Reply To: 1956 Evinrude 15hp Throttle Q and Fouling

[Don]

OK, well if both the coils look new, I don’t know what the fabric covered wire could be…Newer coils do not use fabric covered wires…Does this engine have some sort of external stop/safety switch added, perhaps that is the fabric covered wire… You can try using a generic puller with the three bolts going into the flywheel holes…Perhaps the flywheel won’t put up a fight and pop off….But, if it doesn’t want to give up/come off easily, don’t keep wrestling with the generic set up…The bolts will probably snap off and you could get hurt. Sometimes using an impact gun on the center puller bolt helps pop the flywheel off…But again, I wouldn’t go digging into the ignition system until you confirm you have an actual ignition issue. Ripping things apart like this usually ends up adding to confusion and possibly creates new problems…Save the ignition overhaul for winter work unless you confirm there is an ignition issue now. .
Again, the roller might start to turn before the mark bisects the roller, but that does not mean the throttle shaft is actually starting to move/open…There is a lot of slop in that linkage. So, seeing the roller start to turn slightly before the cam bisects the roller sounds correct….Watch the actual throttle shaft and see when it actually starts to move, I’m betting it is fairly close to being correctly set…In any event, even if the adjustment is off a bit, this not going to make the plugs foul. And again, if the carb butterfly is opening too early, this usually has the effect of “lean off idle”, not rich….I know this seems counter intuitive, but is true…But, it is important to note that the carb butterfly must be completely closed at idle speed.