Home › Forum › Ask A Member › 1967 sportwin 9_1/2 hp › Reply To: 1967 sportwin 9_1/2 hp

#253805
JACQUES
Participant

    there is no HS screw adjustment like older carbs ….. in a 9.5hp   it is simply a screwed-in mini plug with  a calibrated hole (jet)    it sits behind the bottom bolt you  see  way the  bottom front of the carb.

    The jet IS NOT accessible from the bowl .    twe min jet plug can be unscrewed out but best to just flush it clean with carb cleaner  if you do not  a perfectly fitting tool to unscrew it

    Did you watch the videos I provided ???

    If the engine needs to be choked after all the cleaning you did one must assume  that is it not  “sucking enough air ” to cause vaporization  of fuel out of the LS  drip holes .

    Closing the choke  just concentrates the  available   vacum  on the LS circuit of the carb  and  may simply  loss of a certain % of vacum  via cranckcase seals.

    revisit the vidoes… make certain ALL holes are open  incl.  and  free open ones (if any)  needed to balance atmospheric air pressure and prevent airlocking

    sorry my carbs  are  at the cottage  so I can’t  inspect one closely….

     

    does it idle better if you set the idle RPMS a bit higher with the side knob ??

    Joining AOMCI has priviledges 🙂