1976 Evinrude 6hp 6604a

[racerone]

???------15 times.---Is the high speed jet that is screwed into the bottom of the bowl clean ?-------Note ---All the fuel for operation comes through the high speed jet.-----This jet is about 5/8" long with a 1/4-20 NC thread on it.

 

[Jdurrance]

It is all clear. I could get it out. Won't spin out. But it is perfectly clear.

 

[racerone]

What happens when you remove the carburetor drain plug and then squeeze the bulb.---Does fuel pour out ?

 

[Jdurrance]

Yes it does.

 

[racerone]

Her I have about 6 of those carburetors or more.-----Would simply put another one on !----So I think you need to revisit your carburetor work !!!

 

[AlTn]

+1 with racer...few points on that carb...did yours have the cork float or has it been replaced with a plastic float?...does the tab on the float arm point towards the carb body when the carb is right side up?...carb inverted, is the float parallel with the carb body?...is the inlet needle all metal or rubber tipped?...did you apply the needle valve pull off clip < shepard's crook >?...carb body and float bowl apart, do you see a passageway in the outer casting of the carb body that remains open when the bowl gasket is in place?..< a 5th. hole that isn't thread for a bowl screw >...that passage leads to the mixing chamber for the idle circuit< I believe racer has already described this >...if you'll remove your idle mixture needle and the core plug on top of the carb, you can really clean that circuit and the 3 or 4 small holes that enter the carb throat behind the throttle butterfly...all of that needs to be clear of deposits and fuel varnish...set the idle mixture needle at 1 and 1/2 turns out from a light seat for a beginning point... I went round an round with a 6 hp. carb and the final solution was to reinstall the cork float, for whatever reason it would work when the plastic one wouldn't...I've got a personal distaste for the rubber tipped needle valves in use with 2 stroke fuel mix using ethanol mixed gas...this includes weed eaters and blowers as well..

 

[Jdurrance]

Yes I changed the cork float. It pretty much crumbled. The tab on the float is on the backside. I flipped the float over and that tab keeps it from just falling. The clip for the needle valve is all metal. The 5th hole is clear. I pulled the core plug all clean.

 

[AlTn]

unclear as to what you are saying concerning the float?..float bowl off and carb body upright...the float is supposed to drop down..or is that what you're saying it does?..the needle valve itself..is it rubber tipped?

 

[Jdurrance]

It does drop and the needle valve is not rubber tipped. So it drops down when upright.

 

[AlTn]

welp....the fuel level in the bowl and the idle mixture are about all that's adjustabe on that carb...let's go to starting procedure...gearcase in neutral..throttle advanced as far as it will go < to the neutral stop >..choke pulled fully on..it should at least make a huff or two within 5 pulls...once it tries to start, push the choke off and try to start it....if you've been using the START marking on your throttle handle, try the procedure I described instead...post back if this doesn't help

 

[racerone]

????-----Need to check whether the 6 HP models are equipped with a " nuetral stop " set-up.----It may not have that feature !

 

[Jdurrance]

Oh ok the throttle goes all the way open and closed there's no stop on it. Just threw me for a loop there.

 

[AlTn]

ok...no stop...open it 1/8 throttle or more and try...naturally you'll have to cut the rpm's back when and if it starts

 

[Jdurrance]

Ya every now and then I get a almost a spark. When I crank it it's got that wants to fire type sound. I'll try it though.

 

[Jdurrance]

Well update it will start when I spray fuel into the carb and keep running as long as I keep spraying fuel. Squeezing the bulb Dosebt do anything. It seems to be running just off the fuel I spray nothing else.

Thank.

 

[oldboat1]

When you squeeze the bulb to prime the carb, you should hear fuel going into the carb. If your fuel pump is blocked (incorrect assembly, perhaps), no fuel will get to the carb. I would pull off the hose from pump to carb, and squeeze the bulb -- fuel should squirt out.

 

[Jdurrance]

It does when I do. And when I pull the drain plug off the bowl and prime it fuel squirts out of the bowl.

 

[oldboat1]

Your carb should have an idle adjustment needle, unless a PO put on another carb. Did you open the needle about a turn (about 1 1/2 to start)?

 

[Jdurrance]

Yes. The tip is still in tact as well

 

[oldboat1]

domed plug on top gives access for cleaning -- guessing you got in there. Might remove the needle and insert the nozzle from a can of spray cleaner, and just blow it out a little again.