Zenith 13660B

[elmer]

Hello, I was cleaning my carburetor zenith 13660B this morning but I have a problem. I have doubts about how to install some parts. I consulted in two books and I have seen two different ways¿. ?? I am really lost.
I would be very happy if you could inform me if the correct assembly is 1 or 2, Thank you very much. Someone knows how to graduate the float of this carburetor. Thanks
Elmer

Position 1


Position 2

[Hambone]

#2, float has to be set at certain height, don't remember right off hand, someone will chime in.

[Hambone]

9/32" from edge of float to gasket.

[elmer]

Thanks hambone,
I think that before removing it I had it as position 1 but in manual -34 it is drawn as in position 2. In manual -34 the carburetor model is not the same but it is 11641105 (mine is 13660B ord 11681709)
Elmer

[muttguru]

think that before removing it I had it as position 1 but in manual -34 it is drawn as in position 2.

Elmer....... it should be as in your picture "Position 2".


Setting the float:-
Cut a piece of card so that it is 9/32". Position it as shown with the float uppermost. Bend the float arm CAREFULLY (do not put pressure on the float...you will break it).
Turn the carb the correct way up and check the float drop. It should be AT LEAST 3/8". A tiny bit larger is better.
Ken






Ken

[elmer]

Position 2 is with the cover on top of the spring.is it ok?

[elmer]

could you confirm de correct position with new pictures? please

position 1



position 2

[muttguru]

Yes.... exactly as shown in your latest picture Position-2.
Ken

[elmer]

I've put it that way(pos 2) but the engine doesn't start. I've tried it several times and the electric fuel pump has stopped working. I do not know if it's because it's hot or because it's broken. I do not understand ...
elmer

[elmer]

Do you know in what manual can I see zenith 13660B parts o scheme?
I have been searching on the internet and in the forum and I do not find any of this carburetor model

Thanks

[muttguru]

Do you know in what manual can I see zenith 13660B parts o scheme?
I have been searching on the internet and in the forum and I do not find any of this carburetor model
Thanks

There are three carburettors in this group....the 13660, the 13660A and the 13660B. All three are very similar....the difference is in the size of the jet. You can find the exploded view of the 13660 carb in the TM9-2320-218-34-1 dated Aug 1982 and in July 1988.

As for the correct way to install the spring....I've explained which way the parts go back together. You are of course free to try whatever way you want to install the parts. Good luck with that.

And if your fuel pump is not working, the carburettor will definitely not work either.................
Ken

[rickf]

In every picture I see where you have the pump diaphragm lined up correctly with the spring against the cover I notice that you do not have the vacuum hole in the diaphragm lined up with the vacuum hole in the carb body and bowl. This may have something to do with your problem. The pump has to run to get gas into the carb. If I remember correctly you have an aftermarket inline pump, I can't help with that since I have no idea how it is hooked up. You did not lose the idle needle that is in the center of the carburetor bowl did you? It will fall out if you turn the bowl over. The parts diagram for the 13660, 13660A, 13660B are all the same. They are all the same carburetor. The 13848 is also the same. The 12848 is so close that as far as what you are looking for you would never know the differences. The float setting is 9/32 and the float drop is 3/8. This is the same for all models. The idle mixture screw should be turned in until it GENTLY bottoms out and then backed out two full turns, this will get you started. You can fine tune it once it warms up.
If you need to reset the float take the pine out and then bend the arms gently and then put the float back. The pin is serrated on one end so be sure to tap it out towards the serrated end.

[elmer]

Hi Rick. In the photos the holes are not lined up correctly but when I mounted it as in the photo pos 2 with the spring against the cover ,the holes were lined . Thanks for the advice.
I have recovered my old manual fuel pump and tomorrow if the electric does not work I will test the carburetor again with the manual. I wish I could start the engine
Elmer

[rickf]

Do you have the electric hooked up directly to the ignition switch? Is it getting power and a good ground? Make sure there are no leaks in the line between the pump and the tank or it will pull air and lose its prime.

[elmer]

When I give the contact the pump gets hot but it doesn't make any noise and it doesn't work. The strange thing is that the pump stopped working just when I installed the carburetor after cleaning it. For this reason I doubted the correct placement of the membrane and the spring.
Someone could remind me the external electric pump characteristics(pressure,etc....) in case I have to buy a new one. I try to start the mechanic but now I do not have the correct connections
Thanks