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Message |
    
Michael Bashaw
Member
Username: mbashaw
Post Number: 7
Registered: 11-2010
| | Posted on Thursday, August 02, 2012 - 01:19 pm: | 
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In the instructions on the Schebler techical page, it states that the throttle should be "slightly open". What is slightly open? |
Michael Bashaw
Member
Username: mbashaw
Post Number: 8
Registered: 11-2010
| | Posted on Thursday, August 02, 2012 - 03:47 pm: |
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...and is there supposed to be a gasket on the flange where the throttle and the bowl connect? I just put gas in, and mine is leaking right at that connection. |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1014
Registered: 11-2003
| | Posted on Thursday, August 02, 2012 - 08:22 pm: |
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No gaskets for the bowl cover and the rim of the bowl. No gasket between the throttle plate and the cover. No gasket between the bowl throat inlet and the auto choke piece. Note the fine slit on the lower side of the throat inlet which provides drainage from too much choking. A gasket is required at the top of the throat to seal the space between the top of the throat and bowl cover. A gasket is required on screw cover of the float valve. The gasket at the top of the throat seals the fuel in the bowl from outside air pressure to insure a good jet from the needle valve jet in the throat. There is a need for the hex nut on the needle valve to have gasket material to keep fuel from dripping out of the needle valve. The spring in the air inlet only comes into play on working engine with the throttle wide open. An engine not under load requires no adjustment. The large spring outside the throat simply holds the screw adjustment from shifting. The adjustment of the spiral spring on top of the leather disk has to have its narrow end number of turns removed one turn at a time with the engine under load. Don't mess with the number of turn on the large end. Don't mess with the small end turns unless you are actually working under load. There is plenty of air inlet for idle operations without complicating matters. |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1015
Registered: 11-2003
| | Posted on Thursday, August 02, 2012 - 08:40 pm: |
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Sorry forgot to mention the reason for the leakage is probably the float valve is not shutting off the inlet fuel. Make a simple short length of 1/2" wide steel stock about 3" long and at one end cut a slot hacksaw blade thick about 3/8" wide. You may want to bend the slot end a little to get clearance to slip the slot over the float arm. With a little effort you can bend the valve brass arm so the float is lower in the bowl and that should stop the leakage. If the valve rocker arm is a casting try lowering the float by adding washers between the float and the casting. Bending a bronze casting you only get one free bend so avoid trying to bend it as it may already have been bent. Best I can offer. Good luck!!!! |
Michael Bashaw
Member
Username: mbashaw
Post Number: 9
Registered: 11-2010
| | Posted on Friday, August 03, 2012 - 01:39 pm: |
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Ok, I first tightened the bolts on the throttle plate and put gas in the line, and there were leaks all over. So, I took it apart and put gas in just the bowl to see what the float was doing and it leaked even then! |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1016
Registered: 11-2003
| | Posted on Friday, August 03, 2012 - 07:32 pm: |
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Keep in mind the level of the fuel has to be below the level of the end of the jet. Where is it leaking?? |
Michael Bashaw
Member
Username: mbashaw
Post Number: 10
Registered: 11-2010
| | Posted on Friday, August 03, 2012 - 09:36 pm: |
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After it cooled off late this afternoon, and the boat was in the shade, I tried it again. The float is definitely shutting off the flow. It seems that the leak may be in the fuel line connection. The really odd thing is that gas still ends up all over the outside of the bowl, even above the level inside the bowl! |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1017
Registered: 11-2003
| | Posted on Saturday, August 04, 2012 - 09:12 am: |
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Keep in mind the jet itself is threaded into the throat and it should be tight to insure no leakage around the jet. I have never seen a loose jet. Most are so tight you cannot remove them. I don't know whether your bowl fuel inlet has a hex nut or as some later manufactured units have a compression copper tube hex nut. I have run into this problem. There are two different thread hex nuts holding the pipe fitting tight to the bowl. The two different hex nuts look like the same thread but they are actually different thread and don't hold the pipe fitting tight to the bowl. The second thread type are from knockoff carburetors looking like model D Scheblers but actually made by other makers. Better check that point. |
Michael Bashaw
Member
Username: mbashaw
Post Number: 11
Registered: 11-2010
| | Posted on Sunday, August 05, 2012 - 04:21 pm: |
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Ahhhhhhh nuts. This one takes a compression thread, so, it has all the markings of a Schebler, but is a knockoff?
Is it worth trying to make work, or do you think I should I find something else?
Boy thanks for all the help! |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 1018
Registered: 11-2003
| | Posted on Monday, August 06, 2012 - 12:16 pm: |
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Just make an adapter would be the simple answer in my opinion |
