. Remember that at close range those exhaust fumes already have the oxygen depleted from combustion and therefore the fumes will not support more combustion if your motor tries to breathe it in, hence the low speed running problems. So try running the motor at idle with the lid off and see if the problem goes away.
A lot of people think that those motors are ugly, but personally I have used numerous 9? motors over the years and found them to be marvelous motors for fishing. They have numerous features not found on other motors, are convenient, compact, lightweight (60 lbs.), well balanced and easy to carry. I am a fan if you haven't guessed by now. Dad bought one new in 1965 and used it into the 1990s until he broke his pelvis falling from the roof of the house onto the gunwale of his Nalco cartop boat, damaging the boat and thus making him use other boats & motors he had. He gave his 9? to a generous hunting & fishing buddy and as far as I know it is still going strong (it has a LOT of hours on it).
