Walbro sdc 37a

[Frognc97]

Just curious if these carbs are set up like it is pictured below tried finding a ipl or handbook but don’t seem to have one thanks in advanced Mac 10-10

 

[Frognc97]

Can’t figure out how to delete but all good

 

[fossil]

 

[EFSM]

I’m late to the party, but you don’t want both diaphragms in there.

 

[Frognc97]

So you would just put 24 abd leave out 25? The second diaphragm with the circle opening

 

[fossil]

I see you have an SDC 37, not an HDC carb.

Here's a file that lists all of the part numbers you need. Scroll to the SDC 37 and refer to the diagram in this file when looking for the diaphragm and gasket part bumbers.

You should have two gaskets in the carb kit for the pump side cover. The correct one for the 37 is PN 92-93 which is the thinner gasket.

 

[EFSM]

So you would just put 24 abd leave out 25? The second diaphragm with the circle opening

Well, I may be wrong. That last attached file shows both diaphragms, although I have no idea what that proves. I suppose it would make the valves stiffer…

 

[Frognc97]

So with my testing tonight for future reference. I took out 25 and put 24 and 22 but I believe what I went back with was a thicker than normal gasket. Maybe 1.5 times the size of regular black rubber gasket. It works and runs absolutely beautiful.